Piston Motors
HENGYUHANG Axial Piston Plug-In Variable Motor HYH10VE Series 52
HENGYUHANG HYH10VE Series 52 is a high-speed swashplate axial piston plug-in variable displacement motor designed for space-saving direct installation into mechanical planetary reduction gearboxes, delivering 280 bar nominal continuous pressure (350 bar peak), steplessly adjustable minimum displacement, bi-directional rotation, and seamless 1:1 drop-in interchangeability with Bosch Rexroth A10VE Series 52 motors.
| Applications
Engineered specifically for space-restricted hydrostatic travel drives, wheel drives, track drives, winch gearboxes, and slewing gearboxes across mobile machinery, including compact wheel loaders, mini and compact crawler excavators, skid steer loaders, aerial work platforms, road rollers, telehandlers, municipal sweepers, and forestry equipment requiring direct plug-in gearbox mounting.
| Key Technical Specifications
Product Model: HYH10VE Series 52 (Sizes 28, 45, 63)
Brand Replacement: Bosch Rexroth A10VE Series 52 (Sizes 28, 45, 63), OEM or as requested.
Displacement: Maximum displacement Vg max = 28.0 cm³/rev (Size 28), 45.0 cm³/rev (Size 45), 62.0 cm³/rev (Size 63); steplessly adjustable minimum displacement Vg min down to 10.0 / 12.0 / 16.0 cm³/rev
Rotation Direction: Bi-directional (W), viewed facing drive shaft (Port A to B: counter-clockwise; Port B to A: clockwise)
Speed Range: Rated speed at Vg max n nom 3,300–4,700 rpm; maximum permissible speed at Vg min n max perm 3,900–5,400 rpm (n min = 250 rpm continuous)
Peak Pressure: Nominal continuous operating pressure p nom = 280 bar (4,000 psi) / Maximum peak pressure p max = 350 bar (5,100 psi)
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| Overview of HENGYUHANG HYH10VE Series 52 Hydraulic Motors
The HENGYUHANG HYH10VE Series 52 is an advanced swashplate axial piston variable displacement plug-in motor specifically developed for direct integration into planetary gearboxes, wheel drives, and winch drums where axial and radial installation envelope space is severely constrained. Serving as a dedicated 1:1 dimensional, physical, and functional drop-in replacement for the Bosch Rexroth A10VE Series 52 family, this series encompasses three standardized frame sizes spanning maximum geometric displacements of 28.0 cm³/rev, 45.0 cm³/rev, and 62.0 cm³/rev.
Featuring a specialized recessed 2-hole plug-in mounting flange (Flange F) that recesses the entire motor cylinder barrel and rotating group directly inside the customer gearbox housing, the HYH10VE eliminates external coupling shafts, adapter bellhousings, and bulky bracketry. Motor output speed is directly proportional to inlet hydraulic flow rate and inversely proportional to motor displacement angle; output torque increases proportionally to operating differential pressure between high and low-pressure ports and instantaneous displacement. Built around proven A10 rotary group technology with heavy-duty hydrostatic cradle bearings, bi-metal cylinder barrel tribology, and one-piece spherical slipper pistons, the motor is approved for high continuous drive speeds up to 5,400 rpm. With externally adjustable minimum displacement stops (Vgmin), bi-directional rotation, modular two-point hydraulic (HZ) and electrical (EZ) two-speed controls (12V/24V), optional integrated flushing and boost-pressure valves, and prepared speed-sensor ports, the HYH10VE delivers exceptional power density, robust reliability, and whisper-quiet operation across demanding mobile machinery drives.
| Dimension of HENGYUHANG HYH10VE Series 52 Hydraulic Motors
| Mechanical Installation Interface Specifications
| Frame Size (HYH10VE) | Plug-In Mounting Flange Standard | Drive Shaft Spline Options (ANSI B92.1a / ISO 3019-1) |
|---|---|---|
| HYH10VE28 | Special 2-Hole Plug-In Flange F, Spigot Ø135.0 mm (-0.063 mm), Hole Pitch 160 mm, Bolt Hole Ø19 mm | R: 7/8 in 13T 16/32DP (Spline Length 25 mm, Center Thread 7/16-20 UNC-2B) |
| HYH10VE45 | Special 2-Hole Plug-In Flange F, Spigot Ø135.0 mm (-0.063 mm), Hole Pitch 160 mm, Bolt Hole Ø19 mm | R: 1 in 15T 16/32DP (Spline Length 29.5 mm); W: 7/8 in 13T 16/32DP (Reduced Torque) |
| HYH10VE63 | Special 2-Hole Plug-In Flange F, Spigot Ø160.0 mm (-0.063 mm), Hole Pitch 190 mm, Bolt Hole Ø21 mm | R: 1 1/4 in 14T 12/24DP (Spline Length 40 mm); W: 1 in 15T 16/32DP (Reduced Torque) |
| Frame Size (HYH10VE) | Working Line Ports A & B (Port Plate 10 / 11) | Threaded Working Ports A & B (Port Plate 16 / 66) | Case Drain Ports L & L1 (ISO 11926) | External Control Pressure Port G / G1 | Pilot Pressure Port X (HZ Control) | Speed Sensor Options |
|---|---|---|---|---|---|---|
| HYH10VE28 | Port Plate 10: SAE 3/4 in Lateral (M10×1.5, 17 deep; 350 bar) | Port Plate 16: M27×2 (16 deep; 350 bar); Port Plate 66: 1 1/16-12 UN-2B (20 deep) | 3/4-16 UNF-2B (15 deep; max 2 bar static, 4 bar peak) | 7/16-20 UNF-2B (12 deep; max 350 bar) | 7/16-20 UNF-2B (12 deep; max 350 bar) | Prepared for DST / DSAx speed sensor (Port W) |
| HYH10VE45 | Port Plate 10: SAE 3/4 in Lateral; Port Plate 11: SAE 3/4 in Rear (M10×1.5, 17 deep) | Port Plate 16: M27×2 (16 deep; 350 bar); Port Plate 66: 1 1/16-12 UN-2B (20 deep) | 7/8-14 UNF-2B (17 deep; max 2 bar static, 4 bar peak) | 7/16-20 UNF-2B (12 deep; max 350 bar) | 7/16-20 UNF-2B (12 deep; max 350 bar) | Prepared for DST / DSAx speed sensor (Port W) |
| HYH10VE63 | Port Plate 10: SAE 3/4 in Lateral (M10×1.5, 17 deep; 350 bar) | Port Plate 16: M27×2 (16 deep; 350 bar); Port Plate 66: 1 1/16-12 UN-2B (20 deep) | 7/8-14 UNF-2B (17 deep; max 2 bar static, 4 bar peak) | 7/16-20 UNF-2B (12 deep; max 350 bar) | 7/16-20 UNF-2B (12 deep; max 350 bar) | Prepared for DST / DSAx speed sensor (Port W) |
| Interface Engineering Notes
Special Plug-In Flange F: The precision pilot spigot (Ø135 mm for sizes 28/45, Ø160 mm for size 63 with tolerance class h8/f7) pilots directly into the planetary gearbox bore, supported by an integrated O-ring sealing groove on the pilot face.
