Piston pump
HENGYUHANG Axial piston variable pump HYH10VNO series 52 and 53
HENGYUHANG HYH10VNO Series 52/53 is a compact swashplate axial piston variable displacement pump engineered for open-circuit hydrostatic drives in low-to-medium pressure applications, delivering continuous 210 bar working pressure (250 bar peak), high permissible drive speeds, low noise with Pre-Compression Volume (PCV), and fast electrohydraulic control response across mobile and agricultural machinery.
| Applications
Designed for open-loop hydraulic circuits in agricultural tractors, agricultural implements, hydraulic fan drives, turf care equipment, municipal vehicles, compact excavators, and stationary industrial power packs requiring reliable variable flow, favorable power-to-weight ratio, integrated pulsation damping, and high-response electrohydraulic or load-sensing control.
| Key Technical Specifications
Product Model: HYH10VNO Series 52 / 53 (Sizes 28, 45, 63, 85)
Brand Replacement: Bosch Rexroth A10VNO Series 52 & 53 (Sizes 28, 45, 63, 85; open circuit), OEM or as requested.
Displacement: 28.0 / 45.0 / 63.0 / 85.0 cm³/rev
Rotation Direction: Clockwise (R) or Counter-clockwise (L), viewed from drive shaft end
Speed Range: Nominal rating n nom 2,700–3,200 rpm at Vg max (minimum operating speed n min = 500 rpm)
Peak Pressure: Nominal continuous pressure p nom = 210 bar (3,050 psi) / Maximum peak pressure p max = 250 bar (3,600 psi)
- Description
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| Overview of HENGYUHANG HYH10VNO Series 52 and 53 Hydraulic Pumps
The HENGYUHANG HYH10VNO Series 52 and 53 is a swashplate-design axial piston variable displacement pump optimized for open-circuit hydrostatic systems operating in the low-to-medium pressure spectrum. Manufactured as an exact 1:1 drop-in replacement for the global Bosch Rexroth A10VNO Series 52/53 product line across frame sizes 28, 45, 63, and 85, this pump provides smooth, energy-efficient fluid power conversion.
Output delivery is proportional to input drive speed and cradle swashplate angle, allowing stepless adjustment from maximum displacement down to zero flow. Featuring an optimized pre-compression volume (PCV) that reduces flow pulsation and lowers operating noise by up to 50%, high-capacity drive shaft bearings engineered for extended service life, and an extensive suite of modular control devices (DR pressure regulators, DRF/DRS load-sensing governors, ED electrohydraulic pressure limiters, and EP/EK electro-proportional controllers), the HYH10VNO delivers fast dynamic control times, high permissible rotational speeds, and complete installation interchangeability for demanding modern equipment.
| Dimension of HENGYUHANG HYH10VNO Series 52 and 53 Hydraulic Pumps
| Mechanical Installation Interface Specifications
| Frame Size (HYH10VNO) | Mounting Flange Standard (ISO 3019-1 / SAE) | Drive Shaft (Splined ANSI B92.1a) | Working Pressure Port B (ISO 6162-1) | Suction Port S (ISO 6162-1) | Case Drain Ports L / L1 / L2 (ISO 11926) | Pilot Pressure Port X (ISO 11926) |
|---|---|---|---|---|---|---|
| HYH10VNO28 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | S: 3/4 in 11T 16/32DP (19-4); R: 3/4 in 11T (Reinforced) | 3/4 in (Metric thread M10×1.5, 17 deep / UNC 3/8-16) | 1 1/4 in (Metric thread M10×1.5, 17 deep / UNC 7/16-14) | 3/4-16UNF-2B (13 deep; max 2 bar) | 7/16-20UNF-2B (11.5 deep; 250 bar) |
| HYH10VNO45 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | S: 7/8 in 13T 16/32DP (22-4); R: 7/8 in 13T (Reinforced) | 3/4 in (Metric thread M10×1.5, 17 deep / UNC 3/8-16) | 1 1/4 in (Metric thread 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; 250 bar) |
| HYH10VNO63 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | S: 1 in 15T 16/32DP (25-4); R: 1 in 15T (Reinforced) | 1 in (Metric thread M10×1.5, 17 deep / UNC 3/8-16) | 1 1/2 in (Metric thread 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; 250 bar) |
| HYH10VNO85 | 2-Hole SAE 127-2 (C) or 4-Hole SAE 127-4 (D) Ø127.0 mm | S: 1 1/4 in 14T 12/24DP (32-4); M: 1 1/4 in 14T (Undercut); R: 1 1/4 in 14T (Reinforced) | 1 in (Metric thread M10×1.5, 17 deep / UNC 3/8-16) | 2 in (Metric thread 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; 250 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, equipped with Pre-Compression Volume (PCV) for acoustic pulsation dampening (Size 85).
