Piston pump
HENGYUHANG Axial Piston Variable Pump HYH11VLO Series 1x
HENGYUHANG HYH11V(L)O Series 1x is a heavy-duty swashplate axial piston variable displacement pump engineered for demanding open-circuit hydrostatic drives, delivering continuous 350 bar nominal pressure (400 bar peak), high-speed charge pump options (HYH11VLO for sizes 130–260), full-torque through-drive compounding up to identical frame sizes, and seamless 1:1 drop-in interchangeability with Bosch Rexroth A11V(L)O Series 1x and Danfoss D1P pumps.
| Applications
Engineered for severe duty open-circuit hydraulic systems across mobile heavy machinery and industrial installations, including large hydraulic excavators, mobile and crawler cranes, concrete boom pumps, heavy mining dump trucks, oil and gas drilling rigs, rotary drilling machines, dredging vessels, and heavy metal forming presses requiring 350 bar continuous high-pressure capacity and high-flow multi-pump tandem compounding.
| Key Technical Specifications
Product Model: HYH11VO / HYH11VLO Series 1x (Sizes 40, 60, 75, 95, 130, 145, 190, 260)
Brand Replacement: Bosch Rexroth A11V(L)O Series 1x (Sizes 40–260) & Danfoss D1P Series (Sizes 65–260), OEM or as requested.
Displacement: 42.0 / 58.5 / 74.0 / 93.5 / 130.0 / 145.0 / 193.0 / 260.0 cm³/rev
Rotation Direction: Clockwise (R) or Counter-clockwise (L), viewed facing drive shaft
Speed Range: Standard pump (HYH11VO) n nom 2,000–3,000 rpm; with internal charge pump (HYH11VLO) n nom 2,300–2,500 rpm (n min = 500 rpm)
Peak Pressure: Nominal continuous pressure p nom = 350 bar (5,100 psi) / Maximum peak pressure p max = 400 bar (5,800 psi)
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| Overview of HENGYUHANG HYH11VO Series 1x Hydraulic Pumps
The HENGYUHANG HYH11VO Series 1x is an ultra-heavy-duty swashplate axial piston variable displacement pump engineered specifically for high-pressure open-circuit hydrostatic transmissions. Serving as a dedicated 1:1 functional, dimensional, and mechanical drop-in replacement for both Bosch Rexroth A11VO Series 1x (Series 10/11, standard atmospheric suction configuration without charge pump) and Danfoss D1P High Power Open Circuit Pumps (standard non-impeller models D1P 065 through 260), this series encompasses eight standardized frame sizes spanning displacements from 40 cm³/rev up to 260 cm³/rev.
Operating fluid flow is directly proportional to drive input speed and swashplate displacement angle, delivering smooth, stepless variation from full rated flow down to zero output. Designed around heavy-duty hydrostatic cradle bearings, optimized bi-metal cylinder block metallurgy, and precision-balanced tapered slipper pistons, the HYH11VO Series achieves extraordinary volumetric efficiency exceeding 94% under continuous 350 bar operating conditions. Equipped with a standard full-torque 100% through-drive configuration capable of mounting secondary auxiliary pumps (gear pumps or axial piston pumps up to identical displacement sizes), symmetrical dual case drain ports (T1 / T2), and a comprehensive selection of modular hydraulic and electronic control regulators (including constant power LR, load-sensing DRS, pressure cut-off DR, and electrohydraulic proportional controls), the HYH11VO delivers exceptional power density, robust reliability, and minimal operational downtime across the most rigorous mobile off-highway and industrial environments.
(Note: For high-speed applications where input drive speeds exceed standard suction ratings, please consult our companion HYH11VLO Series equipped with an internal centrifugal charge pump.)
| Dimension of HENGYUHANG HYH11VO Series 1x Hydraulic Pumps
| Mechanical Installation Interface Specifications
| Frame Size (HYH11VO) | Mounting Flange Standard (SAE J744 / ISO 3019-1) | Drive Shaft Options (DIN 5480 Spline / ANSI Spline) |
|---|---|---|
| HYH11VO40 | 2-Hole SAE 101-2 (B) Spigot Ø101.6 mm | Z: W35×2×16×9g; P: AS10×8×56 Keyed; S: 1 1/4 in 14T 12/24DP |
| HYH11VO60 | 2-Hole SAE 127-2 (C) Spigot Ø127.0 mm | Z: W35×2×16×9g; P: AS10×8×56 Keyed; S: 1 1/4 in 14T 12/24DP |
| HYH11VO75 | 4-Hole SAE 152-4 (D) Spigot Ø152.4 mm | Z: W40×2×18×9g; P: AS12×8×80 Keyed; S: 1 1/2 in 17T 12/24DP |
| HYH11VO95 | 4-Hole SAE 152-4 (D) Spigot Ø152.4 mm (Opt. SAE J617 No. 3) | Z: W45×2×21×9g; P: AS14×9×80 Keyed; S: 1 3/4 in 13T 8/16DP |
| HYH11VO130 | 4-Hole SAE 152-4 (D) Spigot Ø152.4 mm (Opt. SAE J617 No. 3) | Z: W50×2×24×9g; P: AS14×9×80 Keyed; S: 1 3/4 in 13T 8/16DP |
| HYH11VO145 | 4-Hole SAE 152-4 (D) Spigot Ø152.4 mm (Opt. SAE J617 No. 3) | Z: W50×2×24×9g; P: AS14×9×80 Keyed; S: 1 3/4 in 13T 8/16DP |
| HYH11VO190 | 4-Hole SAE 165-4 (E) Spigot Ø165.1 mm (Opt. SAE J617 No. 3) | Z: W50×2×24×9g; P: AS16×10×100 Keyed; S: 1 3/4 in 13T 8/16DP |
| HYH11VO260 | 4-Hole SAE 165-4 (E) Spigot Ø165.1 mm (Opt. SAE 152-4) | Z: W60×2×28×9g; P: AS18×11×100 Keyed; S: 2 1/4 in 17T 8/16DP |
| Frame Size (HYH11VO) | Working Pressure Port A (ISO 6162-2 / SAE 6000 psi) | Suction Port S (ISO 6162-1 / SAE 3000 psi) | Case Drain Ports T1 / T2 (DIN 3852-1 / ISO 11926) | Air Bleed Port R (DIN 3852-1) | Control Gauge Port M1 (DIN 3852-1) |
|---|---|---|---|---|---|
| HYH11VO40 | 3/4 in (M10×1.5, 16 deep; 400 bar) | 1 1/2 in (M12×1.75, 17 deep; 10 bar) | M22×1.5 (14 deep; max 10 bar) | M22×1.5 (14 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO60 | 1 in (M12×1.75, 17 deep; 400 bar) | 2 in (M12×1.75, 20 deep; 10 bar) | M22×1.5 (14 deep; max 10 bar) | M22×1.5 (14 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO75 | 1 in (M12×1.75, 17 deep; 400 bar) | 2 in (M12×1.75, 17 deep; 10 bar) | M22×1.5 (14 deep; max 10 bar) | M22×1.5 (14 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO95 | 1 1/4 in (M14×2, 19 deep; 400 bar) | 2 1/2 in (M12×1.75, 17 deep; 10 bar) | M26×1.5 (16 deep; max 10 bar) | M26×1.5 (16 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO130 | 1 1/4 in (M14×2, 19 deep; 400 bar) | 2 1/2 in (M12×1.75, 17 deep; 10 bar) | M26×1.5 (16 deep; max 10 bar) | M26×1.5 (16 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO145 | 1 1/4 in (M14×2, 19 deep; 400 bar) | 3 in (M16×2, 24 deep; 10 bar) | M26×1.5 (16 deep; max 10 bar) | M26×1.5 (16 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO190 | 1 1/2 in (M16×2, 21 deep; 400 bar) | 3 1/2 in (M16×2, 24 deep; 10 bar) | M33×2 (16 deep; max 10 bar) | M33×2 (16 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| HYH11VO260 | 1 1/2 in (M16×2, 21 deep; 400 bar) | 4 in (M16×2, 24 deep; 10 bar) | M33×2 (19 deep; max 10 bar) | M33×2 (16 deep; 10 bar) | M12×1.5 (12 deep; 400 bar) |
| Notes on Porting & Danfoss D1P Cross Matching
Working Port Thread Execution: Code 12 provides metric DIN 3852 sealing threads with metric DIN 13 flange bolt threads; Code 07 provides UNF ISO 11926 O-ring threads (standard for North American & Danfoss D1P drop-in replacements).