Drive Shaft Spline: ANSI B92.1a involute spline with 30° pressure angle, flat root, side fit, tolerance class 5, featuring a modified spline runout optimized for direct engagement with planetary sun gears.
Working Port Options: Port Plate 10 (lateral high-pressure SAE 3/4" with metric M10 threads), Port Plate 60 (lateral SAE 3/4" with 3/8-16 UNC threads), Port Plate 11/61 (rear high-pressure ports, size 45), Port Plate 16 (threaded M27×2 metric ports), and Port Plate 66 (threaded 1 1/16-12 UN ports).
Flushing Valve Option (Code 7): Integrated low-pressure flushing and circuit relief valve directs hot fluid from the closed circuit low-pressure side through the motor case for continuous cooling.
| Motor Installation Specifications
| Complete Ordering Code Structure
HYH10V−E−[Size]−[Control]/52 W−[Displacement Screw][Seal][Shaft][Flange][Ports][Valves][Sensor][Connector]
| Position | Code Segment | Available Designations & Options | Technical Description & Functional Purpose |
|---|---|---|---|
| 01 | Axial Piston Unit | HYH10V / A10V | Swashplate design, variable displacement, nominal pressure 280 bar, peak 350 bar |
| 02 | Operating Mode | E | Motor, plug-in design for open and closed circuits |
| 03 | Geometric Frame Size | 28, 45, 63 | Nominal maximum displacement in cm³/rev (28, 45, 62 cm³/rev) |
| 04 | Control Devices | DG HZ / HZ6 EZ1 / EZ6 EZ2 / EZ7 | DG: Two-point control direct operated, external control pressure supply, without on/off valve HZ / HZ6: Hydraulic two-point control without (HZ) or with (HZ6) switching time orifice EZ1 / EZ6: Electric two-point control with switching solenoid, U = 12 V, without (EZ1) or with (EZ6) orifice EZ2 / EZ7: Electric two-point control with switching solenoid, U = 24 V, without (EZ2) or with (EZ7) orifice |
| 05 | Series | 52 | Series 5, Index 2 |
| 06 | Direction of Rotation | W | Bi-directional rotation, viewed facing drive shaft |
| 07 | Minimum Displacement | 1, 2 | 1: Vgmin steplessly adjustable range 1 (10–28 for 28; 12–25 for 45; 16–38 for 63 cm³/rev) 2: Vgmin steplessly adjustable range 2 (26–45 for 45; 40–62 for 63 cm³/rev) |
| 08 | Sealing Material | V | FKM (fluorocarbon rubber) dynamic and static seals |
| 09 | Drive Shaft Type | R, W | R: Involute splined shaft ANSI B92.1a for high torque W: Involute splined shaft ANSI B92.1a for reduced torque (Sizes 45, 63) |
| 10 | Mounting Flange | F | Special 2-hole plug-in flange (Ø135 mm spigot for 28/45; Ø160 mm spigot for 63) |
| 11 | Working Line Ports | 10N00, 11N00, 16N00 | 10N00: Lateral opposite SAE 3/4" ports, metric threads 11N00: Rear SAE 3/4" ports, metric threads (Size 45) 16N00: Lateral M27×2 metric threaded ports 60N00/61N00: Lateral/rear SAE 3/4" with UNC threads 66N00: Lateral 1 1/16-12 UN threaded ports |
| 12 | Valves | 0, 7 | 0: Without valve block 7: Integrated flushing and boost-pressure valve (for working line ports 10, 16, 60, 66) |
| 13 | Speed Sensing | Blank / W / C / K / E | Blank: Without speed sensing W: Prepared for sensor DST or DSAx/20 C: Sensor DSA1/20 mounted (1 frequency + direction signal) K: Sensor DSA2/20 mounted (2 phase-shifted frequency signals) E: Sensor DST mounted |
| 14 | Connector for Solenoid | Blank / P | Blank: Without connector (hydraulic control) P: DEUTSCH molded 2-pin connector (DT04-2P), without suppressor diode |
| Reading Your Replacement Code
| Rexroth OEM Model Code | HENGYUHANG Drop-In Code | Displacement (Vgmax / Vgmin) | Control Execution | Drive Shaft & Flange | Ports & Optional Valves |
|---|---|---|---|---|---|
| A10VE28EZ2/52W-V1RF10N000P | HYH10VE28EZ2/52W-V1RF10N000P | 28.0 cm³ / 10.0 cm³ | Electric 2-Position (24V DC EZ2) | Splined R (7/8" 13T), Plug-In Flange F | SAE 3/4" Lateral Metric, DEUTSCH |
| A10VE28HZ/52W-V1RF16N000 | HYH10VE28HZ/52W-V1RF16N000 | 28.0 cm³ / 10.0 cm³ | Hydraulic 2-Position (HZ) | Splined R (7/8" 13T), Plug-In Flange F | Threaded M27×2 Ports, Standard |
| A10VE45EZ2/52W-V1RF10N007P | HYH10VE45EZ2/52W-V1RF10N007P | 45.0 cm³ / 12.0 cm³ | Electric 2-Position (24V DC EZ2) | Splined R (1" 15T), Plug-In Flange F | SAE 3/4" Lateral + Flushing Valve (7) |
| A10VE45EZ1/52W-V1RF11N000P | HYH10VE45EZ1/52W-V1RF11N000P | 45.0 cm³ / 12.0 cm³ | Electric 2-Position (12V DC EZ1) | Splined R (1" 15T), Plug-In Flange F | SAE 3/4" Rear Ports (11N00), DEUTSCH |