| Pump Installation Specifications
| Complete Ordering Code Structure
HYH10VN−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 | HYH10VN / A10VN | Swashplate design, variable displacement, nominal pressure 210 bar, peak 250 bar |
| 02 | Operating Mode | O | Pump, open-circuit hydrostatic drive |
| 03 | Geometric Frame Size | 28, 45, 63, 85 | Rated displacement in cm³/rev (28.0, 45.0, 63.0, 85.0) |
| 04 | Control Devices | DR / DRG; DRF / DRS / DRSC; ED71 / ED72; EC4 / EB4; EP1D / EP2D; EP1DF / EP2DF / EP1DS / EP2DS; EK1D / EK2D / EK1DF / EK2DF | 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); ED71 / ED72: Electrohydraulic pressure control, negative control (12V DC / 24V DC); EC4 / EB4: Electrohydraulic control valve (positive / negative control, 12V–24V DC); EP1D / EP2D: Electro-proportional control with pressure cut-off (12V DC / 24V DC); EP1DF / EP2DF / EP1DS / EP2DS: Electro-proportional control with load-sensing flow regulation (12V / 24V DC); EK1D / EK2D / EK1DF / EK2DF: Electro-proportional control with controller cut-off (12V / 24V DC) |
| 05 | Series / Design Index | 52, 53 | Series 5, Index 2 (Sizes 45, 63); Series 5, Index 3 (Sizes 28, 45, 63, 85) |
| 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 | S: Splined shaft ANSI B92.1a (standard); M: Splined shaft with long undercut (Size 85); R: Splined shaft for higher torque |
| 09 | Mounting Flange | C, D | C: ISO 3019-1 (SAE) 2-hole flange; D: ISO 3019-1 (SAE) 4-hole flange (Size 85) |
| 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 | N00: None; K01: SAE A (9T); K52: SAE A (11T); K68: SAE B (13T); K04: SAE B (15T); K15: SAE C (14T) |
| 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 |
|---|---|---|---|---|---|
| A10VNO28DR/53R-VSC11N00 | HYH10VNO28DR/53R-VSC11N00 | 28.0 cm³/rev | Hydraulic pressure regulator (DR) | SAE 101-2 2-bolt flange, ANSI 3/4" 11T spline | Rear SAE ports (M10), without through drive |
| A10VNO45DRF/53R-VSC12K01 | HYH10VNO45DRF/53R-VSC12K01 | 45.0 cm³/rev | Pressure & flow control (LS, DRF) | SAE 101-2 2-bolt flange, ANSI 7/8" 13T spline | Side SAE ports, SAE A through drive (9T) |
| A10VNO63ED72/53R-VRC12K68-P | HYH10VNO63ED72/53R-VRC12K68-P | 63.0 cm³/rev | Electrohydraulic pressure (24V negative) | SAE 101-2 2-bolt flange, reinforced ANSI 1" spline | Side SAE ports, SAE B through drive (13T), DEUTSCH |
| A10VNO85EP2D/53R-VSD12K04-P | HYH10VNO85EP2D/53R-VSD12K04-P | 85.0 cm³/rev | Electro-proportional (24V) + cut-off | SAE 127-4 4-bolt flange, ANSI 1 1/4" 14T spline | Side SAE ports, SAE B through drive (15T), DEUTSCH |
| A10VNO85DRS/53R-VSD32N00 | HYH10VNO85DRS/53R-VSD32N00 | 85.0 cm³/rev | Pressure & flow control (DRS with PCV) | SAE 127-4 4-bolt flange, ANSI 1 1/4" 14T spline | Side SAE ports with PCV, without through drive |
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.