Dual Case Drains: T1 and T2 provide flexible vertical or horizontal piping orientations.
Danfoss D1P Standard Frame Sizes: 65, 130, 145, 160, 193, and 260 share exact SAE flange, shaft, and port patterns with HYH11VO sizes 60, 130, 145, 190, and 260.
| Pump Installation Specifications
| Complete Ordering Code Structure
HYH11V−O−[Size]−[Control]/1[Index] [Rotation]−[Seal][Shaft][Flange][Port Code][Through Drive]−[Sensor][Connector]
| Position | Code Segment | Available Designations & Options | Technical Description & Functional Purpose |
|---|---|---|---|
| 01 | Axial Piston Unit | HYH11V / A11V | Swashplate design, variable displacement, nominal pressure 350 bar, peak 400 bar |
| 02 | Operating Mode | O | Pump in open circuit, standard atmospheric suction without internal charge pump |
| 03 | Geometric Frame Size | 40, 60, 75, 95, 130, 145, 190, 260 | Nominal geometric displacement rating in cm³/rev |
| 04 | Control Devices | LR / LR.C / LR3 L.D.. / L..G. / L...S L...S2 / L...S5 L...H1 / L...H2 / L...U2 DR / DRS / DRG / DRL HD1 / HD2 / HD1D / HD1G EP1 / EP2 / EP1D / EP2D | LR / LR.C / LR3: Power controller (fixed setting, with cross-sensing summation, or high-pressure related) L.D.. / L..G. / L...S: Power controller with pressure cut-off (D), remote control (G), or load-sensing (S) L...S2 / L...S5: Power controller with electric proportional override (24V S2) or hydraulic override (S5) L...H1 / L...H2 / L...U2: Power controller with hydraulic stroke limiter (H1 neg / H2 pos, Δp=25 bar) or electric stroke limiter (U2 24V) DR / DRS / DRG / DRL: Pressure controller (standard DR, load-sensing DRS, remote DRG, parallel operation DRL) HD1 / HD2 / HD1D / HD1G: Hydraulic pilot-pressure control (Δp=10 bar HD1 / Δp=25 bar HD2, with pressure cut-off) EP1 / EP2 / EP1D / EP2D: Electric proportional control with proportional solenoid (12V EP1 / 24V EP2, with pressure cut-off) |
| 05 | Series | 1 | Series 1 |
| 06 | Design Index | 0 / 1 | Index 0 (Sizes 40 to 130); Index 1 (Sizes 145 to 260) |
| 07 | Direction of Rotation | R, L | Clockwise (R) or Counter-clockwise (L), viewed facing drive shaft |
| 08 | Sealing Material | N, V | N: NBR nitrile rubber with FKM shaft seal ring; V: Full FKM fluorocarbon rubber seals |
| 09 | Drive Shaft Type | Z, P, S, T | Z: DIN 5480 splined shaft; P: DIN 6885 parallel keyed shaft; S: ANSI B92.1a splined shaft; T: ANSI splined shaft reinforced for tandem pumps |
| 10 | Mounting Flange | C, D, G | C: SAE J744 2-hole (Sizes 40/60); D: SAE J744 4-hole (Sizes 75–260); G: SAE J617 No. 3 engine flywheel mount (Sizes 95–190) |
| 11 | Working Line Ports | 12, 07 | 12: Lateral opposite SAE flange ports with metric DIN 13 threads; 07: Lateral ports with UNF ISO 11926 O-ring threads (Danfoss D1P compatible) |
| 12 | Through-Drive Flange | N00, K01 to K84 | N00: None; K01/K52: SAE A; K02/K04: SAE B; K07/K24: SAE C; K17: SAE D; K72: SAE E; K79 to K84: DIN 5480 spline hubs |
| 13 | Swivel Angle Indicator | Blank / V / R / H | Blank: None; V: Optical mechanical indicator; R: Electric sensor; H: BODAS Hall-effect ratiometric angle sensor (PAL, 5V DC) |
| 14 | Connector for Solenoid | Blank / P | Blank: Purely hydraulic control; P: Molded DEUTSCH 2-pin connector (DT04-2P) without suppressor diode |
| Reading Your Replacement Code
| Rexroth / Danfoss OEM Code | HENGYUHANG Drop-In Code | Displacement | Control Mechanism | Mounting & Drive Shaft | Porting & Through Drive |
|---|---|---|---|---|---|
| A11VO40LRDS/10R-NZC12K01 | HYH11VO40LRDS/10R-NZC12K01 | 42.0 cm³/rev | Power + LS + Cut-off (LRDS) | SAE B 2-bolt, DIN 5480 W35 spline | Metric side ports, SAE A through drive |
| A11VO95LRDS/10R-NZD12K02 | HYH11VO95LRDS/10R-NZD12K02 | 93.5 cm³/rev | Power + LS + Cut-off (LRDS) | SAE D 4-bolt, DIN 5480 W45 spline | Metric side ports, SAE B through drive |
| A11VO130LRDH1/10R-NSD12K04 | HYH11VO130LRDH1/10R-NSD12K04 | 130.0 cm³/rev | Power + Cut-off + Stroke Limiter | SAE D 4-bolt, ANSI 1 3/4" 13T spline | Metric side ports, SAE B through drive (15T) |
| A11VO190EP2D/11R-NZD12K17-P | HYH11VO190EP2D/11R-NZD12K17-P | 193.0 cm³/rev | Electric Proportional 24V + Cut-off | SAE E 4-bolt, DIN 5480 W50 spline | Metric side ports, SAE D through drive, DEUTSCH |
| D1P-130-R-A-TPSN-... (Danfoss) | HYH11VO130LRDS/10R-VSD07K07 | 130.0 cm³/rev | Power + Pressure + LS (TPSN ≡ LRDS) | SAE D 4-bolt, ANSI 1 3/4" 13T spline | UNF O-ring ports, SAE C through drive |
| D1P-260-R-A-TPH1-... (Danfoss) | HYH11VO260LRDH1/11R-VSD07K17 | 260.0 cm³/rev | Power + Hyd Displacement (TPH1 ≡ LRDH1) | SAE E 4-bolt, ANSI 2 1/4" 17T spline | UNF O-ring ports, SAE D through drive |
Technical Specifications of HENGYUHANG HYH11V(L)O Series (Sizes 40–260)
4.1 Frame Size Performance Matrix (Data at pₐᵦₛ=1.0 bar at port S, mineral oil ρ=0.88 kg/L)
| Performance Parameter | Unit | HYH11VO40 | HYH11VO60 | HYH11VO75 | HYH11VO95 | HYH11V(L)O130 | HYH11V(L)O145 | HYH11V(L)O190 | HYH11V(L)O260 |