| A10VE63EZ2/52W-V1RF10N007P | HYH10VE63EZ2/52W-V1RF10N007P | 62.0 cm³ / 16.0 cm³ | Electric 2-Position (24V DC EZ2) | Splined R (1 1/4" 14T), Plug-In Flange F | SAE 3/4" Lateral + Flushing Valve (7) |
| A10VE63HZ6/52W-V1RF10N000 | HYH10VE63HZ6/52W-V1RF10N000 | 62.0 cm³ / 16.0 cm³ | Hydraulic Control + Orifice (HZ6) | Splined R (1 1/4" 14T), Plug-In Flange F | SAE 3/4" Lateral Metric, Standard |
Technical Specifications of HENGYUHANG HYH10VE Series (Sizes 28–63)
4.1 Frame Size Performance Matrix (Data at optimum viscosity νₒₚₜ=16…36 mm²/s, mineral fluid)
| Performance Parameter | Unit | HYH10VE28 | HYH10VE45 | HYH10VE63 |
|---|---|---|---|---|
| Max Geometric Displacement (Vgₘₐₓ) | cm³/rev | 28.0 | 45.0 | 62.0 |
| Minimum Displacement Range 1 (Vg min adjustable) | cm³/rev | 10.0 to 28.0 | 12.0 to 25.0 | 16.0 to 38.0 |
| Minimum Displacement Range 2 (Vg min adjustable) | cm³/rev | — | 26.0 to 45.0 | 40.0 to 62.0 |
| Max Rotational Speed at Vgₘₐₓ (nₙₒₘ) | rpm | 4,700 | 4,000 | 3,300 |
| Max Permissible Speed at Vg min (n_max perm) | rpm | 5,400 | 4,600 | 3,900 |
| Minimum Operating Speed (n_min continuous) | rpm | 250 | 250 | 250 |
| Inlet Flow Rate at nₙₒₘ and Vgₘₐₓ (qV_max) | L/min | 131.6 | 180.0 | 205.0 |
| Theoretical Output Torque at Vgₘₐₓ and p_N=280 bar (M_max) | Nm | 125 | 200 | 276 |
| Actual Starting Torque at n=0 rpm and p_N=280 bar | Nm | 92 | 149 | 205 |
| Drive Shaft Torsional Stiffness Shaft R (c) | Nm/rad | 26,000 | 41,000 | 69,400 |
| Drive Shaft Torsional Stiffness Shaft W (c) | Nm/rad | 19,800 | 34,400 | 54,000 |
| Rotary Group Moment of Inertia (J_TW) | kg·m² | 0.0017 | 0.0033 | 0.0056 |
| Maximum Permissible Angular Acceleration (α) | rad/s² | 5,500 | 4,000 | 3,300 |
| Housing Case Fluid Volume | L | 0.6 | 0.7 | 0.8 |
| Weight (Approximate Dry Mass) | kg | 14 | 18 | 26 |
4.2 Operating Pressure Boundaries
| Pressure Characteristic | Permissible Value | Operational Definition & Safety Limits |
|---|---|---|
| Nominal Operating Pressure (pₙₒₘ) | 280 bar (4,000 psi) | Maximum continuous design fatigue pressure according to ISO/DIN standards |
| Maximum Peak Pressure (pₘₐₓ) | 350 bar (5,100 psi) | Maximum transient peak within single operating period (t≤2.5 ms, total accumulated ≤300 h) |
| Minimum Pressure on High-Pressure Side (p_HD absolute) | ≥10 bar (145 psi) absolute | Minimum pressure at port A or B required to prevent rotary group separation |
| Minimum Pressure on Low-Pressure Side (p_ND min absolute) | ≥2 bar (29 psi) absolute | Minimum pressure at low-pressure port to prevent cavitation during motor overrun |
| Rate of Pressure Change (RAₘₐₓ) | 16,000 bar/s (232,000 psi/s) | Maximum permissible speed of pressure build-up and reduction across duty cycle |
| Case Drain Permissible Pressure (p_L max at Ports L, L1) | ≤2 bar (29 psi) absolute | Continuous static case pressure; maximum 0.5 bar higher than inlet pressure; peak ≤4 bar |
| Control Operating Pressure at Port G / X | ≤350 bar (5,100 psi) | Maximum allowable control signal pressure rating |
4.3 Hydraulic Fluid & Temperature Operational Limits
| Fluid Characteristic | Permissible Value | Operational Note |
|---|---|---|
| Recommended Fluid Media | Mineral oil (HLP to DIN 51524) | High-performance petroleum-based hydraulic fluid with anti-wear additives |
| Optimum Operating Viscosity (νₒₚₜ) | 16 to 36 mm²/s | Optimum balance of volumetric efficiency, response time, and bearing life |
| Continuous Operating Viscosity | 10 to 400 mm²/s | Full operational envelope with continuous temperature monitoring measured at port L |
| Minimum Viscosity (νₘᵢₙ) | 7 to 10 mm²/s | Short-term limit (t≤1 min) at p≤0.3⋅pₙₒₘ, T_max=+110 ∘C (FKM) |
| Maximum Viscosity at Cold Start (νₘₐₓ) | 1,600 mm²/s | Permissible at cold start (p≤30 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 dynamic seals |
| Fluid Cleanliness Class | ISO 4406 Class 20/18/15 | At elevated temperatures (>90 ∘C), maintain Class 19/17/14 minimum |
Product Advantages
Ultra-Compact Direct Plug-In Planetary Integration
The specialized 2-hole recessed flange pilots the entire rotating group directly into mechanical gearbox hubs, eliminating intermediate couplings, drive shafts, and mounting brackets for maximum vehicle chassis compactness.