HENGYUHANG Axial Piston Variable Pump HYH10VNO Series 5x (Variable Swashplate Open-Circuit Hydraulic Pump, 28.00~85.00 cm³/rev) is a modern, high-efficiency variable-displacement axial piston pump designed in swashplate rotary architecture for hydrostatic open-circuit drives in mobile, agricultural, and specialized industrial machinery. Manufactured by Quanzhou Hengyuhang Power Technology Co., Ltd. as an engineered, direct-fit replacement line designed to match the benchmark performance, mounting dimensions, control options, and hydraulic characteristics of the Rexroth A10VNO Series 52 and Series 53, the HYH10VNO Series is optimized for medium/low-pressure auxiliary and prime mobile applications such as agricultural tractor implement hydraulics, electrohydraulic fan drives, municipal utility machines, and mobile crane steering circuits. All technical ratings, pressure tiers, and dimensional configurations are established according to the official OEM engineering benchmark standard (RE 92735). Fluid delivery flow is directly proportional to drive rotational speed and swashplate displacement angle, allowing stepless variable modulation from zero to maximum output. Operating at a nominal continuous pressure of 210 bar (3050 psi) and a maximum peak pressure of 250 bar (3600 psi) across 4 primary frame sizes—28, 45, 63, and 85 cm³/rev—the HYH10VNO Series incorporates an advanced Pre-Compression Volume (PCV) port geometry that dampens hydraulic flow ripple and reduces pressure pulsation by up to 50%, resulting in exceptionally low operating noise. Designed with stable preloaded drive shaft bearings, high permissible rotational speeds (up to 3200 rpm), favorable power-to-weight ratio, standard SAE J744 2-bolt / 4-bolt mounting flanges, ANSI B92.1a splined drive shafts, ISO 6162-1 (SAE Code 61) split-flange ports, and full-torque through-drive couplings (SAE A, SAE B, SAE C), the HYH10VNO Series supports versatile control devices including hydraulic pressure controllers (DR/DRG), load-sensing flow controllers (DRF/DRS/DRSC), and electroproportional pressure/flow regulators (ED71/ED72, EP, EK), offering an ultra-reliable, cost-effective drop-in replacement worldwide.
| Applications
The HYH10VNO Series variable swashplate pump is engineered specifically for open-circuit mobile machinery requiring fast electrohydraulic response, low pulsation, compact installation dimensions, and high operational reliability:
Agricultural Tractors & Implement Hydraulics: Primary open-circuit implement pump powering rear three-point hitch linkages, remote hydraulic spool valves, front-end loaders, and steering priority circuits.
On-Demand Electrohydraulic Fan Drives: High-efficiency, variable-speed radiator cooling fan drives for excavators, heavy wheel loaders, agricultural combines, and stationary gensets using ED/EP electroproportional pressure control.
Harvesters & Agricultural Specialty Equipment: Supplies load-sensing auxiliary hydraulic power for header positioners, conveyor reel drives, and discharge augers with DRF/DRS flow-matched efficiency.
Municipal Utility & Sweeper Auxiliary Circuits: Powers gutter broom rotation, vacuum blower motors, body hoist cylinders, and municipal spreading equipment.
Mobile Telescopic Handlers & Compact Loaders: Powers boom telescoping cylinders, bucket tilt functions, outrigger stabilizers, and hydraulic quick-coupler circuits.
