Piston pump
HENGYUHANG Axial Piston Fixed Pump HYH17FO Series 10
Engineered with a heavy-duty 40° bent-axis axial tapered piston rotary group for open-circuit commercial vehicle hydraulic systems, the HENGYUHANG HYH17FO Series 10 fixed displacement pump delivers high power density, self-priming capability, low operational noise, and a robust nominal continuous operating pressure of 300 bar with maximum peak pressure reaching 350 bar (5,076 psi / 35 MPa).
| Applications
Specifically developed for direct power take-off (PTO) mounting on commercial vehicles, tipper dump trucks, truck-mounted knuckle-boom cranes, skip loaders, hooklifts, concrete mixers, and municipal refuse vehicles, this compact truck pump features standardized ISO 7653 4-hole mounting flanges, DIN ISO 14 splined shafts, field-reversible rotation, and an internal case-drain design requiring no external drain line, providing seamless 1:1 OEM drop-in replacement for Bosch Rexroth A17FO Series 10 pumps.
| Key Technical Specifications
Product Model: Hengyuhang Axial Piston Fixed Pump HYH17FO Series 10
Brand Replacement: Bosch Rexroth A17FO Series 10 (A17FO 23, 32, 45, 63, 80, 107) OEM or as requested.
Displacement: 23 to 107 cm³/rev across 6 standardized sizes (HYH17FO 23, HYH17FO 32, HYH17FO 45, HYH17FO 63, HYH17FO 80, HYH17FO 107)
Rotation Direction: Bi-directional reversible (easily changed between counter-clockwise and clockwise by swapping rear port fittings)
Speed Range: Nominal speeds 2,000 to 3,050 r/min (Maximum intermittent speeds up to 2,800 to 4,300 r/min)
Peak Pressure: Nominal working pressure 300 bar (4,350 psi); Maximum peak pressure 350 bar (5,076 psi / 35 MPa)
- Description
- Tecspecs
- Brand & Reference
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| Overview of HENGYUHANG HYH17FO Series 10
The HENGYUHANG HYH17FO Series 10 is an axial tapered piston fixed displacement pump featuring a large-angle 40 ° bent-axis rotary group engineered exclusively for commercial vehicle hydrostatic transmissions in open circuits. Available across six displacement sizes—HYH17FO 23, HYH17FO 32, HYH17FO 45, HYH17FO 63, HYH17FO 80, and HYH17FO 107 cm³/rev—flow delivery is directly proportional to engine PTO drive speed. The high 40 ° displacement angle produces exceptional power-to-weight ratios, tight outer dimensions, and optimal overall mechanical-hydraulic efficiency (>93%), making it the premier choice for weight-sensitive truck chassis installations.
Featuring a built-in internal case-drain circuit where the case chamber connects directly to the suction gallery, the HYH17FO eliminates the need for an external case drain line back to the hydraulic tank, drastically simplifying installation plumbing. The pump incorporates an ISO 7653-1985 4-hole mounting flange (Code K0), DIN ISO 14 splined drive shaft (Code E8), and an easily convertible rotation design where reversing drive rotation requires only swapping the screw-in pressure connection and suction fitting on the rear port plate. Every dimensional and hydraulic parameter delivers 100% direct mechanical interchangeability with Bosch Rexroth A17FO Series 10 pumps.
| Dimension of HENGYUHANG HYH17FO Series 10
| Interface Data Needed with the Drawing Across the 6 Frame Sizes
| Model / Size (HYH17FO) | Mounting Flange (ISO 7653-1985) | Drive Shaft (DIN ISO 14) | Service Port A (Outlet Pressure) | Suction Port S (Inlet Line) | Air Bleed Port R (Top Housing) | Waist Dimension / Clearance | Tightening Torque M D (Pressure Fitting) |
|---|---|---|---|---|---|---|---|
| HYH17FO 23 | 4-hole truck flange (pilot Ø 80 -0.03/-0.06 mm; 80 × 80 mm pattern, 4-Ø13 mm holes) | Splined E8: 8×32×35 (ISO 14), shaft length 55 mm, spline length 26 mm, retaining ring 35×1.5 DIN 471 | G 1/2 in (DIN ISO 228, 350 bar), thread depth 14 mm | G 3/4 in (DIN ISO 228, 2 bar), thread depth 16 mm | M10 × 1 (DIN 3852), thread depth 8 mm | Length 185 mm; Height 103 mm; Width 107 mm | 145 N·m (WAF 36 mm) |