Approved for High Rotational Speeds (Up to 5,400 rpm)
Precision-balanced bi-metal cylinder block kinematics and lightweight tapered pistons permit high continuous input speeds at reduced displacement without cavitation or slipper lift-off.
Two-Speed Displacement Flexibility with Stepless Minimum Limit
Externally adjustable minimum displacement stops allow fine-tuning of machine top travel speed or winch hoisting velocity while retaining maximum displacement torque for high-load climbing.
Proven A10 Rotary Group Reliability
Incorporates field-tested A10 swashplate components, hydrostatic cradle bearings, and high-strength ductile iron housings for extended service life under continuous cyclic loading.
Bi-Directional Reversible Rotation
Symmetric valve plates and porting support smooth bi-directional operation across forward/reverse drive or hoisting/lowering cycles.
Integrated Flushing & Speed Sensing Options
Available with internal loop flushing valves for closed-circuit heat dissipation and factory-installed Hall-effect speed sensors (DSAx/DST) for precise digital traction control.
| Interchangeability & Cross Reference
6.1 Direct Replacement Matrix: Bosch Rexroth A10VE to HENGYUHANG HYH10VE
| OEM Model Code | Max Displacement | Min Displacement Range | Plug-In Flange Pilot | Working Ports | HENGYUHANG 1:1 Replacement |
| A10VE28.../52 | 28.0 cm³/rev | 10.0 to 28.0 cm³/rev | Special Flange F (Ø135 mm Pilot, 160 mm PCD) | SAE 3/4" (Code 10) / M27×2 (Code 16) | HYH10VE28 |
| A10VE45.../52 | 45.0 cm³/rev | 12.0 to 25.0 cm³/rev (Range 1) 26.0 to 45.0 cm³/rev (Range 2) | Special Flange F (Ø135 mm Pilot, 160 mm PCD) | SAE 3/4" Lateral (10) / Rear (11) / M27×2 (16) | HYH10VE45 |
| A10VE63.../52 | 62.0 cm³/rev | 16.0 to 38.0 cm³/rev (Range 1) 40.0 to 62.0 cm³/rev (Range 2) | Special Flange F (Ø160 mm Pilot, 190 mm PCD) | SAE 3/4" (Code 10) / M27×2 (Code 16) | HYH10VE63 |
6.2 Modular Controller Functionality Mapping
| Controller Code | Control Mechanism | Operating Characteristic | Machine Operational Role |
| DG | Two-Point Direct Control | Direct-operated by external control pressure signal (Port G) | Simple 2-speed shifting via machine hydraulic pilot circuit |
| HZ | Hydraulic Two-Point Control | Switched hydraulically via pilot pressure line (Port X) | Standard 2-speed travel drive shifting (Turtle/Rabbit mode) |
| HZ6 | Hydraulic Two-Point + Orifice | Integrated damping orifice controls swashplate shift time | Smooth, shock-free speed transitions preventing operator jerk |
| EZ1 / EZ2 | Electric Two-Point Control | Solenoid actuated (U = 12 V for EZ1, 24 V for EZ2) | Direct electronic push-button or ECU-controlled 2-speed shifting |
| EZ6 / EZ7 | Electric Two-Point + Orifice | Electric solenoid with integrated switching time orifice (12V/24V) | Electronically managed smooth ratio shifting with DEUTSCH connector |
| Brand Replacement
Bosch Rexroth (Primary 1:1 direct interchangeability for A10VE Series 52 axial piston plug-in variable motors)
Danfoss (51V and 51D Series plug-in motors) and Eaton/Vickers (swashplate track drive plug-in motors)
Comer Industries, Bonfiglioli, and Brevini planetary gearbox drive motor retrofits engineered upon request
| Applications
Compact Track Loaders & Mini Excavators: Track drive propel motors plugged directly into track drive planetary gearboxes.
Compact Wheel Loaders & Telehandlers: Dual-displacement hydrostatic travel drive motors mounted into dropbox and axle gearboxes.
Aerial Work Platforms (Scissor & Boom Lifts): High-speed wheel drive motors integrated into planetary wheel hubs.
Mobile Winch Drives & Hoists: Compact variable motors plugged directly into internal winch drum reduction gears.
Road Rollers & Soil Compactors: Drum propel and vibratory drive mechanisms requiring smooth 2-speed shifting.
Municipal Sweepers & Utility Vehicles: Compact traction drive motors operating across low-speed working and high-speed roading modes.
| 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 HYH10VE plug-in motor undergoes automated test-bench trials verifying volumetric efficiency (> 94%), continuous and peak pressure hold at 280/350 bar, two-speed shift response hysteresis, case leakage limits, 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 A10VE Series 52 units with zero gearbox rework or adapter modification.
