Piston pump
HENGYUHANG Axial piston variable pump HYH10VO series 52 and 53
HENGYUHANG HYH10VO Series 52/53 is a high-performance swashplate axial piston variable displacement pump engineered for open-circuit hydrostatic drives, delivering continuous 250 bar working pressure (315 bar peak), high permissible drive speeds, low operating noise with Pre-Compression Volume (PCV), and an extensive range of modular hydraulic, electrohydraulic, and power controllers across mobile and industrial machinery.
| Applications
Widely deployed in open-loop hydraulic circuits across mobile machinery including agricultural tractors, combine harvesters, mobile cranes, concrete machinery, compact excavators, drilling rigs, hydraulic fan drives, municipal utility trucks, and stationary industrial hydraulic power packs requiring energy-efficient variable flow, rapid dynamic response, and versatile through-drive capability.
| Key Technical Specifications
Product Model: HYH10VO Series 52 & 53 (Sizes 10, 18, 28, 45, 60, 63, 72, 85, 100)
Brand Replacement: Bosch Rexroth A10VO Series 52 & 53 (Sizes 10, 18, 28, 45, 60, 63, 72, 85, 100; open circuit), OEM or as requested.
Displacement: 10.5 / 18.0 / 28.0 / 45.0 / 60.0 / 63.0 / 72.0 / 85.0 / 100.0 cm³/rev
Rotation Direction: Clockwise (R) or Counter-clockwise (L), viewed from drive shaft end
Speed Range: Nominal rating n nom 2,300–3,600 rpm at Vg max (permissible speed n max perm up to 2,500–4,320 rpm at reduced displacement; minimum operating speed n min = 500 rpm)
Peak Pressure: Nominal continuous pressure p nom = 250 bar (3,600 psi) / Maximum peak pressure p max = 315 bar (4,550 psi)
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| Overview of HENGYUHANG HYH10VO Series 52 and 53 Hydraulic Pumps
The HENGYUHANG HYH10VO Series 52 and 53 is a premium swashplate-design axial piston variable displacement pump optimized for open-circuit hydrostatic drive systems. Manufactured as a seamless 1:1 drop-in replacement for the globally renowned Bosch Rexroth A10VO Series 52/53 product line, this pump encompasses all nine standard displacement frame sizes: 10, 18, 28, 45, 60, 63, 72, 85, and 100 cm³/rev.
Fluid output is directly proportional to drive speed and cradle swashplate angle, allowing smooth, stepless variation from maximum displacement down to zero flow. Engineered with an advanced rotary group, heavy-duty drive shaft bearings, and optional pre-compression volume (PCV) technology that damps flow pulsation and reduces airborne machine noise by up to 50%, the HYH10VO Series provides high power density, superior volumetric efficiency, and an expansive suite of modular control devices—including DR pressure regulators, DRF/DRS load-sensing flow controllers, DFLR power controllers, ED electrohydraulic pressure controls, and EP/EK electro-proportional swivel angle controls.
| Dimension of HENGYUHANG HYH10VO Series 52 and 53 Hydraulic Pumps
| Mechanical Installation Interface Specifications
| Frame Size (HYH10VO) | Series Availability | Mounting Flange Standard (ISO 3019-1 / SAE) | Drive Shaft Options (ANSI B92.1a Spline / Keyed) | Working Pressure Port B (ISO 6162) | Suction Port S (ISO 6162) | Case Drain Ports L / L1 / L2 (ISO 11926) | Pilot Pressure Port X (ISO 11926) |
|---|---|---|---|---|---|---|---|
| HYH10VO10 | Series 52 | 2-Hole SAE 82-2 (A) Spigot Ø82.55 mm | S: 3/4 in 11T 16/32DP; U: 5/8 in 9T 16/32DP; P: Parallel keyed Ø18 mm | 1/2 in (M8 / UNC 5/16-18) | 3/4 in (M10 / UNC 3/8-16) | 9/16-18UNF-2B (max 2 bar) | 7/16-20UNF-2B (315 bar) |
| HYH10VO18 | Series 53 | 2-Hole SAE 82-2 (A) Spigot Ø82.55 mm | S: 3/4 in 11T 16/32DP; R: 3/4 in 11T (Reinforced); U: 5/8 in 9T 16/32DP | 1/2 in (M8 / UNC 5/16-18) | 1 in (M10 / UNC 3/8-16) | 9/16-18UNF-2B (max 2 bar) | 7/16-20UNF-2B (315 bar) |
| HYH10VO28 | Series 52 & 53 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | S: 7/8 in 13T 16/32DP; R: 7/8 in 13T (Reinforced); W: Keyed 3/4 in / U: 3/4 in 11T | 3/4 in (M10×1.5, 17 deep / UNC 3/8-16) | 1 1/4 in (M10×1.5, 17 deep / UNC 7/16-14) | 3/4-16UNF-2B (12 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| HYH10VO45 | Series 52 & 53 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | S: 1 in 15T 16/32DP; R: 1 in 15T (Reinforced); W: Keyed 7/8 in / U: 7/8 in 13T | 1 in (M10×1.5, 17 deep / UNC 3/8-16) | 1 1/2 in (M12×1.75, 20 deep / UNC 1/2-13) | 7/8-14UNF-2B (13 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| HYH10VO60 | Series 52 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | M: 1 1/4 in 14T 12/24DP; R: 1 1/4 in 14T (Reinforced); W: Keyed 1 in / O: 1 in 15T | 1 in (M10×1.5, 17 deep / UNC 3/8-16) | 2 in (M12×1.75, 20 deep / UNC 1/2-13) | 7/8-14UNF-2B (13 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| HYH10VO63 | Series 53 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | M: 1 1/4 in 14T 12/24DP; R: 1 1/4 in 14T (Reinforced); W: Keyed 1 in / O: 1 in 15T | 1 in (M10×1.5, 17 deep / UNC 3/8-16) | 2 in (M12×1.75, 20 deep / UNC 1/2-13) | 7/8-14UNF-2B (13 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| HYH10VO72 | Series 53 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | M: 1 1/4 in 14T 12/24DP; R: 1 1/4 in 14T (Reinforced); W: Keyed 1 in / O: 1 in 15T | 1 in (M10×1.5, 17 deep / UNC 3/8-16) | 2 in (M12×1.75, 20 deep / UNC 1/2-13) | 7/8-14UNF-2B (13 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| HYH10VO85 | Series 52 & 53 | 2-Hole SAE 127-2 (C) or 4-Hole SAE 127-4 (D) Ø127.0 mm | S: 1 1/2 in 17T 12/24DP; R: 1 1/2 in 17T (Reinforced); W: Keyed 1 1/4 in / U: 1 1/4 in 14T | 1 1/4 in (M14×2, 19 deep / UNC 1/2-13) | 2 1/2 in (M12×1.75, 17 deep / UNC 1/2-13) | 1 1/16-12UN-2B (15 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| HYH10VO100 | Series 53 | 2-Hole SAE 127-2 (C) or 4-Hole SAE 127-4 (D) Ø127.0 mm | S: 1 1/2 in 17T 12/24DP; R: 1 1/2 in 17T (Reinforced); W: Keyed 1 1/4 in / U: 1 1/4 in 14T | 1 1/4 in (M14×2, 19 deep / UNC 1/2-13) | 2 1/2 in (M12×1.75, 17 deep / UNC 1/2-13) | 1 1/16-12UN-2B (15 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 315 bar) |
| Port Plate Layout Configurations
Port Plate 11 / 61: SAE flange ports at rear, metric / UNC fastening thread (not suitable for through drive).
Port Plate 12 / 62: SAE flange ports laterally opposite, metric / UNC fastening thread (standard for units with through drive).