| HYH17FO 32 | 4-hole truck flange (pilot Ø 80 -0.03/-0.06 mm; 80 × 80 mm pattern, 4-Ø13 mm holes) | Splined E8: 8×32×35 (ISO 14), shaft length 55 mm, spline length 26 mm, retaining ring 35×1.5 DIN 471 | G 1/2 in (DIN ISO 228, 350 bar), thread depth 14 mm | G 3/4 in (DIN ISO 228, 2 bar), thread depth 16 mm | M10 × 1 (DIN 3852), thread depth 8 mm | Length 185 mm; Height 103 mm; Width 107 mm | 145 N·m (WAF 36 mm) |
| HYH17FO 45 | 4-hole truck flange (pilot Ø 80 -0.03/-0.06 mm; 80 × 80 mm pattern, 4-Ø13 mm holes) | Splined E8: 8×32×35 (ISO 14), shaft length 55 mm, spline length 26 mm, retaining ring 35×1.5 DIN 471 | G 3/4 in (DIN ISO 228, 350 bar), thread depth 16 mm | G 1 in (DIN ISO 228, 2 bar), thread depth 18 mm | M10 × 1 (DIN 3852), thread depth 8 mm | Length 223 mm; Height 119 mm; Width 107 mm | 270 N·m (WAF 41 mm) |
| HYH17FO 63 | 4-hole truck flange (pilot Ø 80 -0.03/-0.06 mm; 80 × 80 mm pattern, 4-Ø13 mm holes) | Splined E8: 8×32×35 (ISO 14), shaft length 55 mm, spline length 26 mm, retaining ring 35×1.5 DIN 471 | G 3/4 in (DIN ISO 228, 350 bar), thread depth 16 mm | G 1 in (DIN ISO 228, 2 bar), thread depth 18 mm | M10 × 1 (DIN 3852), thread depth 8 mm | Length 232 mm; Height 126 mm; Width 107 mm | 270 N·m (WAF 41 mm) |
| HYH17FO 80 | 4-hole truck flange (pilot Ø 80 -0.03/-0.06 mm; 80 × 80 mm pattern, 4-Ø13 mm holes) | Splined E8: 8×32×35 (ISO 14), shaft length 55 mm, spline length 26 mm, retaining ring 35×1.5 DIN 471 | G 3/4 in (DIN ISO 228, 350 bar), thread depth 16 mm | G 1-1/4 in (DIN ISO 228, 2 bar), thread depth 20 mm | M10 × 1 (DIN 3852), thread depth 8 mm | Length 250 mm; Height 135 mm; Width 107 mm | 525 N·m (WAF 50 mm) |
| HYH17FO 107 | 4-hole truck flange (pilot Ø 80 -0.03/-0.06 mm; 80 × 80 mm pattern, 4-Ø13 mm holes) | Splined E8: 8×32×35 (ISO 14), shaft length 55 mm, spline length 26 mm, retaining ring 35×1.5 DIN 471 | G 3/4 in (DIN ISO 228, 350 bar), thread depth 16 mm | G 1-1/4 in (DIN ISO 228, 2 bar), thread depth 20 mm | M10 × 1 (DIN 3852), thread depth 8 mm | Length 250 mm; Height 135 mm; Width 107 mm | 525 N·m (WAF 50 mm) |
Note: Optional drive shaft C8 provides splined shaft E8 fitted with a direct-drive coupling companion flange for propshaft drive.
| Pump Installation Specifications HENGYUHANG HYH17FO Series 10
| Comprehensive Ordering Code Structure (Aligned with RE 91520 Series 10)
Code structure — reference: HYH17F−O−Size/10−Rotation−W−K0−Shaft−PortPlate−Version
| Position | Code Element | Description & Selection Options |
|---|---|---|
| 01 | Axial Piston Unit | HYH17F = Bent-axis design, fixed displacement, nominal pressure 300 bar, max pressure 350 bar, for commercial vehicles |
| 02 | Operating Mode | O = Pump, open circuit |
| 03 | Displacement Size (HYH17FO) | 023, 032, 045, 063, 080, 107 cm³/rev |
| 04 | Series | 10 = Series 1, Index 0 (Baureihe 10) |
| 05 | Port Thread Configuration | N = Metric port threads with profiled sealing ring according to DIN 3852 |
| 06 | Direction of Rotation | L = Counter-clockwise (standard factory delivery setting); R = Clockwise (easily converted on-site by swapping rear port fittings) |
| 07 | Sealing Material | W = FKM (fluor-caoutchouc) including dual shaft seal rings in FKM |
| 08 | Mounting Flange | K0 = Special truck mounting flange according to ISO 7653-1985 (pilot Ø 80 mm h8, 80 × 80 mm pattern) |
| 09 | Drive Shaft | E8 = Splined shaft similar to DIN ISO 14 (profile 8×32×35) for truck PTOs; C8 = Splined shaft E8 fitted with drive coupling companion flange |
| 10 | Port Plate Configuration | 1 = Threaded ports A and S positioned at rear face; 2 = Threaded ports A and S at rear, with suction stud factory-mounted in port S |
| 11 | Standard / Special Version | 0 = Standard production version; S = Special customized execution |
| Reading Your Replacement Code
| Target Bosch Rexroth Part Code | HENGYUHANG HYH Equivalent | Interchange Verification Notes |
|---|---|---|
| A17FO 023/10N-LWK0E810 | HYH17FO-023/10-N-L-W-K0-E8-1-0 | Direct 1:1 drop-in: HYH17FO 23, counter-clockwise, FKM seals, ISO 7653 flange, DIN ISO 14 shaft, rear ports |