Tandem Auxiliary Multi-Pump Power Packs: Utilizes standardized rear through-drive configurations (SAE A, SAE B, SAE C) to drive secondary steering gear pumps or pilot charge units with 100% full-torque transfer.
| Key Specifications Overview
| Parameter | Hengyuhang HYH10VNO Series 5x Specification (OEM Benchmark Standard) |
|---|---|
| Pump Classification | Axial Piston Variable Displacement Pump in Swashplate Design for Open Circuits (HYH10VNO Series 52 & 53) |
| OEM Interchange Reference | Direct dimensional, functional, and hydraulic drop-in replacement for Rexroth A10VNO Series 52 & Series 53 |
| Standard Displacement Range | 4 Standard Frame Sizes: 28, 45, 63, and 85 cm³/rev (1.71, 2.75, 3.84, and 5.19 in³/rev) |
| Nominal Continuous Pressure (pnom) | 210 bar (3050 psi / 21 MPa) continuous working pressure at service port B |
| Maximum Peak Operating Pressure (pmax) | 250 bar (3600 psi / 25 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 (235,000 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 2700 rpm (Sizes 63 & 85) up to 3200 rpm (Size 28); Minimum continuous speed: 500 rpm |
| Suction Pressure Range (Port S Inlet) | Continuous pS min ≥ 0.8 bar absolute (10 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 | Code C: ISO 3019-1 (SAE J744) 2-bolt (SAE A for size 28; SAE B for sizes 45, 63, 85); Code D: SAE C 4-bolt (Size 85) |
| Drive Shaft Configurations | ANSI B92.1a splined shafts: Code S (standard ISO 3019-1), Code M (long undercut for size 85), Code R (reinforced torque) |
| Working Fluid Ports (Port B Outlet) | ISO 6162-1 (SAE Code 61) flange ports: 3/4 in (Sizes 28 & 45), 1 in (Sizes 63 & 85), 250 bar rated (metric DIN 13 or UNC threads) |
| Suction Fluid Ports (Port S Inlet) | ISO 6162-1 (SAE Code 61) flange ports: 1 1/4 in (Sizes 28 & 45), 1 1/2 in (Size 63), 2 in (Size 85), 5 bar rated |
| Case Drain Fluid Ports (Ports L, L1, L2) | ISO 11926 standard: 3/4-16 UNF-2B (Sizes 28 & 45); 7/8-14 UNF-2B (Sizes 63 & 85) with metric conversion options |
| 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) 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 @ 210 bar (kW / HP) | Torque Output @ 210 bar (Nm / lb-ft) | Rotary Stiffness c (Nm/rad) | Angular Accel. α (rad/s²) | Case Fill (L / gal) | Unit Mass m (kg / lbs) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal n_nom | Minimum n_min | Shaft S / M | Shaft R | w/o Thru-Drive | with Thru-Drive | |||||||
| HYH10VNO-28 | 28.00 (1.71) | 3200 | 500 | 90.0 (23.8) | 31.0 (42.0) | 94.0 (69.0) | 11,000 | 14,800 | 6800 | 0.25 (0.06) | 11.5 (25.0) | 13.0 (28.6) |
| HYH10VNO-45 | 45.00 (2.75) | 2900 | 500 | 131.0 (34.6) | 46.0 (62.0) | 150.0 (110.0) | 22,300 | 26,500 | 4900 | 0.30 (0.08) | 15.0 (33.0) | 18.0 (40.0) |
| HYH10VNO-63 | 63.00 (3.84) | 2700 | 500 | 170.0 (45.0) | 59.0 (79.0) | 210.0 (155.0) | 37,500 | 40,500 | 3500 | 0.50 (0.13) | 18.0 (40.0) | 24.0 (53.0) |
| HYH10VNO-85 | 85.00 (5.19) | 2700 | 500 | 230.0 (60.8) | 80.0 (107.0) | 284.0 (209.0) | 57,400 (Shaft M) | 69,400 | 2500 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| 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 210/250 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. |
| 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. |