|---|---|---|---|---|---|---|---|---|---|
| Max Geometric Displacement (Vgₘₐₓ) | cm³/rev | 42.0 | 58.5 | 74.0 | 93.5 | 130.0 | 145.0 | 193.0 | 260.0 |
| Max Speed without Charge Pump (nₙₒₘ) | rpm | 3,000 | 2,700 | 2,550 | 2,350 | 2,100 | 2,200 | 2,100 | 2,000 |
| Max Speed with Charge Pump (HYH11VLO / Impeller) | rpm | — | — | — | — | 2,500 | 2,500 | 2,500 | 2,300 |
| Limiting Speed at Increased Inlet / Reduced Swivel | rpm | 3,500 | 3,250 | 3,000 | 2,780 | 2,500 | 2,500 | 2,100 | 2,300 |
| Minimum Operating Speed (nₘᵢₙ) | rpm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Continuous Flow Rate (qV at nₙₒₘ, Standard) | L/min | 126 | 158 | 189 | 220 | 273 | 319 | 405 | 468 |
| Continuous Flow Rate (qV with Charge Pump) | L/min | — | — | — | — | 325 | 363 | 483 | 598 |
| Continuous Drive Power (P at Δp=350 bar, Standard) | kW | 74 | 92 | 110 | 128 | 159 | 186 | 236 | 273 |
| Continuous Drive Power (P with Charge Pump) | kW | — | — | — | — | 190 | 211 | 281 | 349 |
| Continuous Drive Torque (M at Δp=350 bar) | Nm | 234 | 326 | 412 | 521 | 724 | 808 | 1,075 | 1,448 |
| Shaft Torsional Stiffness Z (c) | kNm/rad | 88.9 | 102.4 | 145.8 | 199.6 | 302.5 | 302.5 | 346.2 | 686.5 |
| Shaft Torsional Stiffness S (c) | kNm/rad | 58.3 | 86.3 | 101.9 | 173.7 | 236.9 | 236.9 | 259.8 | 352.0 |
| Rotary Group Moment of Inertia (J_TW) | kg·m² | 0.00480 | 0.00820 | 0.01150 | 0.01730 | 0.03180 (0.03370 LO) | 0.03410 (0.03600 LO) | 0.05500 (0.05770 LO) | 0.08780 (0.08950 LO) |
| Max Permissible Angular Acceleration (α) | rad/s² | 22,000 | 17,500 | 15,000 | 13,000 | 10,500 | 9,000 | 6,800 | 4,800 |
| Housing Case Fluid Volume | L | 1.10 | 1.35 | 1.85 | 2.10 | 2.90 | 2.90 | 3.80 | 4.60 |
| Dry Weight without Through Drive (Standard) | kg | 32 | 40 | 45 | 53 | 66 | 67 | 95 | 125 |
| Dry Weight with Charge Pump (HYH11VLO / Impeller) | kg | — | — | — | — | 72 | 73 | 104 | 138 |
4.2 Operating Pressure Boundaries
| Pressure Characteristic | Permissible Value | Operational Definition & Safety Limits |
|---|---|---|
| Nominal Operating Pressure (pₙₒₘ) | 350 bar (5,100 psi) | Maximum continuous design fatigue pressure according to ISO/DIN standards |
| Maximum Peak Pressure (pₘₐₓ) | 400 bar (5,800 psi) | Maximum transient peak within single operating period (t≤2.5 ms, total accumulated ≤300 h) |
| Minimum Pressure on Working Port A | ≥10 bar (145 psi) absolute | Minimum high-pressure side rating required to prevent rotary group unseating |
| Rate of Pressure Change (RAₘₐₓ) | 16,000 bar/s (232,000 psi/s) | Maximum permissible speed of pressure rise and drop across continuous duty |
| Suction Port Pressure (pₛ without Charge Pump) | ≥0.8 bar (11.6 psi) absolute | Minimum inlet suction pressure; maximum permissible p_S max=30 bar (435 psi) absolute |
| Suction Port Pressure (pₛ with Charge Pump / LO) | ≥0.6 bar (8.7 psi) absolute | Centrifugal impeller boosts suction flow; maximum permissible p_S max=2.0 bar (29 psi) absolute |
| Case Drain Permissible Pressure (p_T, p_T1, p_T2) | ≤2.0 bar (29 psi) absolute | Continuous case pressure; peak transient at cold start ≤10 bar (145 psi) for t≤3 min |
| Control Pilot Pressure Port X | ≤400 bar (5,800 psi) | Maximum pilot line input 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 |
| Minimum Viscosity (νₘᵢₙ) | 7 to 10 mm²/s | Short-term limit (t≤3 min) at p≤0.3⋅pₙₒₘ, T_max=+85 ∘C (NBR) / +110 ∘C (FKM) |
| Maximum Viscosity at Cold Start (νₘₐₓ) | 1,600 mm²/s | Permissible at cold start (p≤50 bar, n≤0.5⋅nₙₒₘ, ϑ_St≥−25 ∘C, warm-up phase ≤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 (NBR rated to +85 ∘C) |
| Fluid Cleanliness Class | ISO 4406 Class 20/18/15 | At elevated temperatures (>90 ∘C), maintain Class 19/17/14 minimum |
| Environmentally Acceptable Fluids | HEES, HEPG, HETG, HFDU | Synthetic esters and polyglycols; observe specific viscosity and seal compatibility guidelines |
Product Advantages
True 350 Bar Continuous / 400 Bar Peak Pressure Capability
Heavy-duty swashplate and bi-metal cylinder block metallurgy provide industry-leading structural fatigue strength under severe high-pressure shock loads.
Integrated Centrifugal Charge Pump Option (A11VLO / D1P Impeller)
Frame sizes 130–260 cm³/rev feature an optional internal suction impeller that elevates rated operating speed up to 2,500 rpm, eliminating cavitation and enabling high-efficiency diesel direct drive.
Full 100% Through-Drive Compounding Capacity
Engineered with ultra-rigid drive shafts and rear structural flanges capable of transmitting 100% of maximum input torque to secondary tandem pumps up to identical frame sizes.
Dual OEM Drop-In Compatibility (Rexroth & Danfoss)
Precision-machined SAE mounting flanges, ANSI/DIN shaft splines, and port patterns ensure instant 1:1 replacement for both Bosch Rexroth A11V(L)O Series 1x and Danfoss D1P open-circuit pumps.