| A17FO 032/10N-LWK0E810 | HYH17FO-032/10-N-L-W-K0-E8-1-0 | Direct 1:1 drop-in: HYH17FO 32, counter-clockwise, FKM seals, ISO 7653 flange, DIN ISO 14 shaft, rear ports |
| A17FO 045/10N-LWK0E810 | HYH17FO-045/10-N-L-W-K0-E8-1-0 | Direct 1:1 drop-in: HYH17FO 45, counter-clockwise, FKM seals, ISO 7653 flange, DIN ISO 14 shaft, rear ports |
| A17FO 063/10N-LWK0E810 | HYH17FO-063/10-N-L-W-K0-E8-1-0 | Direct 1:1 drop-in: HYH17FO 63, counter-clockwise, FKM seals, ISO 7653 flange, DIN ISO 14 shaft, rear ports |
| A17FO 080/10N-LWK0E810 | HYH17FO-080/10-N-L-W-K0-E8-1-0 | Direct 1:1 drop-in: HYH17FO 80, counter-clockwise, FKM seals, ISO 7653 flange, DIN ISO 14 shaft, rear ports |
| A17FO 107/10N-LWK0E810 | HYH17FO-107/10-N-L-W-K0-E8-1-0 | Direct 1:1 drop-in: HYH17FO 107, counter-clockwise, FKM seals, ISO 7653 flange, DIN ISO 14 shaft, rear ports |
| Techspecs of HENGYUHANG HYH17FO Series 10
| 4.1 Standard Unit Technical Data Across All 6 Models (from RE 91520)
| Parameter / Technical Specification | Symbol | Unit | HYH17FO 23 | HYH17FO 32 | HYH17FO 45 | HYH17FO 63 | HYH17FO 80 | HYH17FO 107 |
|---|---|---|---|---|---|---|---|---|
| Geometric Displacement per rev | Vg | cm³ | 22.9 | 32.0 | 45.6 | 63.0 | 80.4 | 106.7 |
| Maximum Nominal Speed (at Vg, p abs = 1.0 bar) | n nom | r/min | 3,050 | 2,750 | 2,650 | 2,200 | 2,150 | 2,000 |
| Maximum Limiting Speed (intermittent at boosted inlet) | n max | r/min | 4,300 | 3,900 | 3,800 | 3,200 | 3,100 | 2,800 |
| Max. Flow Delivery at n nom and Vg | qv | l/min | 70 | 88 | 121 | 139 | 173 | 213 |
| Drive Power at n nom and Δp = 300 bar | P | kW | 35 | 44 | 60 | 69 | 86 | 107 |
| Drive Torque at Vg and Δp = 300 bar | T | N·m | 109 | 153 | 218 | 301 | 384 | 509 |
| Nominal Continuous Pressure | p nom | bar | 300 | 300 | 300 | 300 | 300 | 300 |
| Maximum Peak Pressure | p max | bar | 350 | 350 | 350 | 350 | 350 | 350 |
| Rotary Group Torsional Stiffness | c | kN·m/rad | 2.56 | 3.12 | 4.18 | 6.25 | 8.73 | 11.20 |
| Rotary Group Moment of Inertia | J GR | kg·m² | 0.0012 | 0.0012 | 0.0030 | 0.0042 | 0.0072 | 0.0116 |
| Maximum Angular Acceleration | α | rad/s² | 6,500 | 6,500 | 14,600 | 7,500 | 6,000 | 4,500 |
| Internal Case Fluid Volume | V | l | 0.25 | 0.29 | 0.40 | 0.50 | 0.60 | 0.75 |
| Mass Moment about Mounting Centerline | T G | N·m | 4.7 | 4.7 | 8.6 | 9.9 | 15.3 | 20.0 |
| Pump Mass (Approximate Dry Weight) | m | kg | 5.9 | 5.9 | 8.4 | 9.3 | 12.3 | 15.0 |
| 4.2 Permissible Axial Forces on Drive Shaft (from RE 91520)
At standstill or non-pressurized operation: Fax max = 0 N.
Permissible axial force during pressurized operation: +Fax max = 24 to 71 N/bar operating pressure (increases bearing service life). Negative axial force −Fax max = 0 N/bar (must be avoided).
| 4.3 General Operating Conditions & Fluid Compatibility (Aligned with RE 91520)
| Parameter | Permissible Operating Limits | Optimal Recommended Target |
|---|---|---|
| Operating Hydraulic Fluid | Mineral oil HLP according to DIN 51524 (HF fluids compliant with RE 90221) | High-grade anti-wear hydraulic oil |
| Kinematic Viscosity (Continuous) | ν = 16 to 400 mm²/s (cSt) | ν opt = 16 to 36 mm²/s (cSt) |
| Cold Start Viscosity | ν max ≤ 1600 mm²/s (t ≤ 3 min, p ≤ 50 bar, n ≤ 1000 rpm) | System warm-up cycle recommended |
| Short-Term Viscosity Limit | ν min ≥ 7 mm²/s (t < 3 min, p < 0.3 × p nom) | Measured at fluid exit port |
| Operating Temperature Range | FKM seal equipped: -25 °C to +115 °C (-13 °F to +239 °F) | +30 °C to +80 °C (+86 °F to +176 °F) |
| Inlet Suction Pressure (Port S) | ps min ≥ 0.8 bar absolute; Max ps max = 2.0 bar absolute | Gravity flooded suction recommended |
| Case Drain Plumbing | No external case drain line required (case connects internally to port S) | Port R plugged during normal operation |
| Fluid Cleanliness Requirement | ISO 4406 Class 20/18/15 (NAS 1638 Class 9) | Class 19/17/14 for long component life |
Advantages
Large-Angle 40° Bent-Axis Design
Generates extraordinary power density and ultra-compact exterior dimensions, allowing installation into narrow truck chassis envelopes where conventional in-line pumps cannot fit.