Flexible Engineering Customization & Rapid Prototyping: In-house hydraulic engineering team provides tailored displacement settings (Vg min), custom shift orifices, special shaft splines, 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 Plug-In Variable Motor HYH10VE Series 52 (Variable Swashplate Open & Closed Circuit Hydraulic Plug-In Motor, 10.00~62.00 cm³/rev) is a high-pressure, high-speed variable-displacement axial piston motor in swashplate design equipped with a specialized two-hole plug-in mounting flange engineered specifically for direct space-saving recessed integration into mechanical planetary gearboxes (such as planetary winch drives, crawler travel drives, and slewing reduction gearboxes). Manufactured by Quanzhou Hengyuhang Power Technology Co., Ltd. as an engineered, direct-fit replacement line designed to match the benchmark performance, mounting dimensions, pressure ratings, and hydraulic characteristics of the Rexroth A10VE Series 52 (RE 91703), the HYH10VE Series 52 utilizes field-proven A10 rotary group technology to deliver high permissible rotational speeds, outstanding power density, low operating noise, and an extended operational service life. Fluid delivery flow and output motor speed are directly proportional to displacement volume and input flow. Across its 3 standardized frame sizes—HYH10VE-28, HYH10VE-45, and HYH10VE-63—the series operates at a continuous nominal working pressure of 280 bar (4100 psi / 28 MPa) and a maximum peak operating pressure of 350 bar (5100 psi / 35 MPa), with approved continuous output speeds up to 4700 rpm on Size 28, 4000 rpm on Size 45, and 3300 rpm on Size 63 (and up to 5400 rpm at minimum displacement Vg min). The motor features external stepless adjustment of the minimum displacement angle (Vg min), allowing machine builders to fine-tune high-speed travel and winching ratios. Available with modular two-point displacement controllers including direct-operated hydraulic switching (DG), internal pilot hydraulic switching with optional damping orifice (HZ/HZ6), and 12V/24V electric solenoid controls (EZ1/EZ2/EZ6/EZ7), along with optional integrated case-flushing valves and digital inductive speed sensors, the HYH10VE Series 52 provides an optimized, drop-in replacement solution for modern compact hydrostatic gear drives.
| Applications
The HYH10VE Series 52 axial piston plug-in motor is engineered specifically for direct insertion into planetary reduction gearboxes in mobile and stationary hydraulic drive systems requiring compact axial length, high operational speeds, and dual-speed two-point displacement switching:
Mobile Crane & Winch Planetary Drum Drives: Plug-in motor installed directly inside planetary hoist and auxiliary winch drums on all-terrain, truck-mounted, and rough-terrain cranes, switching smoothly between high-torque load lifting (Vg max) and high-speed empty hook lowering (Vg min).
Crawler Undercarriage Compact Travel Drives: Recessed flange mounting inside compact planetary final track drives for mini-excavators, compact track loaders, trenchers, and crawler drilling rigs, providing two-speed automatic shift capability.
Excavator & Mobile Slewing Gearboxes: Direct flange coupling to planetary turntable slewing reducers on mobile excavators, timber forwarders, and harbour cranes for smooth, low-noise swing acceleration and deceleration.
Rotary Drilling Rig Mast Feed & Auxiliary Winches: Powers compact planetary winches and kelly-bar feed mechanisms on foundation piling and directional drilling rigs under severe cyclic pressure shocks.
Agricultural & Forestry Machine Track Drives: Compact hydrostatic drive integration for combine harvesters, fruit-picking platforms, forestry skidders, and mulching machines where axial envelope space is severely constrained.
Marine Deck Machinery & Capstan Drives: Heavy-duty, corrosion-resistant plug-in drive for mooring capstans, anchor windlasses, and offshore boat davit winches operating in open or closed hydrostatic circuits.
| Key Specifications Overview
| Parameter | Hengyuhang HYH10VE Series 52 Specification (OEM Benchmark Standard) |
|---|---|
| Motor Classification | Axial Piston Variable Displacement Plug-In Motor in Swashplate Design for Open and Closed Circuits (HYH10VE Series 52) |
| OEM Interchange Reference | Direct 1:1 physical, dimensional, and hydraulic drop-in replacement for Rexroth A10VE Series 52 (RE 91703) |
| Displacement Frame Sizes | 3 Standardized Plug-In Frame Sizes: HYH10VE-28 (28 cm³), HYH10VE-45 (45 cm³), and HYH10VE-63 (62 cm³/rev) |
| Plug-In Mechanical Design (Einbaumotor) | Specialized recessed 2-hole plug-in mounting flange for direct space-saving insertion into planetary gearbox housings |
| Nominal Continuous Pressure (pnom) | 280 bar (4100 psi / 28 MPa) continuous design working pressure at service ports A and B |
| Maximum Peak Operating Pressure (pmax) | 350 bar (5100 psi / 35 MPa) maximum peak pressure (single operating period 2.5 ms; cumulative maximum 300 h) |
| Minimum Pressure at High-Pressure Port (pHD abs) | 10 bar minimum absolute pressure required on high-pressure side (A or B) to prevent internal rotary group separation |