Exhaustive Modular Control Portfolio
Accommodates multi-function power management including hyperbolic power limiting (LR), cross-sensing power summation (LRC), load-sensing flow regulation (DRS), and digital electrohydraulic pilot control (EP/LE).
Compact High Power-to-Weight Ratio
Advanced finite element modeling of the pump casing minimizes physical envelope and dry mass while maximizing structural torsional rigidity.
Interchangeability & Cross Reference
6.1 Direct Replacement Matrix: Bosch Rexroth A11V(L)O & Danfoss D1P to HENGYUHANG HYH11V(L)O
| OEM Brand | OEM Model Series | Displacement Band | Mounting Standard | Working Ports | 1:1 Replacement |
|---|---|---|---|---|---|
| Bosch Rexroth | A11VO40 | 42.0 cm³/rev | SAE J744 101-2 (B) 2-Hole | SAE J518 3/4" Port A / 1 1/2" Port S (6000 psi) | HYH11VO40 |
| Bosch Rexroth | A11VO60 | 58.5 cm³/rev | SAE J744 127-2 (C) 2-Hole | SAE J518 1" Port A / 2" Port S (6000 psi) | HYH11VO60 |
| Danfoss | D1P-065 | 65.0 cm³/rev | SAE J744 127-2 (C) 2-Hole | SAE J518 1" Port A / 2" Port S (UNF / Metric) | HYH11VO60 (Custom D1P trim) |
| Bosch Rexroth | A11VO75 | 74.0 cm³/rev | SAE J744 152-4 (D) 4-Hole | SAE J518 1" Port A / 2" Port S (6000 psi) | HYH11VO75 |
| Bosch Rexroth | A11VO95 | 93.5 cm³/rev | SAE J744 152-4 (D) / SAE 3 | SAE J518 1 1/4" Port A / 2 1/2" Port S | HYH11VO95 |
| Bosch Rexroth | A11V(L)O130 | 130.0 cm³/rev | SAE J744 152-4 (D) / SAE 3 | SAE J518 1 1/4" Port A / 2 1/2" or 3" Port S | HYH11V(L)O130 |
| Danfoss | D1P-130 | 130.0 cm³/rev | SAE J744 152-4 (D) 4-Hole | SAE J518 1 1/4" Port A / 2 1/2" Port S | HYH11V(L)O130 (D1P trim) |
| Bosch Rexroth | A11V(L)O145 | 145.0 cm³/rev | SAE J744 152-4 (D) / SAE 3 | SAE J518 1 1/4" Port A / 3" Port S | HYH11V(L)O145 |
| Danfoss | D1P-145 / D1P-160 | 145.0 / 160.0 cm³/rev | SAE J744 152-4 (D) 4-Hole | SAE J518 1 1/4" Port A / 3" Port S | HYH11V(L)O145 / HYH11VO160 |
| Bosch Rexroth | A11V(L)O190 | 193.0 cm³/rev | SAE J744 165-4 (E) / SAE 3 | SAE J518 1 1/2" Port A / 3 1/2" Port S | HYH11V(L)O190 |
| Danfoss | D1P-193 | 193.0 cm³/rev | SAE J744 165-4 (E) 4-Hole | SAE J518 1 1/2" Port A / 3 1/2" Port S | HYH11V(L)O190 (D1P trim) |
| Bosch Rexroth | A11V(L)O260 | 260.0 cm³/rev | SAE J744 165-4 (E) 4-Hole | SAE J518 1 1/2" Port A / 4" Port S | HYH11V(L)O260 |
| Danfoss | D1P-260 | 260.0 cm³/rev | SAE J744 165-4 (E) 4-Hole | SAE J518 1 1/2" Port A / 4" Port S | HYH11V(L)O260 (D1P trim) |
6.2 Modular Controller Functionality Mapping
| Primary Control Function | Rexroth A11VLO Code | Danfoss D1P Code | Functional Equivalent | Operational Characteristic |
|---|---|---|---|---|
| Constant Pressure Limiter | DR / DRG | NPNN / NPNR | HYH-DR / HYH-DRG | Destrokes pump at cut-off threshold; remote pilot relief via external port |
| Load-Sensing Flow Control | DRS / DRSC | NPSN | HYH-DRS | Regulates pump displacement to maintain constant differential across LS orifice |
| Hyperbolic Power Limiter | LR / LR.C | TPSN (with LS) | HYH-LR / HYH-LRC | Maintains constant input torque/power across varying pressure levels; optional cross-sensing |
| Power + Cut-off + Stroke Limiter | LRDH1 / LRDH2 | TPH1 | HYH-LRDH1 / HYH-LRDH2 | Combines power regulation, pressure cut-off, and hydraulic minimum/maximum displacement limiting |
| Electrohydraulic Proportional | EP1 / EP2 / LE2 | TPE2 / NPE2 / NNES | HYH-EP2 / HYH-LE2 | Proportional solenoid swashplate angle regulation with integrated electronics (12V / 24V DC) |
Brand Replacement
Bosch Rexroth: Primary 1:1 direct interchangeability for A11VO and A11VLO Series 10/11 open-circuit axial piston pumps.
Danfoss: Direct physical and functional interchangeability for D1P High Power Open Circuit Pumps, sizes 65 to 260.
Kawasaki (K3V / K5V Series) and Parker Hannifin (P2 / P3 Series) customized retrofits engineered upon request.
Applications
Heavy Mining & Earthmoving Excavators (30T–120T): Main hydraulic power source for boom, stick, bucket, and dual-track travel circuits.
Large Mobile & Lattice Boom Crawler Cranes: High-pressure power delivery for primary hoisting winches, boom derricking, and continuous slewing.
Heavy Concrete Boom Pumps: High-flow delivery to primary drive cylinders and multi-section placing boom articulation.
Rotary Drilling Rigs & Piling Machinery: Continuous heavy-duty drive for power swivel rotary heads, crowd winches, and auxiliary winches.
Marine & Offshore Deck Machinery: Anchor handling winches, offshore pedestal cranes, and subsea trenching power packs.
Industrial Scrap Balers & Metal Extrusion Presses: High-pressure central hydraulic power units requiring continuous 350 bar cycling and multi-pump through-drive compounding.