No External Case Drain Line Required
Internal fluid passage connects the case bearing cavity directly to the suction gallery, completely eliminating the cost, clutter, and potential leakage of an external case drain line back to the tank.
Bi-Directional Field-Reversible Rotation
Pre-assembled for counter-clockwise rotation, the pump can be converted to clockwise rotation in minutes on-site simply by swapping the rear threaded pressure and suction port adapters.
Continuous 300 bar / Peak 350 bar Heavy-Duty Rating
Built to withstand severe cyclic pressure spikes common in tipper body slamming, crane dynamic hoisting, and high-tonnage compaction cycles.
Direct PTO Mounting to ISO 7653-1985 Standards
Standardized 4-hole flange (80 × 80 mm) and DIN ISO 14 (8×32×35) splined shaft bolt directly to auxiliary power take-offs across European, Asian, and American commercial vehicle transmissions.
1:1 Direct Drop-In Replacement for Rexroth A17FO
Dimensionally, hydraulically, and functionally identical to Bosch Rexroth A17FO Series 10 units, ensuring seamless interchangeability without mounting brackets or hydraulic rework.
Reference
Displacement & Port Configuration Matrix
Models Available: HYH17FO 23, HYH17FO 32, HYH17FO 45, HYH17FO 63, HYH17FO 80, HYH17FO 107 (displacement 22.9 to 106.7 cm³/rev).
Service Port Configurations:
HYH17FO 23 & 32: Service Port A: G 1/2 in; Suction Port S: G 3/4 in; Bleed Port R: M10 × 1.
HYH17FO 45 & 63: Service Port A: G 3/4 in; Suction Port S: G 1 in; Bleed Port R: M10 × 1.
HYH17FO 80 & 107: Service Port A: G 3/4 in; Suction Port S: G 1-1/4 in; Bleed Port R: M10 × 1.
Mounting Standard: ISO 7653-1985 4-hole commercial vehicle standard with DIN ISO 14 8×32×35 splined shaft.
Target Brand Interchangeability Matrix
The HENGYUHANG HYH17FO Series 10 delivers verified 1:1 drop-in replacement across the complete Bosch Rexroth A17FO Series 10 product line:
Bosch Rexroth A17FO 023/10 Series → HYH17FO-023/10-N-L-W-K0-E8-1-0 (and CW variant)
Bosch Rexroth A17FO 032/10 Series → HYH17FO-032/10-N-L-W-K0-E8-1-0 (and CW variant)
Bosch Rexroth A17FO 045/10 Series → HYH17FO-045/10-N-L-W-K0-E8-1-0 (and CW variant)
Bosch Rexroth A17FO 063/10 Series → HYH17FO-063/10-N-L-W-K0-E8-1-0 (and CW variant)
Bosch Rexroth A17FO 080/10 Series → HYH17FO-080/10-N-L-W-K0-E8-1-0 (and CW variant)
Bosch Rexroth A17FO 107/10 Series → HYH17FO-107/10-N-L-W-K0-E8-1-0 (and CW variant)
Brand Replacement
The HENGYUHANG HYH17FO Series 10 is engineered as a precision 1:1 drop-in replacement for Bosch Rexroth A17FO Series 10 axial piston truck pumps. Every unit is manufactured from high-grade spheroidal graphite ductile iron with CNC-ground spherical cylinder blocks and precision-honed tapered pistons, guaranteeing mechanical and volumetric efficiencies exceeding 93%. Utilizing standard ISO 7653 4-hole mounting patterns (80 × 80 mm centerlines, Ø80 mm pilot) and matching DIN ISO 14 splined shafts (8×32×35), HYH17FO pumps install directly onto commercial vehicle PTOs without intermediate adapter plates or driveline modifications. Fleet operators, body builders, and hydraulic repairers gain immediate access to equivalent OEM durability, rapid availability, and significant lifecycle cost savings.
Applications
Tipper & Dump Trucks: High-speed, high-pressure body tipping cylinders for semi-trailer tippers, 3-way dumpers, and mining haul trucks.
Truck-Mounted Knuckle-Boom Cranes: Smooth multi-function hydraulic power delivery for mobile loading cranes and forestry log loaders.
Skip Loaders & Hooklifts: Container handling, roll-off hoists, and heavy machinery transport vehicles.
Concrete Mixers & Volumetric Trucks: Auxiliary drum drive and chute positioning hydraulic systems.
Municipal & Environmental Vehicles: Refuse waste compactor trucks, automated side loaders, gully emptiers, and street sweepers.
Recovery & Tow Trucks: Heavy hydraulic recovery winches, tilt-tray slide beds, and under-lift wheel booms.