Port Plate 32 / 82: SAE flange ports laterally opposite with integrated Pre-Compression Volume (PCV) for noise and pulsation reduction (Sizes 28, 45, 60, 63, 72, 85, 100).
| Pump Installation Specifications
| Complete Ordering Code Structure
HYH10V−O−[Size]−[Control]/5[Index] [Rotation]−V[Shaft][Flange][Port Plate][Through Drive]−[Connector][Sensor]
| Position | Code Segment | Available Designations & Options | Technical Description & Functional Purpose |
|---|---|---|---|
| 01 | Axial Piston Unit | HYH10V / A10V | Swashplate design, variable displacement, nominal pressure 250 bar, peak 315 bar |
| 02 | Operating Mode | O | Pump, open-circuit hydrostatic drive |
| 03 | Geometric Frame Size | 10, 18, 28, 45, 60, 63, 72, 85, 100 | Rated geometric displacement in cm³/rev |
| 04 | Control Devices | DR / DRG; DRF / DRS / DRSC; DFLR / DFR; ED71 / ED72; EP1D / EP2D; EP1DF / EP2DF; EK1D / EK2D | DR / DRG: Pressure controller (standard hydraulic or remote controlled); DRF / DRS / DRSC: Pressure and flow controller (load-sensing; X-T open, plugged with flushing, or without flushing); DFLR / DFR: Pressure, flow, and power controller (hyperbolic power limiter); ED71 / ED72: Electrohydraulic pressure control, negative control (12V DC / 24V DC); EP1D / EP2D: Electro-proportional control with pressure cut-off (12V DC / 24V DC); EP1DF / EP2DF: Electro-proportional control with load-sensing flow regulation (12V DC / 24V DC); EK1D / EK2D: Electro-proportional control with controller cut-off (12V DC / 24V DC) |
| 05 | Series / Design Index | 52, 53 | Series 5, Index 2 (Sizes 10, 28, 45, 60, 85); Series 5, Index 3 (Sizes 18, 28, 45, 63, 72, 85, 100) |
| 06 | Direction of Rotation | R, L | Clockwise (R) or Counter-clockwise (L), viewed facing drive shaft |
| 07 | Sealing System | V | FKM (fluorocarbon rubber) high-temperature dynamic seals |
| 08 | Drive Shaft Type | S, M, R, U, W, P | S/M: ANSI B92.1a spline; R: Reinforced spline for high torque; W: Keyed shaft; U: Undersized spline; P: Parallel keyed |
| 09 | Mounting Flange | A, C, D | A: SAE 82-2 (Sizes 10, 18); C: SAE 101-2 (Sizes 28–72) / SAE 127-2 (Sizes 85, 100); D: SAE 127-4 (Sizes 85, 100) |
| 10 | Working Line Ports | 11, 12, 32, 61, 62, 82 | 11/12: Metric SAE ports (rear / side); 32: Side ports with PCV; 61/62/82: UNC fastening threads |
| 11 | Through-Drive Flange | N00, K01, K52, K68, K04, K15, K16 | N00: None; K01/K52: SAE A (9T/11T); K68/K04: SAE B (13T/15T); K15/K16: SAE C (14T/17T) |
| 12 | Connector for Solenoid | Blank / P | Blank: Purely hydraulic control; P: Molded DEUTSCH 2-pin connector (DT04-2P) without suppressor diode |
| 13 | Swivel Angle Sensor | Blank / H / P | Blank: Without sensor; H: Ratiometric electric angle sensor (PAL, 5V DC); P: SENT digital protocol |
| Reading Your Replacement Code
| Rexroth OEM Model Code | HENGYUHANG Drop-In Code | Displacement | Control Mechanism | Mounting & Drive Shaft | Porting & Through Drive |
|---|---|---|---|---|---|
| A10VO28DR/52R-VSC11N00 | HYH10VO28DR/52R-VSC11N00 | 28.0 cm³/rev | Hydraulic pressure regulator (DR) | SAE 101-2 2-bolt flange, ANSI 7/8" 13T spline | Rear SAE ports (M10), without through drive |
| A10VO45DFR1/52R-VSC12N00 | HYH10VO45DFR1/52R-VSC12N00 | 45.0 cm³/rev | Pressure & flow control (LS, DFR1) | SAE 101-2 2-bolt flange, ANSI 1" 15T spline | Side SAE ports (M10), without through drive |
| A10VO63DRF/53R-VRC12K01 | HYH10VO63DRF/53R-VRC12K01 | 63.0 cm³/rev | Pressure & flow control (DRF) | SAE 101-2 2-bolt flange, reinforced ANSI 1 1/4" spline | Side SAE ports, SAE A through drive (9T) |
| A10VO72DFLR/53R-VRC12K68 | HYH10VO72DFLR/53R-VRC12K68 | 72.0 cm³/rev | Pressure, flow & power control (DFLR) | SAE 101-2 2-bolt flange, reinforced ANSI 1 1/4" spline | Side SAE ports, SAE B through drive (13T) |
| A10VO85ED72/52R-VSD12K04-P | HYH10VO85ED72/52R-VSD12K04-P | 85.0 cm³/rev | Electrohydraulic pressure (24V negative) | SAE 127-4 4-bolt flange, ANSI 1 1/2" 17T spline | Side SAE ports, SAE B through drive (15T), DEUTSCH |
| A10VO100EP2DF/53R-VSD32K15-P | HYH10VO100EP2DF/53R-VSD32K15-P | 100.0 cm³/rev | Electro-proportional + LS control (24V) | SAE 127-4 4-bolt flange, ANSI 1 1/2" 17T spline | Side SAE ports with PCV, SAE C through drive (14T) |
Technical Specifications of HENGYUHANG HYH10VNO Series (Sizes 28–85)
4.1 Frame Size Performance Matrix (Data at pₐᵦₛ=1 bar at suction port S, mineral oil ρ=0.88 kg/L)
| Performance Parameter | Unit | HYH10VNO28 | HYH10VNO45 | HYH10VNO63 | HYH10VNO85 |
|---|---|---|---|---|---|
| Max Geometric Displacement (Vgₘₐₓ) | cm³/rev | 28.0 | 45.0 | 63.0 | 85.0 |
| Max Continuous Speed at Vgₘₐₓ (nₙₒₘ) | rpm | 3,200 | 2,900 | 2,700 | 2,700 |
| Minimum Operating Speed (nₘᵢₙ) | rpm | 500 | 500 | 500 | 500 |
| Continuous Flow Rate (qV at nₙₒₘ and Vgₘₐₓ) | L/min | 90 | 131 | 170 | 230 |
| Continuous Drive Power (P at nₙₒₘ, Δp=210 bar) | kW | 31 | 46 | 59 | 80 |
| Continuous Drive Torque (M at Vgₘₐₓ, Δp=210 bar) | Nm | 94 | 150 | 210 | 284 |
| Drive Shaft Torsional Stiffness (Standard Shaft S) | Nm/rad | 11,000 | 22,300 | 37,500 | — |
| Drive Shaft Torsional Stiffness (Undercut Shaft M) | Nm/rad | — | — | — | 57,400 |
| Drive Shaft Torsional Stiffness (Reinforced Shaft R) | Nm/rad | 14,800 | 26,500 | 40,500 | 69,400 |
| Rotary Moment of Inertia (J_TW) | kg·m² | 0.00093 | 0.00170 | 0.00330 | 0.00560 |
| Max Permissible Angular Acceleration (α) | rad/s² | 6,800 | 4,900 | 3,500 | 2,500 |
| Housing Case Fluid Volume | L | 0.25 | 0.30 | 0.50 | 0.80 |
| Dry Weight (approx., without through drive) | kg | 11.5 | 15.0 | 18.0 | 22.0 |
| Dry Weight (approx., with through drive) | kg | 13.0 | 18.0 | 24.0 | 28.0 |
4.2 Operating Pressure Boundaries
| Pressure Characteristic | Value | Definition & Operational Guidelines |
|---|---|---|
| Nominal Operating Pressure (pₙₒₘ) | 210 bar (3,050 psi) | Maximum continuous design pressure according to ISO standards |
| Maximum Peak Pressure (pₘₐₓ) | 250 bar (3,600 psi) | Maximum transient peak within single operating period (t≤2.5 ms, total ≤300 h) |
| Minimum Pressure on High-Pressure Port B | ≥10 bar (145 psi) absolute | Required minimum working pressure to prevent rotary group separation damage |
| Rate of Pressure Change (RAₘₐₓ) | 16,000 bar/s (235,000 psi/s) | Maximum permissible speed of pressure rise and reduction across operating range |
| Suction Port Pressure (pₛ at Port S) | ≥0.8 bar (10 psi) absolute | Minimum continuous suction pressure; maximum permissible p_S max=5 bar (75 psi) absolute |
| Case Drain Permissible Pressure (p_L) | ≤2.0 bar (30 psi) absolute | Maximum 0.5 bar higher than inlet pressure at port S; case must always exceed ambient pressure |
| Pilot Pressure Line Port X | ≤250 bar (3,600 psi) | Maximum external pilot pressure rating for control circuits |
4.3 Hydraulic Fluid & Temperature Operational Limits
| Fluid Characteristic | Permissible Value | Operational Note |
|---|---|---|
| Recommended Fluid Media | Mineral oil (HLP to DIN 51524) | High-quality anti-wear petroleum-based hydraulic fluid |
| Optimum Operating Viscosity (νₒₚₜ) | 16 to 36 mm²/s | Optimal balance of volumetric and mechanical-hydraulic efficiency |
| Continuous Operating Viscosity | 10 to 400 mm²/s | Full performance within normal operating temperature range |
| Minimum Viscosity (νₘᵢₙ) | 7 to 10 mm²/s | Short-term limit (t≤3 min) at p≤0.3⋅pₙₒₘ, T_max=+110 ∘C measured at drain port L |
| Maximum Viscosity at Cold Start (νₘₐₓ) | 1,600 mm²/s | Allowed at cold start (p≤50 bar, n≤1,000 rpm, ϑ_St≥−25 ∘C, warm-up ≤3 min) |
| Permissible Fluid Temperature Range | −25 ∘C to +110 ∘C (−13 ∘F to +230 ∘F) | Full operating phase with standard FKM fluorocarbon dynamic seals |
| Cleanliness Class | ISO 4406 Class 20/18/15 | At very high fluid temperatures (+90 ∘C to +115 ∘C), maintain Class 19/17/14 |
| Alternative Fluids | HETG, HEES, HEPG, HFDU | Environmental fluids; observe specific operational viscosity boundaries |
Product Advantages
High-Speed Swashplate Open-Loop Design
Optimized rotating kit kinematics and balanced valve plate allow continuous operation at elevated engine drive speeds (up to 3,200 rpm on Size 28).