| DRS / DRSC | Pressure and Flow Controller (Load-Sensing, X-T Plugged) | Port X plugged with internal flushing function (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). |
| EP1D / EP2D | Electroproportional Pressure Control (Positive Characteristic) | Electric proportional solenoid (EP1D: 12V DC / EP2D: 24V DC) | Electrical pressure regulation with positive characteristic where system working pressure rises proportionally with increasing control current. |
| EP.DF / EP.DS | Electroproportional Pressure and Flow Control (Load-Sensing) | Combined electric proportional pressure solenoid and hydraulic LS port X | Integrates electroproportional pressure limit control with hydraulic load-sensing flow matching for advanced tractor implement hydraulics. |
| EK Series | Electroproportional Control with Controller Cut-Off | Integrated electronic controller cut-off valve mechanism | Provides rapid electronic de-stroking and controller cut-off protection during rapid implement valve closure or emergency system shutdown. |
| 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) |
|---|---|---|---|
| HYH10VNO-28 | Code C: 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 shaft 3/4 in 11T 16/32DP (ext. 38.0 mm); Code R: Splined shaft 3/4 in 11T 16/32DP (reinforced, ext. 38.0 mm) | Port B Working: ISO 6162-1 3/4 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/4 in (5 bar, M10×1.5 or 7/16-14 UNC); Drain L/L1/L2: ISO 11926 3/4-16 UNF-2B (13 deep); Pilot X: 7/16-20 UNF-2B |
| HYH10VNO-45 | Code C: 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 shaft 7/8 in 13T 16/32DP (ext. 41.0 mm); Code R: Splined shaft 7/8 in 13T 16/32DP (reinforced, ext. 41.0 mm) | Port B Working: ISO 6162-1 3/4 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/4 in (5 bar, M10×1.5 or 7/16-14 UNC); Drain L/L1/L2: ISO 11926 3/4-16 UNF-2B (12 deep); Pilot X: 7/16-20 UNF-2B |
| HYH10VNO-63 | Code C: 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 shaft 1 in 15T 16/32DP (ext. 45.9 mm); Code R: Splined shaft 1 in 15T 16/32DP (reinforced, ext. 45.9 mm) | Port B Working: ISO 6162-1 1 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/2 in (5 bar, M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: ISO 11926 7/8-14 UNF-2B (13 deep); Pilot X: 7/16-20 UNF-2B |
| HYH10VNO-85 | Code C: ISO 3019-1 (SAE B 2-bolt): Pilot Ø101.6 mm, pitch 146 mm; Code D: ISO 3019-1 (SAE C 4-bolt): Pilot Ø127.0 mm, 4 × Ø14 mm holes on Ø161.9 mm pitch circle | Code S: Splined 1 1/4 in 14T 12/24DP; Code M: Splined 1 1/4 in 14T 12/24DP (long undercut, ext. 55.5 mm); Code R: Splined 1 1/4 in 14T (reinforced) | Port B Working: ISO 6162-1 1 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 2 in (5 bar, M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: ISO 11926 7/8-14 UNF-2B (13 deep); 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 (HYH10VNO-28) |
| K68 | ISO 3019-1 101-2 (SAE B 2-bolt) | Spline ANSI B92.1a 7/8 in 13T 16/32DP | Secondary HYH10VNO-45, HYH10VSO-28/45, cast iron gear pumps |
| K04 | ISO 3019-1 101-2 (SAE B 2-bolt) | Spline ANSI B92.1a 1 in 15T 16/32DP | Secondary HYH10VNO-63, heavy-duty mobile gear pumps (Sizes 63 & 85) |
| K15 | ISO 3019-1 127-4 (SAE C 4-bolt) | Spline ANSI B92.1a 1 1/4 in 14T 12/24DP | Heavy secondary piston pumps up to same frame size (Size 85 only) |
| Direct Interchangeability and OEM Replacement Matrix (Rexroth A10VNO Series 52 & 53)