Package & Shipping
| Packaging Construction | Heavy-duty fumigation-free wooden export case with custom-molded high-density foam shock isolation |
|---|---|
| Corrosion Protection | Internal factory calibration oil preservation, external anti-corrosion barrier coating, and sealed moisture-proof VCI film wrapping |
| Port & Shaft Protection | Heavy-duty steel port blanking plugs and precision-machined plastic splined shaft protective sleeves |
| Package Dimensions | Approx. 340 × 240 × 220 mm (HYH17FO 23/32) up to 420 × 280 × 260 mm (HYH17FO 80/107) |
| Gross Weight | Approx. 7.5 kg (HYH17FO 23/32) up to 17.5 kg (HYH17FO 107) |
| Standard Lead Time | 3 – 5 business days for stocked inventory; 15 – 20 business days for volume fleet production batches |
| Global Shipping Options | Air express (DHL / FedEx / UPS / TNT) for emergency fleet downtime; Air cargo or Ocean LCL/FCL for commercial orders |
| Custom Documentation | Dynamic bench test certificates, material traceability reports, and customized private-label brand tags supported |
Why Choose Hengyuhang?
Direct Factory Precision Manufacturing & CNC Excellence: Manufactured in our state-of-the-art production facility equipped with high-precision 4-axis and 5-axis CNC machining centers, automated gear hobbing, and CNC gear tooth profile grinding (Ra < 0.2 μm) to ensure superior surface finish, ultra-tight internal clearances, and maximum volumetric efficiency.
100% Full-Cycle Multi-Parameter Factory Inspection: Every single pump undergoes computerized testing before packaging, verifying flow rate at rated speed, volumetric efficiency (>91–93%), mechanical efficiency, continuous and peak pressure hold, internal bypass, and noise spectrum. Zero untested units leave the factory.
Seamless 1:1 OEM Drop-In Interchangeability: Dimensionally matched to European, SAE, and DIN standards, providing 1:1 direct mechanical interchangeability across premier global brands (Bosch Rexroth, Parker, Danfoss, etc.) with zero mounting modifications required.
Flexible Engineering Customization & Rapid Prototyping: Supported by a senior fluid power engineering team, offering custom displacement combinations, specialized shaft tapers, splines, integrated priority or relief valves, and non-standard port orientations with rapid sample prototyping and low MOQ requirements.
Robust Supply Chain, Extensive Inventory & Fast Global Dispatch: Extensive raw material stock of high-grade ductile cast iron castings, alloy steel gear sets, and bearing assemblies enables rapid assembly and 48–72 hour dispatch for emergency breakdown replacements, supported by complete export logistics.
12-Month Comprehensive Warranty & Lifetime Technical Support: All pumps are backed by a comprehensive 12-month manufacturer warranty against defects in materials and workmanship, supplemented by 24/7 engineering consultation, CAD drawing verification, and lifecycle technical assistance.
HENGYUHANG Axial Piston Fixed Pump HYH17FO Series 10 (Bent-Axis Design Commercial Vehicle / Truck Pump, 22.90~106.70 cm³/rev) is a severe-duty, high-pressure bent-axis axial piston fixed displacement pump specifically engineered for direct mounting onto commercial vehicle transmission power take-offs (PTOs) and open-circuit hydrostatic auxiliary systems in modern transport trucks, municipal utility vehicles, and heavy construction haulers. Designed as a 100% direct dimensional, hydraulic, and functional drop-in custom replacement for the global industry benchmark Bosch Rexroth A17FO Series 10 (A17FO 023, A17FO 032, A17FO 045, A17FO 063, A17FO 080, A17FO 107), the HYH17FO Series 10 features an advanced 40° large swivel-angle rotary group with tapered spherical pistons, delivering maximum power density, ultra-compact installation dimensions, and an exceptional power-to-weight ratio. Engineered for continuous nominal working pressures (p_nom) up to 300 bar (4,350 psi / 30 MPa) and maximum peak surge pressures (p_max) reaching 350 bar (5,076 psi / 35 MPa), the pump provides full coverage across 6 standardized displacement frame sizes from 22.9 to 106.7 cm³/rev (1.397 to 6.511 in³/rev), generating continuous hydraulic flow rates up to 213 L/min. Built to international commercial vehicle standards with an ISO 7653-1985 4-hole rectangular truck mounting flange (centering pilot Ø80 mm with h8 tolerance, 80 × 80 mm square bolt centers) and a DIN ISO 14 8-tooth involute splined drive shaft (E8 8 × 32 × 35), the HYH17FO features an internal case drain routed directly into the suction chamber (eliminating the need for an external reservoir drain line) and simple bidirectional drive reversibility achieved by transposing the high-pressure threaded connection fitting, ensuring seamless OEM drop-in integration without modifying vehicle hydraulic piping or PTO brackets.
| Applications
The HYH17FO Series 10 bent-axis axial piston fixed pump is optimized for direct PTO mounting on commercial transport chassis, municipal maintenance trucks, and heavy mobile machinery requiring high working pressures, compact envelope dimensions, and continuous reliable delivery:
Commercial Tipper Trucks and Multi-Axle Dumpers: Direct-mounted to manual or automated transmission PTOs via standard ISO 7653 4-hole flanges; powers single-acting multi-stage telescopic hoist cylinders and high-tonnage tipping rams with fast cycle times and continuous 300 bar working pressure.