Acoustic Dampening via Pre-Compression Volume (PCV)
Optional integrated PCV technology reduces delivery pressure and flow pulsation by up to 50%, significantly suppressing airborne machine noise in tractor and mobile cabs.
Short Dynamic Control Response Times
Low-inertia swashplate cradle paired with large-diameter control stroking pistons delivers ultra-fast on-stroke and de-stroke response times under rapid duty-cycle shifts.
Favorable Power-to-Weight Ratio
Extremely lightweight and compact housing envelope (dry weight as low as 11.5 kg for Size 28, 22 kg for Size 85) saves critical payload and chassis installation space.
Versatile Full-Torque Modular Through-Drive
Robust rear through-drives (SAE A, SAE B, SAE C with 9T, 11T, 13T, 14T, 15T hubs) enable 100% torque transmission for compounding secondary gear or piston pumps.
Precision 1:1 OEM Drop-In Compatibility
Exact compliance with Bosch Rexroth A10VNO Series 52/53 mounting flanges, ANSI splines, SAE J518 port drillings, and control interfaces ensures zero-modification direct field replacement.
Interchangeability & Cross Reference
6.1 Direct Replacement Matrix: Bosch Rexroth A10VNO to HENGYUHANG HYH10VNO
| Rexroth OEM Model | Displacement | Mounting Flange Standard | Drive Shaft Specification | Working Port Connection | Direct Replacement |
|---|---|---|---|---|---|
| A10VNO28 | 28.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 3/4 in 11T Spline (S / R) | SAE J518 3/4" Port B / 1 1/4" Port S (Code 11/12) | HYH10VNO28 |
| A10VNO45 | 45.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 7/8 in 13T Spline (S / R) | SAE J518 3/4" Port B / 1 1/4" Port S (Code 11/12) | HYH10VNO45 |
| A10VNO63 | 63.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 1 in 15T Spline (S / R) | SAE J518 1" Port B / 1 1/2" Port S (Code 11/12) | HYH10VNO63 |
| A10VNO85 | 85.0 cm³/rev | SAE 127-2 (C) 2-Hole or 127-4 (D) 4-Hole | ANSI 1 1/4 in 14T Spline (S / M / R) | SAE J518 1" Port B / 2" Port S (Code 11/12/32) | HYH10VNO85 |
6.2 Common Control Assembly Cross Reference
| Target Rexroth Function | OEM Controller Code | Equivalent | Functional Characteristic |
|---|---|---|---|
| Pressure Regulator | DR | HYH-DR | Maintains constant system pressure by swiveling pump to zero flow at cut-off |
| Remote Pressure Regulator | DRG | HYH-DRG | Remotely adjustable pressure limiter via external hydraulic pilot valve |
| Load-Sensing Flow Control | DRF / DRS | HYH-DRF / HYH-DRS | Matches pump flow to actuator demand (Δp=14…25 bar); DRS includes internal flushing |
| Electrohydraulic Pressure Control | ED71 / ED72 | HYH-ED71 / HYH-ED72 | Negative pressure control via proportional solenoid (12V DC / 24V DC) |
| Electro-Proportional Control | EP1D / EP2D | HYH-EP1D / HYH-EP2D | Current-controlled proportional displacement with integrated mechanical pressure cut-off |
| Electro-Proportional + Load-Sensing | EP1DF / EP2DF | HYH-EP1DF / HYH-EP2DF | Electric proportional swiveling combined with load-sensing flow override |
| Electronic Control Valve | EC4 / EB4 | HYH-EC4 / HYH-EB4 | Direct proportional valve actuation (positive EC4 / negative EB4, 12V–24V DC) |
Brand Replacement
Bosch Rexroth: Primary 1:1 direct interchangeability for A10VNO Series 52 and 53 open-circuit variable displacement pumps.
Danfoss: Series 45 open-circuit pumps; Parker Hannifin (P1/PD Series) and Eaton open-circuit pumps engineered upon request.
Applications
Agricultural Tractors & Implements: Main hydraulic supply for three-point hitch lift, auxiliary remote spool valves, and steering priority circuits.
Hydraulic Engine Cooling Fan Drives: Proportional electrohydraulic control (ED72 / EC4) for on-demand variable fan speed regulation, reducing fuel consumption.
Municipal Vehicles & Sweepers: Compact variable flow delivery for auxiliary sweeper brooms, water pumps, and utility attachments.
Compact Construction Equipment: Auxiliary hydraulic circuits in mini excavators, compact wheel loaders, and site dumpers.
Turf Care & Specialty Harvesters: Lightweight variable displacement source powering mower decks, reel drives, and conveyor belts.
Stationary Hydraulic Power Packs: Compact, low-noise power units for industrial clamping, lubrication feeds, and light stamping fixtures.
Packaging & Shipping
| Packaging Layer | Specification & Protection Material | Safety Standard |
|---|---|---|
| Inner Protection | Corrosion-inhibiting VCI plastic wrap, desiccants, and heavy-duty port thread plugs | Prevents moisture, atmospheric corrosion, and debris contamination |
| Shock Cushioning | Custom-molded high-density expanded polyethylene (EPE) foam enclosure | Absorbs severe multi-axis transit impacts and protects shaft extensions |
| Outer Enclosure | ISPM-15 export-certified solid fumigation-free engineered wooden crate | Structural reinforcement for global ocean, air, and multimodal handling |
| Logistics Options | Express Courier (DHL, FedEx, UPS), Air Freight, LCL/FCL Ocean Cargo, DDP door-to-door | Dispatch in 48–72 hours for standard configurations; tailored tracking provided |
Why Choose Hengyuhang?
Direct Factory Precision Manufacturing & CNC Excellence: State-of-the-art multi-axis CNC machining centers, precision spherical grinding equipment, and sub-micron gear and bearing fitment (Ra<0.2 μm) guarantee superior rotary group alignment and low internal leakage.
100% Full-Cycle Multi-Parameter Factory Inspection: Every HYH10VNO pump undergoes automated test-bench trials verifying volumetric efficiency (>94%), continuous and peak pressure hold at 210/250 bar, internal case leakage limits, response hysteresis, and vibration/noise spectra prior to dispatch.