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 HYH11V(L)O pump undergoes automated test-bench trials verifying volumetric efficiency (>94%), continuous and peak pressure hold at 350/400 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 A11V(L)O Series 1x and Danfoss D1P 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 HYH11V(L)O Series 1x (Variable Swashplate Open-Circuit Hydraulic Pump, 40.00~260.00 cm³/rev) is a high-pressure, heavy-duty variable-displacement axial piston pump designed in swashplate rotary group architecture for demanding open-circuit hydrostatic drives in heavy mobile equipment, high-tonnage mining machinery, drilling rigs, and industrial power units. Manufactured by Quanzhou Hengyuhang Power Technology Co., Ltd. as an engineered, direct-fit replacement line designed to match the benchmark performance, mounting dimensions, pressure tiers, and control characteristics of the Rexroth A11V(L)O Series 1x (RE 92500) and custom-engineered as a direct functional alternative to the Danfoss D1P High Power Open Circuit Pump Series (65~260 cm³), the HYH11V(L)O Series 1x provides unmatched power density, robust mechanical integrity, and versatile hydraulic adaptability. Fluid delivery flow is directly proportional to drive speed and swashplate displacement angle, offering smooth, stepless variable modulation from zero to maximum flow. Operating at a high nominal continuous working pressure of 350 bar (5100 psi / 35 MPa) and a maximum peak operating pressure of 400 bar (5800 psi / 40 MPa) across 8 displacement frame sizes—40, 60, 75, 95, 130, 145, 190, and 260 cm³/rev—the series is available in two distinct operating configurations: the standard naturally aspirated pump HYH11VO (sizes 40 to 260 cm³) and the boosted version HYH11VLO equipped with an integrated charge pump / centrifugal impeller (sizes 130, 145, 190, and 260 cm³). The integrated charge pump enables significantly higher rotational drive speeds (up to 2500 rpm on sizes 130/145/190 and 2300 rpm on size 260), prevents suction cavitation under extreme operating velocities, and allows cold-start operation at low inlet pressures. Featuring heavy-duty tapered roller swashplate bearings, full-torque rear through-drive capability for mounting secondary pumps up to 100% capacity, and a comprehensive portfolio of controls—including hyperbolic power controllers (LR/LR.C/LE2), load-sensing flow controllers (DRS/L...S), hydraulic proportional controls (HD2/HD2D), and proportional electrical stroke controllers (EP2/EP2D, EC4/EB4)—the HYH11V(L)O Series 1x represents the definitive high-power open-circuit solution.
| Applications
The HYH11V(L)O Series 1x variable swashplate pump is engineered specifically for heavy-duty, high-power open-circuit work hydraulics requiring continuous 350 bar operation, elevated rotational speeds, and precise electrohydraulic regulation:
Heavy Mining Excavators & High-Tonnage Diggers: Primary implement hydraulic pump powering boom lift, arm crowd, bucket curling, and travel drive circuits on 40 to 200-ton mining and quarry excavators.
Rotary Drilling Rigs & Piling Machinery: Powers high-pressure rotary powerhead motors, crowd winches, mast elevation cylinders, and auxiliary breakout clamping systems.
Heavy Mobile & All-Terrain Cranes: Supplies continuous 350 bar hydraulic power to multi-stage telescopic boom extension cylinders, main hoisting winches, outrigger beams, and proportional slewing circuits.
High-Speed Machine Drive Applications (HYH11VLO with Charge Pump): The integrated centrifugal impeller in sizes 130~260 allows diesel direct-drive operation up to 2500 rpm without requiring pressurized header tanks or external charge circuits.
Heavy Forestry & Logging Equipment: Powers high-flow harvester felling heads, tree delimbing knives, high-speed feed rollers, and log loader crane arms operating in severe duty cycles.
Multi-Pump Tandem Power Packs: Standardized through-drive couplings (SAE A, B, C, D, E) allow full 100% engine torque transfer to secondary piston or gear pumps for combined multi-actuator open circuits.
| Key Specifications Overview
| Parameter | Hengyuhang HYH11V(L)O Series 1x Specification (OEM Benchmark Standard) |
|---|---|
| Pump Classification | Axial Piston Variable Displacement Pump in Swashplate Design for Open Circuits (HYH11VO / HYH11VLO Series 1x) |
| OEM Interchange Reference | Direct 1:1 replacement for Rexroth A11VO / A11VLO Series 1x and custom-engineered alternative for Danfoss D1P (65~260) |
| Displacement Size Range | 8 Heavy-Duty Frame Sizes: 40, 60, 75, 95, 130, 145, 190, and 260 cm³/rev (2.56 to 15.87 in³/rev) |
| Charge Pump Configuration (HYH11VLO) | Integrated centrifugal charge pump / impeller optional on sizes 130, 145, 190, and 260 to boost permissible drive speeds |
| Nominal Continuous Pressure (pnom) | 350 bar (5100 psi / 35 MPa) continuous working pressure at service port A (high-pressure side) |
| Maximum Peak Operating Pressure (pmax) | 400 bar (5800 psi / 40 MPa) maximum intermittent peak pressure (single operating period < 1 s; total operating period: 300 h) |
| Minimum Pressure at Port A (pA abs) | Hydraulic high-pressure holding required to prevent slipper shoe separation from swashplate during 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 pressure range |
| Rotational Speed Range (Without Charge Pump) | HYH11VO: 2000 rpm (Size 260) to 3000 rpm (Size 40); Maximum speed at reduced displacement up to 3500 rpm |
| Rotational Speed Range (With Charge Pump) | HYH11VLO: 2500 rpm (Sizes 130, 145, 190) and 2300 rpm (Size 260) at full maximum displacement Vg max |
| Minimum Rotational Speed (n_min) | 500 rpm continuous minimum operating speed across all displacement sizes |
| Suction Pressure Range (Port S Inlet) | Without charge pump: pS min ≥ 0.8 bar abs, pS max ≤ 30 bar abs; With charge pump: pS min ≥ 0.6 bar abs, pS max ≤ 2 bar abs |