Truck-Mounted Knuckle-Boom Cranes and Timber Loaders: Supplies smooth, high-pressure hydraulic fluid to multi-section telescopic boom extensions, hydraulic outrigger stabilizers, continuous rotator slewing motors, and heavy log grapple attachments with zero pressure pulsation.
Hookloaders, Skip Loaders, and Roll-Off Container Trucks: Powers high-capacity sliding jib arm cylinders and container locking hooks; high angular acceleration capability (up to 14,600 rad/s²) guarantees instantaneous hydraulic response during rapid container pickup and dumping cycles.
Municipal Refuse Collection Vehicles and Waste Compactors: Withstands severe cyclic shock loads and high thermal stress during continuous packing operations; powers rear-tailgate ejector plates, automated bin lifters, and multi-stage compactor blades.
Heavy Vehicle Recovery Trucks, Rotators, and Transport Transporters: Feeds dual high-torque hydraulic winches, heavy under-lift wheel towing booms, and hydraulic stabilization outriggers during extreme roadside recovery operations.
Concrete Transit Mixers and Volumetric Batching Trucks: Driven directly via gearbox auxiliary PTOs; provides reliable, continuous fluid power to auxiliary hydraulic water pumps, discharge chute positioning cylinders, and emergency drum rotation systems.
| Key Specifications Overview
| Parameter | Engineering Specification (Series 10 Commercial Vehicle Standard) |
|---|---|
| Series Architecture | Axial Tapered Piston Rotary Group in Bent-Axis Design for Open Circuit Commercial Vehicles (Series 10) |
| Swivel Angle Technology | Large-angle 40° bent-axis machine geometry ensuring maximum power density and compact casing dimensions |
| Standard Displacement Frame Sizes (HYH17FO) | 6 Standard Nominal Sizes: HYH17FO 023, HYH17FO 032, HYH17FO 045, HYH17FO 063, HYH17FO 080, HYH17FO 107 cm³/rev |
| Nominal Continuous Pressure (p_nom) | 300 bar (4,350 psi / 30 MPa) absolute continuous working pressure at service line port A |
| Maximum Peak Operating Pressure (p_max) | 350 bar (5,076 psi / 35 MPa) absolute maximum pressure (single operating period max 5 s, cumulative 50 h) |
| Minimum High-Pressure Limit (p_A min) | 10 bar absolute (required on high-pressure side A to prevent damage to the rotary group) |
| Maximum Rate of Pressure Change (RA_max) | 9,000 bar/s maximum permissible rate of pressure rise and reduction across the entire operating range |
| Suction Port Pressure Range (p_S) | Minimum inlet pressure: 0.8 bar absolute (at nominal speed n_nom); Maximum inlet pressure: 2.0 bar absolute |
| Case Drain Architecture | Internal drain system; case chamber connects directly to the suction chamber (external drain line not required; port R plugged) |
| Drive Speed Range at Nominal Displacement | Nominal speed (n_nom @ p_abs = 1 bar): 2000 ~ 3050 rpm; Limiting speed (n_max with boosted inlet pressure): 2800 ~ 4300 rpm |
| Theoretical Flow Delivery @ 1500 rpm | 34.4 L/min (HYH17FO 023), 48.0 L/min (HYH17FO 032), 68.4 L/min (HYH17FO 045), 94.5 L/min (HYH17FO 063), 120.6 L/min (HYH17FO 080), 160.1 L/min (HYH17FO 107) |
| Drive Torque at 300 bar (Δp = 300 bar) | 109 Nm (HYH17FO 023), 153 Nm (HYH17FO 032), 218 Nm (HYH17FO 045), 301 Nm (HYH17FO 063), 384 Nm (HYH17FO 080), 509 Nm (HYH17FO 107) |
| Drive Power at n_nom and 300 bar | 35 kW (HYH17FO 023), 44 kW (HYH17FO 032), 60 kW (HYH17FO 045), 69 kW (HYH17FO 063), 86 kW (HYH17FO 080), 107 kW (HYH17FO 107) |
| Mounting Flange Standard | Special 4-hole flange ISO 7653-1985 for commercial trucks (centering pilot Ø80 mm -0.025/-0.060 mm, 80 × 80 mm square centers, 4 × Ø13 mm holes) |
| Drive Shaft Configuration | Splined shaft similar to DIN ISO 14 (Code E8: 8 × 32 × 35, length 55 mm from flange face, retaining ring groove 35 × 1.5 DIN 471) or with coupling flange C8 |
| Direction of Rotation & Reversibility | Counter-clockwise (L) standard pre-assembled on delivery; simple on-site reversibility to clockwise (R) by transposing the screw-in pressure connection |
| Port Connection Standard | Rear-ported BSPP female threads to DIN ISO 228 (Service line A: G 1/2 to G 1; Suction line S: G 3/4 to G 1 1/4; Air bleed R: M10 × 1 to M12 × 1.5) |