Seamless 1:1 OEM Drop-In Interchangeability: Engineered to match European DIN, ISO, and SAE standards down to the millimeter, allowing immediate replacement of Bosch Rexroth A10VNO units with zero pipe rework or bracket modification.
Flexible Engineering Customization & Rapid Prototyping: In-house hydraulic engineering team provides tailored control-valve calibrations, special shaft profiles, auxiliary flushing ports, and rapid prototype turnarounds with minimal MOQ requirements.
Robust Supply Chain, Extensive Inventory & Fast Global Dispatch: Continuous inventory of finished cast bodies, bearing kits, rotary groups, and modular controllers enables standardized orders to ship globally within 48 to 72 hours.
12-Month Comprehensive Warranty & Lifetime Technical Support: All units are backed by an unconditional 12-month factory warranty, 24-hour drawing verification service, and lifetime engineering consultation from certified fluid power specialists.
Interchangeability & Cross Reference of HENGYUHANG HYH10VO Series (A10VO Replacement)
6.1 Direct Replacement Matrix: Bosch Rexroth A10VO to HENGYUHANG HYH10VO
| Rexroth OEM Model | Displacement | Mounting Flange Standard | Drive Shaft Specification | Working Port Connection | Direct Replacement |
|---|---|---|---|---|---|
| A10VO10 | 10.5 cm³/rev | SAE 82-2 (A) 2-Hole Ø82.55 mm | ANSI 3/4 in 11T / 5/8 in 9T | SAE J518 1/2" Port B / 3/4" Port S (Rear/Side) | HYH10VO10 |
| A10VO18 | 18.0 cm³/rev | SAE 82-2 (A) 2-Hole Ø82.55 mm | ANSI 3/4 in 11T (S / R) / 5/8 in 9T | SAE J518 1/2" Port B / 1" Port S (Rear/Side) | HYH10VO18 |
| A10VO28 | 28.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 7/8 in 13T (S / R) / Keyed 3/4 in | SAE J518 3/4" Port B / 1 1/4" Port S (Code 11/12) | HYH10VO28 |
| A10VO45 | 45.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 1 in 15T (S / R) / Keyed 7/8 in | SAE J518 1" Port B / 1 1/2" Port S (Code 11/12) | HYH10VO45 |
| A10VO60 | 60.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 1 1/4 in 14T (M / R) / Keyed 1 in | SAE J518 1" Port B / 2" Port S (Code 11/12) | HYH10VO60 |
| A10VO63 | 63.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 1 1/4 in 14T (M / R) / Keyed 1 in | SAE J518 1" Port B / 2" Port S (Code 11/12) | HYH10VO63 |
| A10VO72 | 72.0 cm³/rev | SAE 101-2 (B) 2-Hole Ø101.6 mm | ANSI 1 1/4 in 14T (M / R) / Keyed 1 in | SAE J518 1" Port B / 2" Port S (Code 11/12) | HYH10VO72 |
| A10VO85 | 85.0 cm³/rev | SAE 127-2 (C) 2-Hole or 127-4 (D) 4-Hole | ANSI 1 1/2 in 17T (S / R) / Keyed 1 1/4 in | SAE J518 1 1/4" Port B / 2 1/2" Port S (Code 11/12) | HYH10VO85 |
| A10VO100 | 100.0 cm³/rev | SAE 127-2 (C) 2-Hole or 127-4 (D) 4-Hole | ANSI 1 1/2 in 17T (S / R) / Keyed 1 1/4 in | SAE J518 1 1/4" Port B / 2 1/2" Port S (Code 11/12) | HYH10VO100 |
6.2 Common Control Assembly Cross Reference
| Target Rexroth Function | OEM Controller Code | Equivalent | Functional Characteristic |
|---|---|---|---|
| Pressure Regulator | DR | HYH-DR | Maintains constant system pressure by swiveling pump to zero flow at cut-off |
| Remote Pressure Regulator | DRG | HYH-DRG | Remotely adjustable pressure limiter via external hydraulic pilot valve |
| Load-Sensing Flow Control | DRF / DRS / DFR1 | HYH-DRF / HYH-DRS | Matches pump flow to actuator demand (Δp=14…25 bar); DRS includes internal flushing |
| Power Controller | DFLR / LA | HYH-DFLR | Hyperbolic input torque/power limitation combined with pressure & LS control |
| Electrohydraulic Pressure Control | ED71 / ED72 | HYH-ED71 / HYH-ED72 | Negative pressure control via proportional solenoid (12V DC / 24V DC) |
| Electro-Proportional Control | EP1D / EP2D | HYH-EP1D / HYH-EP2D | Current-controlled proportional displacement with integrated mechanical pressure cut-off |
| Electro-Proportional + Load-Sensing | EP1DF / EP2DF | HYH-EP1DF / HYH-EP2DF | Electric proportional swiveling combined with load-sensing flow override |
Brand Replacement
Bosch Rexroth: Primary 1:1 direct interchangeability for A10VO Series 52 and 53 open-circuit variable displacement pumps.
Danfoss: Series 45 open-circuit pumps; Parker Hannifin (P1/PD Series) and Eaton open-circuit pumps engineered upon request.
Applications
Agricultural Machinery: Tractor hitch control, auxiliary implement remotes, variable steering circuits, and combine harvesters.
Mobile Cranes & Lifting Equipment: Main hoist winch drive, boom telescoping, and outrigger stabilization circuits.
Concrete Mixers & Pump Trucks: Auxiliary boom placement, water washout pump, and chute positioning systems.
Excavators & Compact Loaders: Auxiliary attachment circuits (hammers, grapples, augers) and variable pilot supply.
Hydraulic Engine Cooling Fan Drives: Proportional electrohydraulic control (ED72 / EP2D) for temperature-dependent variable fan speed regulation.
Stationary Industrial Hydraulic Power Packs: Metal forming presses, plastic injection core-pull circuits, machine tool lubrication, and test benches.
Packaging & Shipping
| Packaging Layer | Specification & Protection Material | Safety Standard |
|---|---|---|
| Inner Protection | Corrosion-inhibiting VCI plastic wrap, desiccants, and heavy-duty port thread plugs | Prevents moisture, atmospheric corrosion, and debris contamination |
| Shock Cushioning | Custom-molded high-density expanded polyethylene (EPE) foam enclosure | Absorbs severe multi-axis transit impacts and protects shaft extensions |
| Outer Enclosure | ISPM-15 export-certified solid fumigation-free engineered wooden crate | Structural reinforcement for global ocean, air, and multimodal handling |
| Logistics Options | Express Courier (DHL, FedEx, UPS), Air Freight, LCL/FCL Ocean Cargo, DDP door-to-door | Dispatch in 48–72 hours for standard configurations; tailored tracking provided |
Why Choose Hengyuhang?
Direct Factory Precision Manufacturing & CNC Excellence: State-of-the-art multi-axis CNC machining centers, precision spherical grinding equipment, and sub-micron gear and bearing fitment (Ra<0.2 μm) guarantee superior rotary group alignment and low internal leakage.
100% Full-Cycle Multi-Parameter Factory Inspection: Every HYH10VO pump undergoes automated test-bench trials verifying volumetric efficiency (>94%), continuous and peak pressure hold at 250/315 bar, internal case leakage limits, response hysteresis, and vibration/noise spectra prior to dispatch.
Seamless 1:1 OEM Drop-In Interchangeability: Engineered to match European DIN, ISO, and SAE standards down to the millimeter, allowing immediate replacement of Bosch Rexroth A10VO units with zero pipe rework or bracket modification.
Flexible Engineering Customization & Rapid Prototyping: In-house hydraulic engineering team provides tailored control-valve calibrations, special shaft profiles, auxiliary flushing ports, and rapid prototype turnarounds with minimal MOQ requirements.
Robust Supply Chain, Extensive Inventory & Fast Global Dispatch: Continuous inventory of finished cast bodies, bearing kits, rotary groups, and modular controllers enables standardized orders to ship globally within 48 to 72 hours.
12-Month Comprehensive Warranty & Lifetime Technical Support: All units are backed by an unconditional 12-month factory warranty, 24-hour drawing verification service, and lifetime engineering consultation from certified fluid power specialists.