| Hengyuhang Series Model | OEM Original Rexroth Reference Model | Flange & Shaft Standard | Interchangeability Verification Status |
|---|---|---|---|
| HYH10VNO-28 | A10VNO 28 DR / 53R-VSC11N00 (or DRF / 53R-VSC12N00) | SAE A 2-Bolt, 3/4 in 11T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-28 | A10VNO 28 ED72 / 53R-VSC12N00 (Fan Drive) | SAE A 2-Bolt, 3/4 in 11T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-45 | A10VNO 45 DR / 52R-VSC11N00 (or 53R-VSC12N00) | SAE B 2-Bolt, 7/8 in 13T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-45 | A10VNO 45 DRF / 52R-VSC12N00 (Load-Sensing) | SAE B 2-Bolt, 7/8 in 13T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-63 | A10VNO 63 DRF / 52R-VSC12N00 (or 53R-VSC12N00) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-63 | A10VNO 63 ED72 / 52R-VSC12N00 (Fan Drive) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-85 | A10VNO 85 DRF / 53R-VMC12N00 (SAE B 2-Bolt) | SAE B 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-85 | A10VNO 85 DRF / 53R-VMD12N00 (SAE C 4-Bolt) | SAE C 4-Bolt, 1 1/4 in 14T 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 | HYH10VN | Swashplate variable displacement machine, nominal pressure 210 bar (3050 psi), max 250 bar (3600 psi) |
| [02] Mode | Circuit Operation Mode | O | Open-circuit hydrostatic drive pump |
| [03] Frame Size | Geometric Displacement (cm³) | 28 / 45 / 63 / 85 | Nominal displacement size Vg max in cm³/rev (28, 45, 63, 85) |
| [04] Control Device | Displacement Control Mechanism | DR / DRG / DRF / DRS / DRSC / ED71 / ED72 / EP / EK | DR: Pressure control; DRF/DRS: Load-sensing; DRG: Remote pressure; ED71/72: Electrohydraulic fan control; EP/EK: Proportional |
| [05] Series | Series Designation | 52 / 53 | Code 52: Series 5, Index 2 (Sizes 45 & 63); Code 53: Series 5, Index 3 (Sizes 28, 45, 63, 85) |
| [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 / M / R | Code S: ANSI B92.1a standard splined shaft; Code M: Long undercut (standard on size 85); Code R: Reinforced higher torque |
| [09] Mounting Flange | Mounting Flange Style | C / D | Code C: ISO 3019-1 2-bolt (SAE A on size 28; SAE B on sizes 45, 63, 85); Code D: ISO 3019-1 4-bolt (SAE C on size 85) |
| [10] Working Ports | Service Port Configuration | 11 / 12 / 32 / 61 / 62 / 82 | Codes 11/12: SAE metric threads (11 rear, 12 lateral opposite); Code 32: with PCV; Codes 61/62/82: SAE UNC threads |
| [11] Through Drive | Rear Auxiliary Attachment | N00 / K01 / K52 / K68 / K04 / K15 | Code N00: Without through drive; Codes K01~K15: 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 @ 210 bar (kW / HP) | Torque Output @ 210 bar (Nm / lb-ft) | Rotary Stiffness c (Nm/rad) | Angular Accel. α (rad/s²) | Case Fill (L / gal) | Unit Mass m (kg / lbs) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal n_nom | Minimum n_min | Shaft S / M | Shaft R | w/o Thru-Drive | with Thru-Drive | |||||||
| HYH10VNO-28 | 28.00 (1.71) | 3200 | 500 | 90.0 (23.8) | 31.0 (42.0) | 94.0 (69.0) | 11,000 | 14,800 | 6800 | 0.25 (0.06) | 11.5 (25.0) | 13.0 (28.6) |
| HYH10VNO-45 | 45.00 (2.75) | 2900 | 500 | 131.0 (34.6) | 46.0 (62.0) | 150.0 (110.0) | 22,300 | 26,500 | 4900 | 0.30 (0.08) | 15.0 (33.0) | 18.0 (40.0) |
| HYH10VNO-63 | 63.00 (3.84) | 2700 | 500 | 170.0 (45.0) | 59.0 (79.0) | 210.0 (155.0) | 37,500 | 40,500 | 3500 | 0.50 (0.13) | 18.0 (40.0) | 24.0 (53.0) |