| Minimum Pressure at Low-Pressure Port (pND min) | 2 bar absolute minimum holding pressure on low-pressure side (A or B) to prevent cavitation during dynamic deceleration |
| Rate of Pressure Change (RA max) | 16,000 bar/s (232,060 psi/s) maximum permissible rate of pressure build-up and reduction across entire operating range |
| Maximum Rotational Speed at Vg max (nnom) | HYH10VE-28: 4700 rpm; HYH10VE-45: 4000 rpm; HYH10VE-63: 3300 rpm (continuous rated maximum speed at full displacement) |
| Maximum Permissible Speed at Vg min (nmax perm) | HYH10VE-28: 5400 rpm; HYH10VE-45: 4600 rpm; HYH10VE-63: 3900 rpm (high-speed travel and winching mode) |
| Minimum Operating Speed (nmin) | 250 rpm continuous minimum rotational speed across all frame sizes at full displacement |
| Case Drain Pressure Rating (Ports L, L1) | Maximum continuous case pressure pL max ≤ 2 bar absolute (30 psi, max 0.5 bar above inlet A/B); Drain line to reservoir required |
| External Minimum Swivel Angle Adjustment | Minimum displacement Vg min steplessly adjustable from outside via casing set screw (Size 28: 10~28; Size 45: 12~45; Size 63: 16~62 cm³) |
| Plug-In Mounting Flange Standards | Special 2-hole plug-in flange (Code F): Pilot Ø135 -0.063 mm (Sizes 28, 45); Pilot Ø160 -0.063 mm (Size 63) |
| Drive Shaft Configurations | Involute splined shaft similar to ISO 3019-1 (ANSI B92.1a 30°): Code R (high torque); Code W (reduced torque, Sizes 45, 63) |
| Working Fluid Ports (Service Ports A, B) | SAE J518 / ISO 6162-2 Code 62 3/4 in (Metric thread Code 10 / UNF Code 60); Rear ports (Code 11/61 on 45); Threaded ports (Code 16/66) |
| Case Drain Ports (L, L1) | ISO 11926 UN threaded ports: 3/4-16 UNF-2B (Size 28); 7/8-14 UNF-2B (Sizes 45, 63), 15~17 mm deep |
| External & Pilot Control Ports (G, G1, X) | ISO 11926 7/16-20 UNF-2B threaded ports (G/G1 external control pressure; X pilot pressure for hydraulic HZ control; 350 bar rated) |
| Integrated Flushing Valve Option | Optional internal flushing and boost-pressure valve (Code 7) on Sizes 45 and 63 for continuous bearing cooling and oil exchange |
| Optional Speed Sensing System | Optional digital inductive speed sensors DSA1, DSA2, or DST mounted in casing (Codes C, K, E) for closed-loop speed monitoring |
| Sealing Material System | Code V: Premium FKM (fluorocarbon rubber) standard (-25°C to +115°C permissible case fluid temperature) |
| Direction of Rotation | Bi-directional rotation (Code W): Clockwise (flow B to A); Counter-Clockwise (flow A to B), viewed facing 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 fluid temperatures from 90°C to 115°C) |
| Technical Performance Matrix Across Available Sizes
| ■ Axial Piston Variable Plug-In Motor Series (HYH10VE — 280 bar Nominal / 350 bar Peak Benchmark) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model Number (Hengyuhang Series) | Displacement (cm³/rev) | Rotational Speed (rpm) | Max Inlet Flow @ nnom (L/min) | Max Torque @ 280 bar (Nm) | Starting Torque @ 0 rpm (Nm) | Shaft Stiffness c (Nm/rad) | Rotary Inertia JTW (kg·m²) | Angular Accel. α (rad/s²) | Unit Mass m approx. (kg) | |||
| Maximum Vg max | Minimum Vg min | Nominal nnom | Max Perm. nmax | Shaft R | Shaft W | |||||||
| HYH10VE-28 | 28.00 | 10.00 (adj. 10~28) | 4700 | 5400 | 131.6 | 125.0 | 92.0 | 26,000 | 19,800 | 0.0017 | 5500 | 14.0 |
| HYH10VE-45 | 45.00 | 12.00 (adj. 12~45) | 4000 | 4600 | 180.0 | 200.0 | 149.0 | 41,000 | 34,400 | 0.0033 | 4000 | 18.0 |
| HYH10VE-63 | 62.00 | 16.00 (adj. 16~62) | 3300 | 3900 | 205.0 | 276.0 | 205.0 | 69,400 | 54,000 | 0.0056 | 3300 | 26.0 |
| Control Devices & Operating Regulating Mechanisms
| Control Code | Control Classification | Control Signal & Pilot Supply | Functional Operation & Machine Application |
|---|---|---|---|
| DG | Two-Point Control, Direct Operated | External switching pressure applied at port G or G1 (pst ≥ 40 bar) | Direct hydraulic actuation of the stroking piston; 0 bar at port G = Vg max (high torque / low speed), ≥40 bar at port G = Vg min (high speed). Eliminates internal pilot valving. |
| HZ | Two-Point Control, Hydraulic (Without Orifice) | Hydraulic pilot pressure signal at port X (px ≥ 10 bar); Internal control fluid | Internal shuttle valve takes control fluid from the higher-pressure working port A or B; applying ≥10 bar pilot pressure at port X shifts the motor rapidly to minimum displacement Vg min. |
| HZ6 | Two-Point Control, Hydraulic (With Orifice) | Hydraulic pilot pressure signal at port X (px ≥ 10 bar) with damping orifice | Features an integrated switching time orifice in the pilot line to decelerate stroking piston speed, providing soft, jerk-free gear ratio shifts and protecting gearbox teeth from torque spikes. |
| EZ1 / EZ6 | Two-Point Control, Electric (12V DC) | Electric on/off solenoid U = 12V DC (EZ6 includes switching time orifice) | Electric two-position control; de-energized = Vg max (fail-safe maximum torque for machine climbing or heavy winching); energized = Vg min (high-speed travel). |