HENGYUHANG Axial Piston Variable Pump HYH10VO Series 52 and 53 (Variable Swashplate Open-Circuit Hydraulic Pump, 10.50~100.00 cm³/rev) is a high-performance, medium-pressure variable-displacement axial piston pump designed in swashplate rotary architecture for hydrostatic open-circuit drives across mobile, agricultural, and industrial machinery. Manufactured by Quanzhou Hengyuhang Power Technology Co., Ltd. as an engineered, direct-fit replacement line designed to match the benchmark performance, mounting geometry, pressure ratings, and hydraulic characteristics of the Rexroth A10VO Series 52 and Series 53, the HYH10VO Series is built to the technical benchmark standards defined in official OEM documentation (RE 92703). Fluid delivery flow is directly proportional to drive speed and swashplate displacement angle, allowing stepless variable modulation from zero to maximum flow. Operating at a nominal continuous pressure of 250 bar (3600 psi / 25 MPa) and a maximum peak operating pressure of 315 bar (4550 psi / 31.5 MPa) across 9 primary displacement sizes—10, 18, 28, 45, 60, 63, 72, 85, and 100 cm³/rev—the HYH10VO Series features an integrated Pre-Compression Volume (PCV) port geometry that dampens hydraulic flow ripple and reduces operating pressure pulsation by up to 50%, ensuring quiet running characteristics. Equipped with stable preloaded drive shaft bearings, high permissible rotational speeds (up to 3600 rpm), favorable power-to-weight ratio, standard SAE J744 2-bolt / 4-bolt mounting flanges, ANSI B92.1a splined shafts, ISO 6162 split-flange ports, and full-torque rear through-drive couplings (SAE A, SAE B, SAE C), the HYH10VO Series supports a comprehensive suite of control devices including hydraulic pressure controllers (DR/DRG), load-sensing flow controllers (DFR/DFR1/DRF/DRS/DRSC), electrohydraulic pressure controllers (ED71/ED72, ER71/ER72), and power controllers (LA5D~LA8D), providing a proven, cost-effective drop-in replacement worldwide.
| Applications
The HYH10VO Series 52 & 53 variable swashplate pump is engineered specifically for open-circuit mobile work hydraulics and medium-pressure industrial systems requiring responsive electrohydraulic control, compact installation dimensions, and high operational reliability:
Agricultural Tractors & Combine Harvesters: Primary load-sensing implement pump powering hitch cylinders, remote auxiliary valves, front-loader attachments, steering circuits, and hydraulic header drives.
Variable Speed Fan Drive Systems: On-demand radiator and hydraulic oil cooler fan drive circuits on excavators, heavy wheel loaders, and mining haul trucks using ED/ER electrohydraulic proportional pressure control.
Mobile Telescopic Handlers & Rough-Terrain Forklifts: Powers boom lift and extension cylinders, carriage tilt, frame leveling outriggers, and auxiliary attachments with DRF/DRS flow matching.
Municipal Vehicles & Road Sweepers: Powers broom rotation motors, gutter brushes, suction blowers, body hoists, and salt spreaders with high power-to-weight efficiency.
Drilling & Forestry Equipment: Auxiliary implement and feed pump on hydraulic drill rigs, timber harvesters, forwarders, and log loaders requiring responsive power-limiting (LA control).
Industrial Power Units & Machine Tools: Energy-saving variable-displacement hydraulic power packs for plastic processing machinery, clamping fixtures, compacting presses, and automated transfer lines.
| Key Specifications Overview
| Parameter | Hengyuhang HYH10VO Series 5x Specification (OEM Benchmark Standard) |
|---|---|
| Pump Classification | Axial Piston Variable Displacement Pump in Swashplate Design for Open Circuits (HYH10VO Series 52 & 53) |
| OEM Interchange Reference | Direct dimensional, functional, and hydraulic drop-in replacement for Rexroth A10VO Series 52 & Series 53 |
| Displacement Size Range | 9 Standard Frame Sizes: 10, 18, 28, 45, 60, 63, 72, 85, and 100 cm³/rev (0.64 to 6.10 in³/rev) |
| Nominal Continuous Pressure (pnom) | 250 bar (3600 psi / 25 MPa) continuous working pressure at service port B |
| Maximum Peak Operating Pressure (pmax) | 315 bar (4550 psi / 31.5 MPa) maximum peak pressure within single operating periods (single period: 2.5 ms; total: 300 h) |
| Minimum High-Pressure Holding (pB abs) | 10 bar (145 psi) absolute minimum pressure required on high-pressure side to prevent internal slipper liftoff |
| Rate of Pressure Change (RA max) | 16,000 bar/s (232,000 psi/s) maximum permissible rate of pressure build-up and reduction across entire pressure range |
| Pulsation Dampening Technology | Integrated Pre-Compression Volume (PCV) technology reducing pressure pulsation by up to 50% for quiet operation |
| Rotational Speed Range (at Vg max, pabs = 1 bar) | Nominal drive speeds from 2300 rpm (Size 100) up to 3600 rpm (Size 10); Minimum continuous speed: 500 rpm |
| Suction Pressure Range (Port S Inlet) | Continuous pS min ≥ 0.8 bar absolute (12 psi); Maximum allowable inlet pressure pS max ≤ 5 bar absolute (75 psi) |
| Case Drain Pressure Rating (Ports L, L1, L2) | Maximum continuous case pressure pL max ≤ 2 bar absolute (30 psi); Case pressure must always exceed ambient pressure |
| Rotary Group & Swashplate Technology | Swashplate rotary group with steel slipper shoes, hardened barrel, dual return springs, and stable preloaded bearings |
| Mounting Flange Standards | ISO 3019-1 (SAE J744) 2-bolt (SAE A, SAE B, SAE C) and 4-bolt (SAE C on sizes 85 & 100); ISO 3019-2 metric option on size 10 |
| Drive Shaft Configurations | ANSI B92.1a splined shafts: Code S (standard), Code R (reinforced torque), Code U (reduced diameter), Code M (long undercut) |
| Working Fluid Ports (Port B Outlet) | Threaded M27×2 / UNF on size 10; ISO 6162-1 (Code 61) split-flange on sizes 18~72; ISO 6162-2 (Code 62) on sizes 85 & 100 |
| Suction Fluid Ports (Port S Inlet) | Threaded M27×2 on size 10; ISO 6162-1 split-flange: 1 1/4 in (sizes 18 & 28), 1 1/2 in (size 45), 2 in (sizes 60~72), 2 1/2 in (sizes 85 & 100) |
| Case Drain Fluid Ports (Ports L, L1, L2) | ISO 11926 standard: 3/4-16 UNF-2B (sizes 18 & 28); 7/8-14 UNF-2B (sizes 45~72); 1 1/16-12 UN-2B (sizes 85 & 100) |
| Sealing Material System | Code V: Premium FKM (fluorocarbon rubber) seals standard (-25°C to +110°C continuous, +115°C short-term) |
| Direction of Rotation | Clockwise (Code R) or Counter-Clockwise (Code L), viewed facing input drive shaft |
| Operating Viscosity Range | Optimum: νopt = 16 to 36 mm²/s; Permissible: ν = 10 to 400 mm²/s; Maximum cold start: νmax ≤ 1600 mm²/s |
| Fluid Cleanliness Standard | ISO 4406 Class 20/18/15 minimum (Class 19/17/14 recommended for high operating temperatures or extended life) |