| Case Drain Pressure Rating (Ports T1, T2) | Maximum continuous case pressure pL max ≤ 2 bar absolute (30 psi); Case pressure must always exceed ambient pressure |
| Rotary Group & Swashplate Technology | Heavy-duty swashplate design with steel slipper shoes, hardened cylinder barrel, dual servo pistons, and high-load bearings |
| Mounting Flange Standards | ISO 3019-1 (SAE J744): SAE B 2-bolt (40, 60); SAE C 4-bolt (75, 95); SAE D 4-bolt (130~190); SAE E 4-bolt (260); SAE J617 flywheel option |
| Drive Shaft Configurations | Splined shaft DIN 5480 (Code Z); Parallel keyed DIN 6885 (Code P); Splined shaft ANSI B92.1a Code S (single) / Code T (tandem) |
| Working Fluid Ports (Port A Outlet) | SAE J518 / ISO 6162-2 Code 62 High Pressure: 3/4 in (40, 60); 1 in (75, 95, 130/145); 1 1/4 in (130/145 LO); 1 1/2 in (190, 260), 400 bar rated |
| Suction Fluid Ports (Port S / S1 Inlet) | SAE J518 / ISO 6162-1 Code 61: 2 in (40, 60); 2 1/2 in (75); 3 in (95, 130/145); 3 1/2 in (190, 260); 4 in (260 LO), 30 bar / 2 bar rated |
| Case Drain & Air Bleed Ports (T1, T2, R) | Metric DIN 3852 (Code 12): M22×1.5 (40~75); M26×1.5 (95~145); M33×2 (190~260); or UNF with O-ring ISO 11926 (Code 07) |
| Sealing Material System | Code V: Premium FKM (fluorocarbon rubber) standard (-25°C to +110°C); Code N: NBR with FKM shaft seal ring (-40°C to +90°C) |
| 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 | 100% full-torque through-drive rear mountings (SAE A, B, C, D, E) for driving secondary piston or gear pumps up to same frame size |
| Technical Performance Matrix Across Available Sizes
| ■ Standard Open-Circuit Series Without Charge Pump (HYH11VO — 40 to 260 cm³/rev, 350 bar Nominal / 400 bar Peak) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model Number (Hengyuhang Series) | Geometric Displacement Vg max (cm³/rev / in³) | Drive Speed (rpm) | Delivery Flow @ n_nom (L/min) | Drive Power @ 350 bar (kW) | Torque Output @ 350 bar (Nm) | Rotary Stiffness c (kNm/rad) | Inertia JTW (kg·m²) | Angular Accel. α (rad/s²) | Case Fill (L / gal) | Unit Mass m w/o thru (kg) | ||
| Nominal n_nom | Max n_max | Shaft Z | Shaft S | |||||||||
| HYH11VO-40 | 42.00 (2.56) | 3000 | 3500 | 126.0 | 74.0 | 234.0 | 88.9 | 58.3 | 0.0048 | 22,000 | 1.10 (0.29) | 32.0 |
| HYH11VO-60 | 58.50 (3.57) | 2700 | 3250 | 158.0 | 92.0 | 326.0 | 102.4 | 86.3 | 0.0082 | 17,500 | 1.35 (0.36) | 40.0 |
| HYH11VO-75 | 74.00 (4.52) | 2550 | 3000 | 189.0 | 110.0 | 412.0 | 145.8 | 101.9 | 0.0115 | 15,000 | 1.85 (0.49) | 45.0 |
| HYH11VO-95 | 93.50 (5.71) | 2350 | 2780 | 220.0 | 128.0 | 521.0 | 199.6 | 173.7 | 0.0173 | 13,000 | 2.10 (0.55) | 53.0 |
| HYH11VO-130 | 130.00 (7.93) | 2100 | 2500 | 273.0 | 159.0 | 724.0 | 302.5 | 236.9 | 0.0318 | 10,500 | 2.90 (0.77) | 66.0 |
| HYH11VO-145 | 145.00 (8.85) | 2200 | 2500 | 319.0 | 186.0 | 808.0 | 302.5 | 236.9 | 0.0341 | 9000 | 2.90 (0.77) | 67.0 |
| HYH11VO-190 | 193.00 (11.78) | 2100 | 2100 | 405.0 | 236.0 | 1075.0 | 346.2 | 259.8 | 0.0550 | 6800 | 3.80 (1.00) | 95.0 |
| HYH11VO-260 | 260.00 (15.87) | 2000 | 2300 | 468.0 | 273.0 | 1448.0 | 686.5 | 352.0 | 0.0878 | 4800 | 4.60 (1.22) | 125.0 |
| ■ High-Speed Boosted Series With Charge Pump (HYH11VLO — 130 to 260 cm³/rev, 350 bar Nominal / 400 bar Peak) | ||||||||||||
| HYH11VLO-130 | 130.00 (7.93) | 2500 | 2500 | 325.0 | 190.0 | 724.0 | 302.5 | 236.9 | 0.0337 | 10,500 | 2.90 (0.77) | 72.0 |
| HYH11VLO-145 | 145.00 (8.85) | 2500 | 2500 | 363.0 | 211.0 | 808.0 | 302.5 | 236.9 | 0.0360 | 9000 | 2.90 (0.77) | 73.0 |
| HYH11VLO-190 | 193.00 (11.78) | 2500 | 2500 | 483.0 | 281.0 | 1075.0 | 346.2 | 259.8 | 0.0577 | 6800 | 3.80 (1.00) | 104.0 |
| HYH11VLO-260 | 260.00 (15.87) | 2300 | 2300 | 598.0 | 349.0 | 1448.0 | 686.5 | 352.0 | 0.0895 | 4800 | 4.60 (1.22) | 138.0 |
| Control Devices & Operating Mechanisms
| Control Code | Control Classification | Control Signal & Pilot Supply | Functional Operation & Machine Application |
|---|---|---|---|
| LR / LRD | Power Controller with Pressure Cut-Off | Mechanical hyperbolic power setting with internal pressure cut-off | Regulates pump displacement along a hyperbolic power curve to prevent engine stalling by limiting absorbed hydraulic horsepower to the prime mover's rating across fluctuating working pressures. |
| LRDS / L...S | Power Controller with Pressure Cut-Off & Load-Sensing | Load pressure signal connected via port X with load-sensing spool | Combines hyperbolic horsepower limiting, maximum system pressure cut-off, and hydraulic load-sensing flow matching to ensure optimal multi-actuator control efficiency and minimal heat dissipation. |
| LR.C | Power Controller with Cross-Sensing Summation | Pilot interconnect line between dual pumps in tandem or parallel | Summation power control for multi-circuit hydraulic excavators; maintains total engine power output across two variable pumps by dynamically balancing displacement between circuits. |
| LE2 / LE2S | Power Controller with Electric Proportional Override | Proportional electric current signal (24V DC solenoid, DEUTSCH DT04-2P) | Allows dynamic electronic adjustment of the hyperbolic power setting from the vehicle electronic management system (ECU) based on engine speed, operating modes, or fuel economy settings. |
| DR / DRS / DRG | Pressure Controller / Load-Sensing / Remote Pressure | Hydraulic pressure sensing; port X for load-sensing (DRS) or remote relief (DRG) | Maintains constant circuit pressure (DR), matches output flow directly to proportional directional control valve demand (DRS), or permits remote multi-stage pressure relief setting via pilot line (DRG). |
| HD2 / HD2D | Hydraulic Proportional Displacement Control | Hydraulic pilot pressure signal (Δp = 25 bar) at pilot port Y | Direct proportional adjustment of swashplate tilt angle and pump displacement via an external hydraulic pilot pressure signal, available with internal pressure cut-off (HD2D). |