| HYH10VNO-85 | 85.00 (5.19) | 2700 | 500 | 230.0 (60.8) | 80.0 (107.0) | 284.0 (209.0) | 57,400 (Shaft M) | 69,400 | 2500 | 0.80 (0.21) | 22.0 (48.5) | 28.0 (62.0) |
| Size Model | Mounting Flange Standards | Drive Shaft Options (ANSI B92.1a / ISO) | Fluid Port Connections (Working, Suction, Drain & Pilot) |
|---|---|---|---|
| HYH10VNO-28 | Code C: 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 shaft 3/4 in 11T 16/32DP (ext. 38.0 mm); Code R: Splined shaft 3/4 in 11T 16/32DP (reinforced, ext. 38.0 mm) | Port B Working: ISO 6162-1 3/4 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/4 in (5 bar, M10×1.5 or 7/16-14 UNC); Drain L/L1/L2: ISO 11926 3/4-16 UNF-2B (13 deep); Pilot X: 7/16-20 UNF-2B |
| HYH10VNO-45 | Code C: 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 shaft 7/8 in 13T 16/32DP (ext. 41.0 mm); Code R: Splined shaft 7/8 in 13T 16/32DP (reinforced, ext. 41.0 mm) | Port B Working: ISO 6162-1 3/4 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/4 in (5 bar, M10×1.5 or 7/16-14 UNC); Drain L/L1/L2: ISO 11926 3/4-16 UNF-2B (12 deep); Pilot X: 7/16-20 UNF-2B |
| HYH10VNO-63 | Code C: 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 shaft 1 in 15T 16/32DP (ext. 45.9 mm); Code R: Splined shaft 1 in 15T 16/32DP (reinforced, ext. 45.9 mm) | Port B Working: ISO 6162-1 1 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 1 1/2 in (5 bar, M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: ISO 11926 7/8-14 UNF-2B (13 deep); Pilot X: 7/16-20 UNF-2B |
| HYH10VNO-85 | Code C: ISO 3019-1 (SAE B 2-bolt): Pilot Ø101.6 mm, pitch 146 mm; Code D: ISO 3019-1 (SAE C 4-bolt): Pilot Ø127.0 mm, 4 × Ø14 mm holes on Ø161.9 mm pitch circle | Code S: Splined 1 1/4 in 14T 12/24DP; Code M: Splined 1 1/4 in 14T 12/24DP (long undercut, ext. 55.5 mm); Code R: Splined 1 1/4 in 14T (reinforced) | Port B Working: ISO 6162-1 1 in (250 bar, M10×1.5 or 3/8-16 UNC); Port S Suction: ISO 6162-1 2 in (5 bar, M12×1.75 or 1/2-13 UNC); Drain L/L1/L2: ISO 11926 7/8-14 UNF-2B (13 deep); Pilot X: 7/16-20 UNF-2B |
| Hengyuhang Series Model | OEM Original Rexroth Reference Model | Flange & Shaft Standard | Interchangeability Verification Status |
|---|---|---|---|
| HYH10VNO-28 | A10VNO 28 DR / 53R-VSC11N00 (or DRF / 53R-VSC12N00) | SAE A 2-Bolt, 3/4 in 11T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-28 | A10VNO 28 ED72 / 53R-VSC12N00 (Fan Drive) | SAE A 2-Bolt, 3/4 in 11T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-45 | A10VNO 45 DR / 52R-VSC11N00 (or 53R-VSC12N00) | SAE B 2-Bolt, 7/8 in 13T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-45 | A10VNO 45 DRF / 52R-VSC12N00 (Load-Sensing) | SAE B 2-Bolt, 7/8 in 13T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-63 | A10VNO 63 DRF / 52R-VSC12N00 (or 53R-VSC12N00) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-63 | A10VNO 63 ED72 / 52R-VSC12N00 (Fan Drive) | SAE B 2-Bolt, 1 in 15T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-85 | A10VNO 85 DRF / 53R-VMC12N00 (SAE B 2-Bolt) | SAE B 2-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
| HYH10VNO-85 | A10VNO 85 DRF / 53R-VMD12N00 (SAE C 4-Bolt) | SAE C 4-Bolt, 1 1/4 in 14T Spline | 100% Direct Physical & Functional Drop-in Replacement |
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