| Through-Drive Capability | Standard rear through-drive shaft (Codes K01, K52, K68, K04, K15, K16, K07, K24) for mounting auxiliary gear or piston pumps up to 100% torque |
| Technical Performance Matrix Across Available Sizes
| Model Number (Hengyuhang Series) | Geometric Displacement Vg max (cm³/rev / in³) | Drive Speed (rpm) | Delivery Flow @ n_nom (L/min / gpm) | Drive Power @ 250 bar (kW / HP) | Torque Output @ 250 bar (Nm / lb-ft) | Rotary Stiffness c (kNm/rad) | Angular Accel. α (rad/s²) | Case Fill (L / gal) | Unit Mass m (kg / lbs) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal n_nom | Maximum n_max | Shaft S / M | Shaft R | w/o Thru-Drive | with Thru-Drive | |||||||
| HYH10VO-10 | 10.50 (0.64) | 3600 | 4320 | 37.0 (9.7) | 16.0 (22.0) | 42.0 (31.0) | 9.2 | – | 8000 | 0.20 (0.05) | 8.0 (17.0) | – |
| HYH10VO-18 | 18.00 (1.10) | 3300 | 3960 | 59.0 (15.6) | 25.0 (34.0) | 71.0 (52.0) | 11.0 | 14.8 | 6800 | 0.25 (0.06) | 11.5 (25.0) | 13.0 (28.6) |
| HYH10VO-28 | 28.00 (1.75) | 3000 | 3600 | 84.0 (22.0) | 35.0 (47.0) | 111.0 (82.0) | 22.3 | 26.3 | 5500 | 0.30 (0.08) | 15.0 (33.0) | 18.0 (40.0) |
| HYH10VO-45 | 45.00 (2.75) | 2600 | 3120 | 117.0 (31.0) | 49.0 (65.0) | 179.0 (132.0) | 37.5 | 41.0 | 4000 | 0.50 (0.13) | 18.0 (40.0) | 24.0 (53.0) |
| HYH10VO-60 | 60.00 (3.66) | 2700 | 3140 | 162.0 (42.0) | 65.0 (88.0) | 238.0 (175.0) | 57.4 (Shaft M) | 69.4 | 3300 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| HYH10VO-63 | 63.00 (3.84) | 2600 | 3140 | 163.0 (43.0) | 68.0 (90.0) | 250.0 (184.0) | 57.4 (Shaft M) | 69.4 | 3300 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| HYH10VO-72 | 72.00 (4.39) | 2600 | 3140 | 187.0 (49.4) | 77.0 (103.0) | 286.0 (211.0) | 57.4 (Shaft M) | 69.4 | 3300 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| HYH10VO-85 | 85.00 (5.18) | 2500 | 3000 | 212.0 (55.0) | 89.0 (119.0) | 338.0 (247.0) | 143.0 | 152.9 | 2700 | 1.00 (0.26) | 36.0 (79.0) | 45.0 (99.0) |
| HYH10VO-100 | 100.00 (6.10) | 2300 | 2500 | 230.0 (60.0) | 96.0 (130.0) | 398.0 (293.0) | 143.0 | 152.9 | 2700 | 1.00 (0.26) | 36.0 (79.0) | 45.0 (99.0) |
| Control Devices & Operating Mechanisms
| Control Code | Control Classification | Control Signal & Pilot Supply | Functional Operation & Machine Application |
|---|---|---|---|
| DR | Hydraulic Pressure Controller | Internal pressure sensing up to 250/315 bar | Maintains constant hydraulic system pressure by swiveling pump displacement back towards zero when set pressure is reached; protects system against overload. |
| DRG | Remotely Controlled Pressure Controller | External pilot pressure relief valve connected via port X | Enables multi-pressure stage control or remote proportional pressure adjustment via an external remote relief valve connected to pilot port X. |
| DFR / DRF | Pressure and Flow Controller (Load-Sensing, X-T Open) | Load pressure signal connected at port X with open drain orifice | True load-sensing control that adjusts pump flow to match actuator demand while maintaining preset differential pressure (Δp = 14~25 bar); minimizes hydraulic heating. |
| DFR1 / DRS / DRSC | Pressure and Flow Controller (Load-Sensing, X-T Plugged) | Port X plugged with internal flushing function (DFR1/DRS) or without flushing (DRSC) | Load-sensing regulation designed for systems where the load signal line drain orifice is integrated externally inside the main directional control valve block. |
| ED71 / ED72 | Electrohydraulic Pressure Controller (Negative Characteristic) | Electric current signal (ED71: 12V DC / ED72: 24V DC, DEUTSCH DT04-2P) | Electrical proportional pressure setting; maximum pressure achieved at zero current (fail-safe high pressure), pressure decreases proportionally as solenoid current increases (ideal for fan drives). |
| ER71 / ER72 | Electrohydraulic Pressure Controller (Positive Characteristic) | Electric current signal (ER71: 12V DC / ER72: 24V DC, DEUTSCH DT04-2P) | Electrical proportional pressure setting with positive characteristic; minimum pressure at zero current, pressure rises proportionally with increasing control current. |
| LA5D / LA6D / LA7D / LA8D | Power Controller with Pressure Cut-Off (Hydraulic) | Hydraulic internal pilot pressure and mechanical spring curve | Maintains constant drive engine power absorption across varying working pressures; automatically swivels pump displacement down as system pressure rises to prevent engine stall. |
| EP / EK Series | Electroproportional Swivel Angle / Flow Control | Proportional electric current signal (12V / 24V DC) | Direct electroproportional swashplate swivel angle positioning with optional integrated controller cut-off valve for rapid de-stroking response. |
| Mounting Flange, Shaft and Port Specifications Across Sizes
| Size Model | Mounting Flange Standards | Drive Shaft Options (ANSI B92.1a / ISO) | Fluid Port Connections (Working, Suction, Drain & Pilot) |
|---|---|---|---|
| HYH10VO-10 | ISO 3019-2 metric 2-bolt: Pilot Ø80 mm (-0.046 mm), pitch 100 mm; or ISO 3019-1 (SAE A 2-bolt): Pilot Ø82.55 mm, pitch 106.4 mm | Code S: Splined 3/4 in 11T 16/32DP; Code U: Splined 5/8 in 9T 16/32DP; Code P: Parallel keyed A6×6×25; Code K: Keyed 19-1 | Port B Working: DIN 3852 M27×2 (or ISO 11926 1 1/16-12 UNF); Port S Suction: DIN 3852 M27×2 (or 1 1/16-12 UNF); Drain L/L1: M16×1.5; Pilot X: M14×1.5 |
| HYH10VO-18 | ISO 3019-1 (SAE J744 82-2 / SAE A 2-bolt): Pilot Ø82.55 mm (-0.054 mm); Bolt pitch 106.4 mm; 2 × Ø11.0 mm holes | Code S: Splined 3/4 in 11T 16/32DP (ext. 38.0 mm); Code R: Splined 3/4 in 11T 16/32DP (reinforced); Code U: Splined 5/8 in 9T | Port B Working: ISO 6162-1 (Code 61) 3/4 in (M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/4 in (M10×1.5 or 7/16-14 UNC); Drain L/L1: 3/4-16 UNF-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-28 | ISO 3019-1 (SAE J744 101-2 / SAE B 2-bolt): Pilot Ø101.6 mm (-0.054 mm); Bolt pitch 146.0 mm; 2 × Ø14.3 mm holes | Code S: Splined 7/8 in 13T 16/32DP (ext. 41.0 mm); Code R: Splined 7/8 in 13T (reinforced); Code U: Splined 3/4 in 11T | Port B Working: ISO 6162-1 (Code 61) 3/4 in (M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/4 in (M10×1.5 or 7/16-14 UNC); Drain L/L1/L2: 3/4-16 UNF-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-45 | ISO 3019-1 (SAE J744 101-2 / SAE B 2-bolt): Pilot Ø101.6 mm (-0.054 mm); Bolt pitch 146.0 mm; 2 × Ø14.3 mm holes | Code S: Splined 1 in 15T 16/32DP (ext. 45.9 mm); Code R: Splined 1 in 15T (reinforced); Code U: Splined 7/8 in 13T; Code W/K: Keyed | Port B Working: ISO 6162-1 (Code 61) 1 in (M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/2 in (M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: 7/8-14 