| Shaft Sealing Material | Dual heavy-duty FKM (fluorocarbon rubber / Viton) shaft seal rings standard; operating temperature range: -25°C to +115°C |
| Hydraulic Fluid Compatibility | Mineral-oil-based hydraulic fluids (HL / HLP to DIN 51524); optimal viscosity range: 16 ~ 36 mm²/s (permissible: 5 ~ 1600 mm²/s) |
| Fluid Cleanliness Requirement | ISO 4406 Class 20/18/15 minimum (Class 19/17/14 required for fluid temperatures from 90°C to 115°C) |
| Technical Performance Matrix Across Available Sizes
| Model Code | Displacement cm³/rev (in³/rev) | Operating Pressure (bar / psi) | Speed Range (rpm) | Flow Output (L/min) | Drive Power @ 300 bar (kW) | Torque @ 300 bar (Nm) | Pump Mass (kg, approx) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal (p_nom) | Peak (p_max) | Nominal (n_nom) | Limiting (n_max) | @ n_nom | @ 1500 rpm | @ n_nom | @ 1500 rpm | ||||
| HYH17FO 023 | 22.9 (1.397) | 300 / 4,350 | 350 / 5,076 | 3050 | 4300 | 70.0 | 34.4 | 35.0 | 17.2 | 109 | 5.9 |
| HYH17FO 032 | 32.0 (1.953) | 300 / 4,350 | 350 / 5,076 | 2750 | 3900 | 88.0 | 48.0 | 44.0 | 24.0 | 153 | 5.9 |
| HYH17FO 045 | 45.6 (2.783) | 300 / 4,350 | 350 / 5,076 | 2650 | 3800 | 121.0 | 68.4 | 60.0 | 34.2 | 218 | 8.4 |
| HYH17FO 063 | 63.0 (3.845) | 300 / 4,350 | 350 / 5,076 | 2200 | 3200 | 139.0 | 94.5 | 69.0 | 47.3 | 301 | 9.3 |
| HYH17FO 080 | 80.4 (4.906) | 300 / 4,350 | 350 / 5,076 | 2150 | 3100 | 173.0 | 120.6 | 86.0 | 60.3 | 384 | 12.3 |
| HYH17FO 107 | 106.7 (6.511) | 300 / 4,350 | 350 / 5,076 | 2000 | 2800 | 213.0 | 160.1 | 107.0 | 80.0 | 509 | 15.0 |
| Mounting Flange, Shaft and Port Specifications
| Model Size | Mounting Interface (ISO 7653) | Drive Shaft (DIN ISO 14) | Rear Hydraulic Port Connections (DIN ISO 228) |
|---|---|---|---|
| HYH17FO 023 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1/2 (depth 14 mm, 350 bar max); Suction Port S: G 3/4 (depth 16 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 032 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1/2 (depth 14 mm, 350 bar max); Suction Port S: G 3/4 (depth 16 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 045 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 3/4 (depth 16 mm, 350 bar max); Suction Port S: G 1 (depth 18 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 063 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 3/4 (depth 16 mm, 350 bar max); Suction Port S: G 1 (depth 18 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 080 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1 (depth 18 mm, 350 bar max); Suction Port S: G 1 1/4 (depth 20 mm, 2 bar max); Air Bleed R: M12 × 1.5 |
| HYH17FO 107 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1 (depth 18 mm, 350 bar max); Suction Port S: G 1 1/4 (depth 20 mm, 2 bar max); Air Bleed R: M12 × 1.5 |
| Direct Interchangeability and OEM Replacement Matrix (Rexroth A17FO Series 10)
| Hengyuhang Series | OEM Target Model | OEM Part Reference Code | Interchangeability and Drop-In Compliance |
|---|---|---|---|
| HYH17FO 023 | Bosch Rexroth A17FO 023 | A17FO 023 / 10NLWK0E81-0 | 100% direct mechanical and hydraulic drop-in replacement; identical ISO 7653 pilot Ø80 mm, DIN ISO 14 splined shaft E8, and rear G 1/2 service port. |
| HYH17FO 032 | Bosch Rexroth A17FO 032 | A17FO 032 / 10NLWK0E81-0 | Direct bolt-on replacement for medium-duty commercial tippers and hoists; identical 185 mm casing length and 300 bar continuous pressure. |
| HYH17FO 045 | Bosch Rexroth A17FO 045 | A17FO 045 / 10NLWK0E81-0 | Identical 40° bent-axis rotary group, 223 mm overall length, rear G 3/4 working port, and direct truck transmission PTO fitment. |
| HYH17FO 063 | Bosch Rexroth A17FO 063 | A17FO 063 / 10NLWK0E81-0 | Direct replacement for heavy waste compactors and knuckle-boom cranes; identical 301 Nm torque rating at 300 bar and 232 mm casing envelope. |
| HYH17FO 080 | Bosch Rexroth A17FO 080 | A17FO 080 / 10NLWK0E81-0 | Direct drop-in replacement for multi-axle heavy transport and roll-off tippers; G 1 pressure port, G 1 1/4 suction port, and 261 mm body length. |