| EZ2 / EZ7 | Two-Point Control, Electric (24V DC) | Electric on/off solenoid U = 24V DC (EZ7 includes switching time orifice) | Standard 24V mobile machinery electric shift control with molded DEUTSCH 2-pin connector; EZ7 incorporates a calibrated damping orifice for cushioned speed shifts. |
| Mounting Flange, Shaft and Port Specifications Across Sizes
| Mechanical Installation Interface (Plug-In Flange & Splined Drive Shaft) | ||
|---|---|---|
| Frame Size Model | Special Plug-In Mounting Flange Standards (Code F) | Drive Shaft Options (Involute Spline ANSI B92.1a 30°) |
| HYH10VE-28 | Special 2-hole plug-in flange: Pilot Ø135 -0.063 mm, pitch circle Ø160 mm, fixing holes 2 × Ø14 mm, width 184 mm | Code R: Splined shaft 7/8 in 13T 16/32DP (similar to ISO 3019-1, flat root side fit, standard torque) |
| HYH10VE-45 | Special 2-hole plug-in flange: Pilot Ø135 -0.063 mm, pitch circle Ø160 mm, fixing holes 2 × Ø14 mm, width 185 mm | Code R: Splined shaft 1 in 15T 16/32DP (high torque); Code W: Splined shaft 7/8 in 13T 16/32DP (reduced torque) |
| HYH10VE-63 | Special 2-hole plug-in flange: Pilot Ø160 -0.063 mm, pitch circle Ø200 mm, fixing holes 2 × Ø17 mm, outer Ø235 mm | Code R: Splined shaft 1 1/4 in 14T 12/24DP (high torque); Code W: Splined shaft 1 in 15T 16/32DP (reduced torque) |
| Fluid Port Configuration (Service, Drain, Control Pressure & Pilot Ports) | |||||
|---|---|---|---|---|---|
| Frame Size Model | Working Ports A, B (Flange ISO 6162-2) | Working Ports A, B (Threaded Option) | Case Drain Ports L, L1 | Control Ports G, G1 | Pilot Port X |
| HYH10VE-28 | Port plate 10/60: SAE J518 3/4 in (350 bar, M10×1.5 / 3/8-16 UNC) | Port plate 16: M27×2; Port plate 66: 1 1/16-12 UN | ISO 11926 3/4-16 UNF-2B (15 deep, 4 bar) | 7/16-20 UNF-2B (350 bar) | 7/16-20 UNF-2B (350 bar) |
| HYH10VE-45 | Port plate 10/60: SAE J518 3/4 in (lateral); 11/61: 3/4 in (rear) | Port plate 16: M27×2; Port plate 66: 1 1/16-12 UN | ISO 11926 7/8-14 UNF-2B (17 deep, 4 bar) | 7/16-20 UNF-2B (350 bar) | 7/16-20 UNF-2B (350 bar) |
| HYH10VE-63 | Port plate 10/60: SAE J518 3/4 in (350 bar, M10×1.5 / 3/8-16 UNC) | Port plate 16: M27×2; Port plate 66: 1 1/16-12 UN | ISO 11926 7/8-14 UNF-2B (17 deep, 4 bar) | 7/16-20 UNF-2B (350 bar) | 7/16-20 UNF-2B (350 bar) |
| Direct Interchangeability and OEM Replacement Matrix (Rexroth A10VE Series 52)
| Hengyuhang Series Model | Rexroth OEM Reference Model (A10VE Series 52) | Interchangeability Verification Status |
|---|---|---|
| HYH10VE-28 | A10VE 28 HZ / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-28 | A10VE 28 EZ2 / 52W-VFR10N000P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-45 | A10VE 45 HZ / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-45 | A10VE 45 EZ2 / 52W-VFR10N007P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement (With Flushing) |
| HYH10VE-45 | A10VE 45 EZ7 / 52W-VFR11N000P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement (Rear Ports) |
| HYH10VE-63 | A10VE 63 HZ / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-63 | A10VE 63 EZ2 / 52W-VFR10N007P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement (With Flushing) |
| HYH10VE-63 | A10VE 63 DG / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| Model Coding & Ordering Structure
| Position | Code Segment | Available Standard Options | Technical Definition & Feature Description |
|---|---|---|---|
| [01] | Axial Piston Unit | HYH10V | Swashplate variable displacement machine, nominal continuous pressure 280 bar (4100 psi), maximum peak pressure 350 bar (5100 psi) |
| [02] | Operating Mode | E | Code E: Hydraulic plug-in motor with recessed flange for planetary gearbox installation (open and closed circuits) |
| [03] | Frame Size (NG) | 28 / 45 / 63 | Nominal displacement size Vg max in cm³/rev (28.0 cm³, 45.0 cm³, 62.0 cm³) |
| [04] | Control Device | DG HZ / HZ6 EZ1 / EZ6 EZ2 / EZ7 | DG: Direct-operated two-point hydraulic control (external pilot pressure) HZ: Two-point hydraulic control (without orifice); HZ6: With switching time orifice EZ1/EZ6: Two-point electric control 12V DC (EZ6 with orifice) EZ2/EZ7: Two-point electric control 24V DC (EZ7 with orifice) |
| [05] | Series & Index | 52 | Series 5, Index 2 |
| [06] | Direction of Rotation | W | Code W: Bi-directional rotation (reversible flow direction across ports A and B) |
| [07] | Minimum Displacement | 1 / 2 | Setting range for steplessly adjustable minimum displacement Vg min: Range 1: 10~28 (Size 28); 12~25 (Size 45); 16~38 cm³ (Size 63) Range 2: 26~45 (Size 45); 40~62 cm³ (Size 63) |
| [08] | Sealing Material | V | Code V: Premium FKM (fluorocarbon rubber) standard (-25°C to +115°C) |
| [09] | Drive Shaft | R / W | Involute splined shaft similar to ISO 3019-1 (ANSI B92.1a 30°): Code R: High torque (7/8 in on 28; 1 in on 45; 1 1/4 in on 63) Code W: Reduced torque (7/8 in on 45; 1 in on 63) |
| [10] | Mounting Flange | F | Code F: Special 2-hole recessed plug-in flange for planetary gearbox pilot mounting |