UNF-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-60 | ISO 3019-1 (SAE J744 127-2 / SAE C 2-bolt): Pilot Ø127.0 mm (-0.054 mm); Bolt pitch 181.0 mm; 2 × Ø17.5 mm holes | Code M: Splined 1 1/4 in 14T 12/24DP (long undercut); Code R: Splined 1 1/4 in 14T (reinforced); Code U: Splined 1 in 15T | Port B Working: ISO 6162-1 (Code 61) 1 in (M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 2 in (M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: 7/8-14 UNF-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-63 | ISO 3019-1 (SAE J744 127-2 / SAE C 2-bolt): Pilot Ø127.0 mm (-0.054 mm); Bolt pitch 181.0 mm; 2 × Ø17.5 mm holes | Code M: Splined 1 1/4 in 14T 12/24DP (long undercut); Code R: Splined 1 1/4 in 14T (reinforced); Code U: Splined 1 in 15T | Port B Working: ISO 6162-1 (Code 61) 1 in (M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 2 in (M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: 7/8-14 UNF-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-72 | ISO 3019-1 (SAE J744 127-2 / SAE C 2-bolt): Pilot Ø127.0 mm (-0.054 mm); Bolt pitch 181.0 mm; 2 × Ø17.5 mm holes | Code M: Splined 1 1/4 in 14T 12/24DP (long undercut); Code R: Splined 1 1/4 in 14T (reinforced); Code U: Splined 1 in 15T | Port B Working: ISO 6162-1 (Code 61) 1 in (M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 2 in (M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: 7/8-14 UNF-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-85 | ISO 3019-1 (SAE J744 127-2 / SAE C 2-bolt, Code C); or ISO 3019-1 (SAE C 4-bolt, Code D): Pilot Ø127.0 mm, 4 × Ø14.3 mm holes | Code S: Splined 1 1/2 in 17T 12/24DP; Code R: Splined 1 1/2 in 17T (reinforced); Code U: Splined 1 1/4 in 14T; Code W/K: Keyed | Port B Working: ISO 6162-2 (Code 62 High Pressure) 1 1/4 in (M14×2 or 1/2-13 UNC); Port S Suction: ISO 6162-1 2 1/2 in (M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: 1 1/16-12 UN-2B; Pilot X: 7/16-20 UNF-2B |
| HYH10VO-100 | ISO 3019-1 (SAE J744 127-2 / SAE C 2-bolt, Code C); or ISO 3019-1 (SAE C 4-bolt, Code D): Pilot Ø127.0 mm, 4 × Ø14.3 mm holes | Code S: Splined 1 1/2 in 17T 12/24DP; Code R: Splined 1 1/2 in 17T (reinforced); Code U: Splined 1 1/4 in 14T; Code W/K: Keyed | Port B Working: ISO 6162-2 (Code 62 High Pressure) 1 1/4 in (M14×2 or 1/2-13 UNC); Port S Suction: ISO 6162-1 2 1/2 in (M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: 1 1/16-12 UN-2B; Pilot X: 7/16-20 UNF-2B |
| Through-Drive Options and Multi-Pump Combinations
| Through-Drive Code | Mounting Flange Standard | Internal Splined Coupling Hub | Typical 2nd Auxiliary Pump Combination |
|---|---|---|---|
| N00 | Without through drive | None (closed rear housing end) | Single pump standalone open-circuit operation |
| K01 | ISO 3019-1 82-2 (SAE A 2-bolt) | Spline ANSI B92.1a 5/8 in 9T 16/32DP | Auxiliary micro gear pumps (HYH-HGP-1A, AZPF) for steering or pilot control |
| K52 | ISO 3019-1 82-2 (SAE A 2-bolt) | Spline ANSI B92.1a 3/4 in 11T 16/32DP | Medium gear pumps, secondary open-circuit piston pumps (HYH10VO-18, HYH10VO-28) |
| K68 | ISO 3019-1 101-2 (SAE B 2-bolt) | Spline ANSI B92.1a 7/8 in 13T 16/32DP | Secondary HYH10VO-28/45, HYH10VSO-28/45, cast iron gear pumps (HYH-CB-FC) |
| K04 | ISO 3019-1 101-2 (SAE B 2-bolt) | Spline ANSI B92.1a 1 in 15T 16/32DP | Secondary HYH10VO-45/63, heavy-duty mobile gear pumps (Sizes 45~100) |
| K15 | ISO 3019-1 127-4 (SAE C 4-bolt) | Spline ANSI B92.1a 1 1/4 in 14T 12/24DP | Secondary piston pumps up to same frame size (Sizes 60~100) |
| K16 | ISO 3019-1 127-4 (SAE C 4-bolt) | Spline ANSI B92.1a 1 1/2 in 17T 12/24DP | Heavy secondary piston pumps (Sizes 85 & 100) |
| K07 / K24 | ISO 3019-1 127-2 (SAE C 2-bolt) | Spline ANSI B92.1a 1 1/4 in 14T (K07) or 1 1/2 in 17T (K24) | SAE C 2-bolt auxiliary pump mountings (Sizes 85 & 100) |
| Direct Interchangeability and OEM Replacement Matrix (Rexroth A10VO Series 52 & 53)
| Hengyuhang Series Model | OEM Original Rexroth Reference Model | Flange & Shaft Standard | Interchangeability Verification Status |
|---|---|---|---|
| HYH10VO-10 | A10VO 10 DR / 52R-VSC14N00 (or DFR / 52R-VSC14N00) | Metric Ø80 mm or SAE A 2-Bolt, 3/4 in 11T | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-18 | A10VO 18 DR / 53R-VSC11N00 (or DRF / 53R-VSC12N00) | SAE A 2-Bolt, 3/4 in 11T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-28 | A10VO 28 DFR1 / 52R-VSC12N00 (or DRF / 53R-VSC12N00) | SAE B 2-Bolt, 7/8 in 13T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-45 | A10VO 45 DFR1 / 52R-VSC12N00 (or DRF / 53R-VSC12N00) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-45 | A10VO 45 ED72 / 52R-VSC12N00 (Fan Drive) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-60 | A10VO 60 DFR1 / 52R-VMC12N00 (or LA5D / 52R-VMC12N00) | SAE C 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-63 | A10VO 63 DRF / 53R-VMC12N00 (or ED72 / 53R-VMC12N00) | SAE C 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-72 | A10VO 72 DRF / 53R-VMC12N00 (or LA8D / 53R-VMC12N00) | SAE C 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-85 | A10VO 85 DFR1 / 52R-VSC12N00 (or DRF / 53R-VSC12N00) | SAE C 2-Bolt / 4-Bolt, 1 1/2 in 17T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-100 | A10VO 100 DRF / 53R-VSC12N00 (or LA8D / 53R-VSC12N00) | SAE C 2-Bolt / 4-Bolt, 1 1/2 in 17T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| Model Coding & Ordering Structure
| Code Field | Field Designation | Available Standard Codes | Technical Definition & Configuration Meaning |
|---|---|---|---|
| [01] Unit Type | Axial Piston Variable Pump | HYH10V | Swashplate variable displacement machine, nominal pressure 250 bar (3600 psi), max 315 bar (4550 psi) |
| [02] Mode | Circuit Operation Mode | O | Open-circuit hydrostatic drive pump |
| [03] Frame Size | Geometric Displacement (cm³) | 10 / 18 / 28 / 45 / 60 / 63 / 72 / 85 / 100 | Nominal displacement size Vg max in cm³/rev (10, 18, 28, 45, 60, 63, 72, 85, 100) |
| [04] Control Device | Displacement Control Mechanism | DR / DRG / DFR / DFR1 / DRF / DRS / DRSC / ED71 / ED72 / ER71 / ER72 / LA / EP / EK | DR: Pressure control; DFR/DRF: Load-sensing; DRG: Remote pressure; ED/ER: Electrohydraulic fan control; LA: Power control |
| [05] Series | Series Designation | 52 / 53 | Code 52: Series 5, Index 2 (Sizes 10, 28, 45, 60, 85); Code 53: Series 5, Index 3 (Sizes 18, 28, 45, 63, 72, 85, 100) |
| [06] Rotation | Direction of Rotation | R / L | Code R: Clockwise; Code L: Counter-Clockwise, viewed facing drive shaft |
| [07] Seals | Sealing Material System | V | Code V: Premium FKM (fluorocarbon rubber) seals standard (-25°C to +110°C continuous) |