| HYH17FO 107 | Bosch Rexroth A17FO 107 | A17FO 107 / 10NLWK0E81-0 | Full drop-in replacement for maximum-capacity 107 cm³/rev truck PTO hydraulic systems; identical 272 mm total length and 213 L/min delivery flow. |
| Technical Performance Matrix Across Available Sizes
| Model Code | Displacement cm³/rev (in³/rev) | Operating Pressure (bar / psi) | Speed Range (rpm) | Flow Output (L/min) | Drive Power @ 300 bar (kW) | Torque @ 300 bar (Nm) | Pump Mass (kg, approx) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal (p_nom) | Peak (p_max) | Nominal (n_nom) | Limiting (n_max) | @ n_nom | @ 1500 rpm | @ n_nom | @ 1500 rpm | ||||
| HYH17FO 023 | 22.9 (1.397) | 300 / 4,350 | 350 / 5,076 | 3050 | 4300 | 70.0 | 34.4 | 35.0 | 17.2 | 109 | 5.9 |
| HYH17FO 032 | 32.0 (1.953) | 300 / 4,350 | 350 / 5,076 | 2750 | 3900 | 88.0 | 48.0 | 44.0 | 24.0 | 153 | 5.9 |
| HYH17FO 045 | 45.6 (2.783) | 300 / 4,350 | 350 / 5,076 | 2650 | 3800 | 121.0 | 68.4 | 60.0 | 34.2 | 218 | 8.4 |
| HYH17FO 063 | 63.0 (3.845) | 300 / 4,350 | 350 / 5,076 | 2200 | 3200 | 139.0 | 94.5 | 69.0 | 47.3 | 301 | 9.3 |
| HYH17FO 080 | 80.4 (4.906) | 300 / 4,350 | 350 / 5,076 | 2150 | 3100 | 173.0 | 120.6 | 86.0 | 60.3 | 384 | 12.3 |
| HYH17FO 107 | 106.7 (6.511) | 300 / 4,350 | 350 / 5,076 | 2000 | 2800 | 213.0 | 160.1 | 107.0 | 80.0 | 509 | 15.0 |
| Model Size | Mounting Interface (ISO 7653) | Drive Shaft (DIN ISO 14) | Rear Hydraulic Port Connections (DIN ISO 228) |
|---|---|---|---|
| HYH17FO 023 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1/2 (depth 14 mm, 350 bar max); Suction Port S: G 3/4 (depth 16 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 032 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1/2 (depth 14 mm, 350 bar max); Suction Port S: G 3/4 (depth 16 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 045 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 3/4 (depth 16 mm, 350 bar max); Suction Port S: G 1 (depth 18 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 063 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 3/4 (depth 16 mm, 350 bar max); Suction Port S: G 1 (depth 18 mm, 2 bar max); Air Bleed R: M10 × 1 |
| HYH17FO 080 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1 (depth 18 mm, 350 bar max); Suction Port S: G 1 1/4 (depth 20 mm, 2 bar max); Air Bleed R: M12 × 1.5 |
| HYH17FO 107 | ISO 7653-1985 4-hole; Pilot Ø80 mm (-0.025/-0.060 mm), depth 9.5 mm; 80 × 80 mm square centers, 4 × Ø13 mm holes | Splined shaft E8 (8 × 32 × 35), length 55 mm, retaining ring groove 35 × 1.5, center bore M12 × 1.75 | Service Port A: G 1 (depth 18 mm, 350 bar max); Suction Port S: G 1 1/4 (depth 20 mm, 2 bar max); Air Bleed R: M12 × 1.5 |
| Hengyuhang Series | OEM Target Model | OEM Part Reference Code | Interchangeability and Drop-In Compliance |
|---|---|---|---|
| HYH17FO 023 | Bosch Rexroth A17FO 023 | A17FO 023 / 10NLWK0E81-0 | 100% direct mechanical and hydraulic drop-in replacement; identical ISO 7653 pilot Ø80 mm, DIN ISO 14 splined shaft E8, and rear G 1/2 service port. |
| HYH17FO 032 | Bosch Rexroth A17FO 032 | A17FO 032 / 10NLWK0E81-0 | Direct bolt-on replacement for medium-duty commercial tippers and hoists; identical 185 mm casing length and 300 bar continuous pressure. |
| HYH17FO 045 | Bosch Rexroth A17FO 045 | A17FO 045 / 10NLWK0E81-0 | Identical 40° bent-axis rotary group, 223 mm overall length, rear G 3/4 working port, and direct truck transmission PTO fitment. |
| HYH17FO 063 | Bosch Rexroth A17FO 063 | A17FO 063 / 10NLWK0E81-0 | Direct replacement for heavy waste compactors and knuckle-boom cranes; identical 301 Nm torque rating at 300 bar and 232 mm casing envelope. |
| HYH17FO 080 | Bosch Rexroth A17FO 080 | A17FO 080 / 10NLWK0E81-0 | Direct drop-in replacement for multi-axle heavy transport and roll-off tippers; G 1 pressure port, G 1 1/4 suction port, and 261 mm body length. |
| HYH17FO 107 | Bosch Rexroth A17FO 107 | A17FO 107 / 10NLWK0E81-0 | Full drop-in replacement for maximum-capacity 107 cm³/rev truck PTO hydraulic systems; identical 272 mm total length and 213 L/min delivery flow. |
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