| EP2 / EP2D | Electrical Proportional Displacement Control | Proportional electric current (24V DC solenoid) with spring return | Electrical proportional displacement positioning; pump displacement increases proportionally with control current, available with hydraulic pressure cut-off (EP2D) or remote control (EP2G). |
| EC4 / EB4 | Electrohydraulic Control Valve with Swivel Angle Sensor | Electric current 12V/24V DC with integrated Hall swivel angle sensor PAL | Direct closed-loop electrohydraulic displacement control with real-time electronic angle position feedback for advanced digital mobile machinery controls. |
| Mounting Flange, Shaft and Port Specifications Across Sizes
| Size Model | Mounting Flange Standards | Drive Shaft Options (Splined & Keyed) | Fluid Port Connections (Working, Suction, Drain & Pilot) |
|---|---|---|---|
| HYH11VO-40 | Code C: ISO 3019-1 (SAE J744 101-2 / SAE B 2-bolt: Pilot Ø101.6 mm, pitch 146 mm) | Code Z: DIN 5480 W30×2×14×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 1 in 15T 16/32DP; Code T: ANSI spline | Port A Working: SAE J518 3/4 in (400 bar, M10×1.5); Port S Suction: SAE J518 2 in (30 bar, M12×1.75); Drain T1/T2: DIN 3852 M22×1.5; Bleed R: M22×1.5; Pilot X: M14×1.5 / 7/16-20 UNF |
| HYH11VO-60 | Code C: ISO 3019-1 (SAE J744 101-2 / SAE B 2-bolt: Pilot Ø101.6 mm, pitch 146 mm) | Code Z: DIN 5480 W35×2×16×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 1 1/4 in 14T 12/24DP; Code T: ANSI spline | Port A Working: SAE J518 3/4 in (400 bar, M10×1.5); Port S Suction: SAE J518 2 in (30 bar, M12×1.75); Drain T1/T2: DIN 3852 M22×1.5; Bleed R: M22×1.5; Pilot X: M14×1.5 / 7/16-20 UNF |
| HYH11VO-75 | Code D: ISO 3019-1 (SAE J744 127-4 / SAE C 4-bolt: Pilot Ø127.0 mm, pitch circle Ø161.9 mm) | Code Z: DIN 5480 W40×2×18×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 1 1/4 in 14T 12/24DP; Code T: ANSI spline | Port A Working: SAE J518 1 in (400 bar, M12×1.75); Port S Suction: SAE J518 2 1/2 in (30 bar, M12×1.75); Drain T1/T2: DIN 3852 M22×1.5; Bleed R: M22×1.5; Pilot X: M14×1.5 / 7/16-20 UNF |
| HYH11VO-95 | Code D: ISO 3019-1 (SAE J744 127-4 / SAE C 4-bolt: Pilot Ø127.0 mm, pitch circle Ø161.9 mm); or Code G: SAE J617 | Code Z: DIN 5480 W45×2×21×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 1 3/4 in 13T 8/16DP; Code T: ANSI spline | Port A Working: SAE J518 1 in (400 bar, M12×1.75); Port S Suction: SAE J518 3 in (30 bar, M16×2); Drain T1/T2: DIN 3852 M26×1.5; Bleed R: M26×1.5; Pilot X: M14×1.5 / 7/16-20 UNF |
| HYH11V(L)O-130 | Code D: ISO 3019-1 (SAE J744 152-4 / SAE D 4-bolt: Pilot Ø152.4 mm, pitch circle Ø228.6 mm); or Code G: SAE J617 | Code Z: DIN 5480 W50×2×24×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 1 3/4 in 13T 8/16DP | Port A Working: SAE J518 1 in (VO) / 1 1/4 in (VLO, 400 bar); Port S Suction: SAE J518 3 in (30 bar VO / 2 bar VLO); Drain T1/T2: DIN 3852 M26×1.5; Bleed R: M26×1.5 |
| HYH11V(L)O-145 | Code D: ISO 3019-1 (SAE J744 152-4 / SAE D 4-bolt: Pilot Ø152.4 mm, pitch circle Ø228.6 mm); or Code G: SAE J617 | Code Z: DIN 5480 W50×2×24×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 1 3/4 in 13T 8/16DP | Port A Working: SAE J518 1 in (VO) / 1 1/4 in (VLO, 400 bar); Port S Suction: SAE J518 3 in (30 bar VO / 2 bar VLO); Drain T1/T2: DIN 3852 M26×1.5; Bleed R: M26×1.5 |
| HYH11V(L)O-190 | Code D: ISO 3019-1 (SAE J744 152-4 / SAE D 4-bolt: Pilot Ø152.4 mm, pitch circle Ø228.6 mm); or Code G: SAE J617 | Code Z: DIN 5480 W55×2×26×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 2 in 15T 8/16DP; Code T: ANSI spline | Port A Working: SAE J518 1 1/2 in (400 bar, M16×2); Port S Suction: SAE J518 3 1/2 in (30 bar VO / 2 bar VLO); Drain T1/T2: DIN 3852 M33×2; Bleed R: M33×2; Pilot X: M14×1.5 |
| HYH11V(L)O-260 | Code D: ISO 3019-1 (SAE J744 165-4 / SAE E 4-bolt: Pilot Ø165.1 mm, pitch circle Ø224.5 mm); or Code G: SAE J617 | Code Z: DIN 5480 W60×2×28×9g; Code P: DIN 6885 keyed; Code S: ANSI B92.1a 2 in 15T 8/16DP; Code T: ANSI spline | Port A Working: SAE J518 1 1/2 in (400 bar, M16×2); Port S Suction: SAE J518 3 1/2 in (VO) / 4 in (VLO, 2 bar); Drain T1/T2: DIN 3852 M33×2; Bleed R: M33×2 |
| Through-Drive Options and Multi-Pump Combinations
| Through-Drive Code | Mounting Flange Standard | Internal Splined Coupling Hub | Available Pump Sizes & Machine Combination |
|---|---|---|---|
| N00 | Without through drive | None (closed rear housing end) | Single pump standalone open-circuit application (Sizes 40 to 260) |
| 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 pilot or steering circuits (Sizes 40~260) |
| K52 | ISO 3019-1 82-2 (SAE A 2-bolt) | Spline ANSI B92.1a 3/4 in 11T 16/32DP | Secondary open-circuit piston or gear pumps (HYH10VO-18, HYH-CBK) (Sizes 40~260) |
| K68 | ISO 3019-1 101-2 (SAE B 2-bolt) | Spline ANSI B92.1a 7/8 in 13T 16/32DP | Secondary HYH10VO-28/45, HYH10VSO-28/45, heavy-duty gear pumps (Sizes 40~260) |
| K04 | ISO 3019-1 101-2 (SAE B 2-bolt) | Spline ANSI B92.1a 1 in 15T 16/32DP | Secondary HYH10VO-45, HYH11VO-40, heavy mobile gear pumps (Sizes 40~260) |
| K07 | ISO 3019-1 127-2 (SAE C 2-bolt) | Spline ANSI B92.1a 1 1/4 in 14T 12/24DP | Secondary HYH10VO-71, HYH11VO-60/75 piston pumps (Sizes 60~260) |
| K24 | ISO 3019-1 127-2 (SAE C 2-bolt) | Spline ANSI B92.1a 1 1/2 in 17T 12/24DP | Secondary HYH10VO-100, HYH10VSO-100 piston pumps (Sizes 95~260) |
| K17 | ISO 3019-1 152-4 (SAE D 4-bolt) | Spline ANSI B92.1a 1 3/4 in 13T 8/16DP | Full 100% torque tandem combination with identical HYH11VO-130/145 pumps (Sizes 130~260) |
| K80 | ISO 3019-1 165-4 (SAE E 4-bolt) | Spline ANSI B92.1a 1 3/4 in 13T 8/16DP | Heavy tandem secondary mounting for HYH11VO-260 open-circuit pump (Size 260) |
| Direct Interchangeability and OEM Replacement Matrix
| Hengyuhang Series Model | Rexroth OEM Reference Model (A11VO / A11VLO Series 1x) | Danfoss OEM Reference Model (D1P High Power Series) | Interchangeability Verification Status |
|---|---|---|---|