| [08] Drive Shaft | Input Shaft Configuration | S / R / U / M / W / P / K | Code S: ANSI B92.1a standard spline; Code R: Reinforced spline; Code U: Reduced diameter; Code M: Long undercut; Code W/P/K: Keyed |
| [09] Mounting Flange | Mounting Flange Style | C / D / A | Code C: ISO 3019-1 2-bolt (SAE A, SAE B, SAE C); Code D: ISO 3019-1 4-bolt (SAE C on sizes 85 & 100); Code A: Metric ISO 3019-2 (Size 10) |
| [10] Working Ports | Service Port Configuration | 11 / 12 / 13 / 14 / 32 / 61 / 62 / 64 / 82 | Codes 11/12/14: SAE/metric threads; Codes 32/82: with PCV; Codes 61/62/64: SAE UNC threads; High pressure Code 62 on sizes 85/100 |
| [11] Through Drive | Rear Auxiliary Attachment | N00 / K01 / K52 / K68 / K04 / K15 / K16 / K07 / K24 | Code N00: Without through drive; Codes K01~K24: Standard SAE A, SAE B, SAE C auxiliary flanges and splined hubs |
| [12] Connectors | Electrical Valve Connectors | Without code / P | Without code: Hydraulic controls; Code P: DEUTSCH 2-pin molded connector DT04-2P without diode (for electric controls) |
| Technical Performance Matrix Across Available Sizes
| Model Number (Hengyuhang Series) | Geometric Displacement Vg max (cm³/rev / in³) | Drive Speed (rpm) | Delivery Flow @ n_nom (L/min / gpm) | Drive Power @ 250 bar (kW / HP) | Torque Output @ 250 bar (Nm / lb-ft) | Rotary Stiffness c (kNm/rad) | Angular Accel. α (rad/s²) | Case Fill (L / gal) | Unit Mass m (kg / lbs) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal n_nom | Maximum n_max | Shaft S / M | Shaft R | w/o Thru-Drive | with Thru-Drive | |||||||
| HYH10VO-10 | 10.50 (0.64) | 3600 | 4320 | 37.0 (9.7) | 16.0 (22.0) | 42.0 (31.0) | 9.2 | – | 8000 | 0.20 (0.05) | 8.0 (17.0) | – |
| HYH10VO-18 | 18.00 (1.10) | 3300 | 3960 | 59.0 (15.6) | 25.0 (34.0) | 71.0 (52.0) | 11.0 | 14.8 | 6800 | 0.25 (0.06) | 11.5 (25.0) | 13.0 (28.6) |
| HYH10VO-28 | 28.00 (1.75) | 3000 | 3600 | 84.0 (22.0) | 35.0 (47.0) | 111.0 (82.0) | 22.3 | 26.3 | 5500 | 0.30 (0.08) | 15.0 (33.0) | 18.0 (40.0) |
| HYH10VO-45 | 45.00 (2.75) | 2600 | 3120 | 117.0 (31.0) | 49.0 (65.0) | 179.0 (132.0) | 37.5 | 41.0 | 4000 | 0.50 (0.13) | 18.0 (40.0) | 24.0 (53.0) |
| HYH10VO-60 | 60.00 (3.66) | 2700 | 3140 | 162.0 (42.0) | 65.0 (88.0) | 238.0 (175.0) | 57.4 (Shaft M) | 69.4 | 3300 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| HYH10VO-63 | 63.00 (3.84) | 2600 | 3140 | 163.0 (43.0) | 68.0 (90.0) | 250.0 (184.0) | 57.4 (Shaft M) | 69.4 | 3300 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| HYH10VO-72 | 72.00 (4.39) | 2600 | 3140 | 187.0 (49.4) | 77.0 (103.0) | 286.0 (211.0) | 57.4 (Shaft M) | 69.4 | 3300 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| HYH10VO-85 | 85.00 (5.18) | 2500 | 3000 | 212.0 (55.0) | 89.0 (119.0) | 338.0 (247.0) | 143.0 | 152.9 | 2700 | 1.00 (0.26) | 36.0 (79.0) | 45.0 (99.0) |
| HYH10VO-100 | 100.00 (6.10) | 2300 | 2500 | 230.0 (60.0) | 96.0 (130.0) | 398.0 (293.0) | 143.0 | 152.9 | 2700 | 1.00 (0.26) | 36.0 (79.0) | 45.0 (99.0) |
| Hengyuhang Series Model | OEM Original Rexroth Reference Model | Flange & Shaft Standard | Interchangeability Verification Status |
|---|---|---|---|
| HYH10VO-10 | A10VO 10 DR / 52R-VSC14N00 (or DFR / 52R-VSC14N00) | Metric Ø80 mm or SAE A 2-Bolt, 3/4 in 11T | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-18 | A10VO 18 DR / 53R-VSC11N00 (or DRF / 53R-VSC12N00) | SAE A 2-Bolt, 3/4 in 11T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-28 | A10VO 28 DFR1 / 52R-VSC12N00 (or DRF / 53R-VSC12N00) | SAE B 2-Bolt, 7/8 in 13T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-45 | A10VO 45 DFR1 / 52R-VSC12N00 (or DRF / 53R-VSC12N00) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-45 | A10VO 45 ED72 / 52R-VSC12N00 (Fan Drive) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-60 | A10VO 60 DFR1 / 52R-VMC12N00 (or LA5D / 52R-VMC12N00) | SAE C 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-63 | A10VO 63 DRF / 53R-VMC12N00 (or ED72 / 53R-VMC12N00) | SAE C 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-72 | A10VO 72 DRF / 53R-VMC12N00 (or LA8D / 53R-VMC12N00) | SAE C 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-85 | A10VO 85 DFR1 / 52R-VSC12N00 (or DRF / 53R-VSC12N00) | SAE C 2-Bolt / 4-Bolt, 1 1/2 in 17T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VO-100 | A10VO 100 DRF / 53R-VSC12N00 (or LA8D / 53R-VSC12N00) | SAE C 2-Bolt / 4-Bolt, 1 1/2 in 17T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| Code Field | Field Designation | Available Standard Codes | Technical Definition & Configuration Meaning |
|---|---|---|---|
| [01] Unit Type | Axial Piston Variable Pump | HYH10V | Swashplate variable displacement machine, nominal pressure 250 bar (3600 psi), max 315 bar (4550 psi) |
| [02] Mode | Circuit Operation Mode | O | Open-circuit hydrostatic drive pump |
| [03] Frame Size | Geometric Displacement (cm³) | 10 / 18 / 28 / 45 / 60 / 63 / 72 / 85 / 100 | Nominal displacement size Vg max in cm³/rev (10, 18, 28, 45, 60, 63, 72, 85, 100) |
| [04] Control Device | Displacement Control Mechanism | DR / DRG / DFR / DFR1 / DRF / DRS / DRSC / ED71 / ED72 / ER71 / ER72 / LA / EP / EK | DR: Pressure control; DFR/DRF: Load-sensing; DRG: Remote pressure; ED/ER: Electrohydraulic fan control; LA: Power control |
| [05] Series | Series Designation | 52 / 53 | Code 52: Series 5, Index 2 (Sizes 10, 28, 45, 60, 85); Code 53: Series 5, Index 3 (Sizes 18, 28, 45, 63, 72, 85, 100) |
| [06] Rotation | Direction of Rotation | R / L | Code R: Clockwise; Code L: Counter-Clockwise, viewed facing drive shaft |
| [07] Seals | Sealing Material System | V | Code V: Premium FKM (fluorocarbon rubber) seals standard (-25°C to +110°C continuous) |
| [08] Drive Shaft | Input Shaft Configuration | S / R / U / M / W / P / K | Code S: ANSI B92.1a standard spline; Code R: Reinforced spline; Code U: Reduced diameter; Code M: Long undercut; Code W/P/K: Keyed |
| [09] Mounting Flange | Mounting Flange Style | C / D / A | Code C: ISO 3019-1 2-bolt (SAE A, SAE B, SAE C); Code D: ISO 3019-1 4-bolt (SAE C on sizes 85 & 100); Code A: Metric ISO 3019-2 (Size 10) |
| [10] Working Ports | Service Port Configuration | 11 / 12 / 13 / 14 / 32 / 61 / 62 / 64 / 82 | Codes 11/12/14: SAE/metric threads; Codes 32/82: with PCV; Codes 61/62/64: SAE UNC threads; High pressure Code 62 on sizes 85/100 |
| [11] Through Drive | Rear Auxiliary Attachment | N00 / K01 / K52 / K68 / K04 / K15 / K16 / K07 / K24 | Code N00: Without through drive; Codes K01~K24: Standard SAE A, SAE B, SAE C auxiliary flanges and splined hubs |
| [12] Connectors | Electrical Valve Connectors | Without code / P | Without code: Hydraulic controls; Code P: DEUTSCH 2-pin molded connector DT04-2P without diode (for electric controls) |
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