| [11] | Working Line Ports | 10N00 / 11N00 60N00 / 61N00 16N00 / 66N00 | 10N00: SAE J518 3/4 in lateral, metric thread; 11N00: SAE 3/4 in at rear (Size 45) 60N00: SAE J518 3/4 in lateral, UNC thread; 61N00: SAE 3/4 in at rear (Size 45) 16N00: DIN 3852 M27×2 metric threaded; 66N00: ISO 11926 1 1/16-12 UN threaded |
| [12] | Valves | 0 / 7 | Code 0: Without valve Code 7: Integrated case flushing and boost-pressure valve (Sizes 45 and 63) |
| [13] | Speed Sensing | (None) / W / C / K / E | (None): Without sensor; Code W: Prepared for sensor Code C: Sensor DSA1 mounted; Code K: Sensor DSA2 mounted; Code E: Sensor DST mounted |
| [14] | Connector for Solenoid | (None) / P | (None): Without solenoid (hydraulic control); Code P: DEUTSCH-molded 2-pin connector DT04-2P |
| Technical Performance Matrix Across Available Sizes
| ■ Axial Piston Variable Plug-In Motor Series (HYH10VE — 280 bar Nominal / 350 bar Peak Benchmark) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model Number (Hengyuhang Series) | Displacement (cm³/rev) | Rotational Speed (rpm) | Max Inlet Flow @ nnom (L/min) | Max Torque @ 280 bar (Nm) | Starting Torque @ 0 rpm (Nm) | Shaft Stiffness c (Nm/rad) | Rotary Inertia JTW (kg·m²) | Angular Accel. α (rad/s²) | Unit Mass m approx. (kg) | |||
| Maximum Vg max | Minimum Vg min | Nominal nnom | Max Perm. nmax | Shaft R | Shaft W | |||||||
| HYH10VE-28 | 28.00 | 10.00 (adj. 10~28) | 4700 | 5400 | 131.6 | 125.0 | 92.0 | 26,000 | 19,800 | 0.0017 | 5500 | 14.0 |
| HYH10VE-45 | 45.00 | 12.00 (adj. 12~45) | 4000 | 4600 | 180.0 | 200.0 | 149.0 | 41,000 | 34,400 | 0.0033 | 4000 | 18.0 |
| HYH10VE-63 | 62.00 | 16.00 (adj. 16~62) | 3300 | 3900 | 205.0 | 276.0 | 205.0 | 69,400 | 54,000 | 0.0056 | 3300 | 26.0 |
| Hengyuhang Series Model | Rexroth OEM Reference Model (A10VE Series 52) | Interchangeability Verification Status |
|---|---|---|
| HYH10VE-28 | A10VE 28 HZ / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-28 | A10VE 28 EZ2 / 52W-VFR10N000P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-45 | A10VE 45 HZ / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-45 | A10VE 45 EZ2 / 52W-VFR10N007P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement (With Flushing) |
| HYH10VE-45 | A10VE 45 EZ7 / 52W-VFR11N000P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement (Rear Ports) |
| HYH10VE-63 | A10VE 63 HZ / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| HYH10VE-63 | A10VE 63 EZ2 / 52W-VFR10N007P | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement (With Flushing) |
| HYH10VE-63 | A10VE 63 DG / 52W-VFR10N000 | 100% Direct Physical, Dimensional & Hydraulic Drop-in Replacement |
| Position | Code Segment | Available Standard Options | Technical Definition & Feature Description |
|---|---|---|---|
| [01] | Axial Piston Unit | HYH10V | Swashplate variable displacement machine, nominal continuous pressure 280 bar (4100 psi), maximum peak pressure 350 bar (5100 psi) |
| [02] | Operating Mode | E | Code E: Hydraulic plug-in motor with recessed flange for planetary gearbox installation (open and closed circuits) |
| [03] | Frame Size (NG) | 28 / 45 / 63 | Nominal displacement size Vg max in cm³/rev (28.0 cm³, 45.0 cm³, 62.0 cm³) |
| [04] | Control Device | DG HZ / HZ6 EZ1 / EZ6 EZ2 / EZ7 | DG: Direct-operated two-point hydraulic control (external pilot pressure) HZ: Two-point hydraulic control (without orifice); HZ6: With switching time orifice EZ1/EZ6: Two-point electric control 12V DC (EZ6 with orifice) EZ2/EZ7: Two-point electric control 24V DC (EZ7 with orifice) |
| [05] | Series & Index | 52 | Series 5, Index 2 |
| [06] | Direction of Rotation | W | Code W: Bi-directional rotation (reversible flow direction across ports A and B) |
| [07] | Minimum Displacement | 1 / 2 | Setting range for steplessly adjustable minimum displacement Vg min: Range 1: 10~28 (Size 28); 12~25 (Size 45); 16~38 cm³ (Size 63) Range 2: 26~45 (Size 45); 40~62 cm³ (Size 63) |
| [08] | Sealing Material | V | Code V: Premium FKM (fluorocarbon rubber) standard (-25°C to +115°C) |
| [09] | Drive Shaft | R / W | Involute splined shaft similar to ISO 3019-1 (ANSI B92.1a 30°): Code R: High torque (7/8 in on 28; 1 in on 45; 1 1/4 in on 63) Code W: Reduced torque (7/8 in on 45; 1 in on 63) |
| [10] | Mounting Flange | F | Code F: Special 2-hole recessed plug-in flange for planetary gearbox pilot mounting |
| [11] | Working Line Ports | 10N00 / 11N00 60N00 / 61N00 16N00 / 66N00 | 10N00: SAE J518 3/4 in lateral, metric thread; 11N00: SAE 3/4 in at rear (Size 45) 60N00: SAE J518 3/4 in lateral, UNC thread; 61N00: SAE 3/4 in at rear (Size 45) 16N00: DIN 3852 M27×2 metric threaded; 66N00: ISO 11926 1 1/16-12 UN threaded |
| [12] | Valves | 0 / 7 | Code 0: Without valve Code 7: Integrated case flushing and boost-pressure valve (Sizes 45 and 63) |
| [13] | Speed Sensing | (None) / W / C / K / E | (None): Without sensor; Code W: Prepared for sensor Code C: Sensor DSA1 mounted; Code K: Sensor DSA2 mounted; Code E: Sensor DST mounted |
| [14] | Connector for Solenoid | (None) / P | (None): Without solenoid (hydraulic control); Code P: DEUTSCH-molded 2-pin connector DT04-2P |
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