| HYH11VO-40 | A11VO 40 LRD / 10R-NZC12N00 | – (Closest alternative D1P-065) | 100% Direct Physical & Functional Drop-in Replacement for Rexroth |
| HYH11VO-60 | A11VO 60 LRDS / 10R-NZC12N00 | D1P-065 NPNN (or NPSN load-sensing) | 100% Direct Replacement for Rexroth; Custom Alternative for Danfoss D1P-065 |
| HYH11VO-75 | A11VO 75 LRDS / 10R-NZD12N00 | D1P-065 NPSN (or TPSN power control) | 100% Direct Replacement for Rexroth; High-Capacity Upgrade for Danfoss D1P-065 |
| HYH11VO-95 | A11VO 95 LRDS / 10R-NZD12N00 | – (Intermediate frame displacement) | 100% Direct Physical & Functional Drop-in Replacement for Rexroth |
| HYH11VO-130 | A11VO 130 LRDS / 10R-NZD12N00 | D1P-130 NPSN / TPSN (No Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-130 |
| HYH11VLO-130 | A11VLO 130 LRDS / 10R-NZD12N00 | D1P-130 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; Direct Match for Danfoss D1P Impeller |
| HYH11VO-145 | A11VO 145 LRDS / 11R-NZD12N00 | D1P-145 NPSN / TPSN (No Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-145 |
| HYH11VLO-145 | A11VLO 145 LRDS / 11R-NZD12N00 | D1P-145 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; Direct Match for Danfoss D1P Impeller |
| HYH11VO-190 | A11VO 190 LRDS / 11R-NZD12N00 | D1P-193 NPSN / TPSN (Standard Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-193 |
| HYH11VLO-190 | A11VLO 190 LRDS / 11R-NZD12N00 | D1P-193 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; 1:1 Match for Danfoss D1P-193 Impeller |
| HYH11VO-260 | A11VO 260 LRDS / 11R-NZD12N00 | D1P-260 NPSN / TPSN (Standard Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-260 |
| HYH11VLO-260 | A11VLO 260 LRDS / 11R-NZD12N00 | D1P-260 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; 1:1 Match for Danfoss D1P-260 Impeller |
| Model Coding & Ordering Structure
| Code Field | Field Designation | Available Standard Codes | Technical Definition & Configuration Meaning |
|---|---|---|---|
| [01] Unit Type | Axial Piston Variable Pump | HYH11V | Swashplate variable displacement machine, nominal pressure 350 bar (5100 psi), max 400 bar (5800 psi) |
| [02] Charge Pump | Operating Mode Configuration | O / LO | Code O: Open circuit without charge pump (HYH11VO); Code LO: With integrated charge pump / impeller (HYH11VLO) |
| [03] Frame Size | Geometric Displacement (cm³) | 40 / 60 / 75 / 95 / 130 / 145 / 190 / 260 | Nominal displacement size Vg max in cm³/rev (42.0, 58.5, 74.0, 93.5, 130.0, 145.0, 193.0, 260.0) |
| [04] Control Device | Displacement Control Mechanism | LR / LRD / LRDS / LR.C / LE2 / DR / DRS / HD2 / EP2 / EC4 / EB4 | LR: Power control; LRDS: Power + LS; LE2: Electric override; DRS: Pressure + LS; HD2: Hydraulic pilot; EP2: Electric prop.; EC4: Servo valve |
| [05] Series | Series Designation | 1 | Series 1 |
| [06] Index | Index Number | 0 / 1 | Index 0: Sizes 40 to 130; Index 1: Sizes 145 to 260 |
| [07] Rotation | Direction of Rotation | R / L | Code R: Clockwise; Code L: Counter-Clockwise, viewed facing drive shaft |
| [08] Seals | Sealing Material System | V / N | Code V: Premium FKM (fluorocarbon rubber) standard; Code N: NBR with FKM shaft seal ring |
| [09] Drive Shaft | Input Shaft Configuration | Z / P / S / T | Code Z: Splined shaft DIN 5480; Code P: Parallel keyed DIN 6885; Code S: Splined ANSI B92.1a (single); Code T: Splined ANSI (combination) |
| [10] Mounting Flange | Mounting Flange Style | C / D / G | Code C: ISO 3019-1 2-bolt (SAE B on 40, 60); Code D: ISO 3019-1 4-bolt (SAE C, D, E); Code G: SAE J617 flywheel housing |
| [11] Working Ports | Service Port Configuration | 12 / 07 | Code 12: SAE pressure/suction ports lateral, metric DIN 13 thread, DIN 3852 ports; Code 07: SAE lateral ports, UNF ISO 11926 ports |
| [12] Through Drive | Rear Auxiliary Attachment | N00 / K01 / K52 / K68 / K04 / K07 / K24 / K17 / K80 | Code N00: Without through drive; Codes K01~K80: Standard rear attachment (SAE A, B, C, D, E) up to 100% engine torque transfer |
| Technical Performance Matrix Across Available Sizes
| ■ Standard Open-Circuit Series Without Charge Pump (HYH11VO — 40 to 260 cm³/rev, 350 bar Nominal / 400 bar Peak) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model Number (Hengyuhang Series) | Geometric Displacement Vg max (cm³/rev / in³) | Drive Speed (rpm) | Delivery Flow @ n_nom (L/min) | Drive Power @ 350 bar (kW) | Torque Output @ 350 bar (Nm) | Rotary Stiffness c (kNm/rad) | Inertia JTW (kg·m²) | Angular Accel. α (rad/s²) | Case Fill (L / gal) | Unit Mass m w/o thru (kg) | ||
| Nominal n_nom | Max n_max | Shaft Z | Shaft S | |||||||||
| HYH11VO-40 | 42.00 (2.56) | 3000 | 3500 | 126.0 | 74.0 | 234.0 | 88.9 | 58.3 | 0.0048 | 22,000 | 1.10 (0.29) | 32.0 |
| HYH11VO-60 | 58.50 (3.57) | 2700 | 3250 | 158.0 | 92.0 | 326.0 | 102.4 | 86.3 | 0.0082 | 17,500 | 1.35 (0.36) | 40.0 |
| HYH11VO-75 | 74.00 (4.52) | 2550 | 3000 | 189.0 | 110.0 | 412.0 | 145.8 | 101.9 | 0.0115 | 15,000 | 1.85 (0.49) | 45.0 |
| HYH11VO-95 | 93.50 (5.71) | 2350 | 2780 | 220.0 | 128.0 | 521.0 | 199.6 | 173.7 | 0.0173 | 13,000 | 2.10 (0.55) | 53.0 |
| HYH11VO-130 | 130.00 (7.93) | 2100 | 2500 | 273.0 | 159.0 | 724.0 | 302.5 | 236.9 | 0.0318 | 10,500 | 2.90 (0.77) | 66.0 |
| HYH11VO-145 | 145.00 (8.85) | 2200 | 2500 | 319.0 | 186.0 | 808.0 | 302.5 | 236.9 | 0.0341 | 9000 | 2.90 (0.77) | 67.0 |
| HYH11VO-190 | 193.00 (11.78) | 2100 | 2100 | 405.0 | 236.0 | 1075.0 | 346.2 | 259.8 | 0.0550 | 6800 | 3.80 (1.00) | 95.0 |
| HYH11VO-260 | 260.00 (15.87) | 2000 | 2300 | 468.0 | 273.0 | 1448.0 | 686.5 | 352.0 | 0.0878 | 4800 | 4.60 (1.22) | 125.0 |
| ■ High-Speed Boosted Series With Charge Pump (HYH11VLO — 130 to 260 cm³/rev, 350 bar Nominal / 400 bar Peak) | ||||||||||||
| HYH11VLO-130 | 130.00 (7.93) | 2500 | 2500 | 325.0 | 190.0 | 724.0 | 302.5 | 236.9 | 0.0337 | 10,500 | 2.90 (0.77) | 72.0 |
| HYH11VLO-145 | 145.00 (8.85) | 2500 | 2500 | 363.0 | 211.0 | 808.0 | 302.5 | 236.9 | 0.0360 | 9000 | 2.90 (0.77) | 73.0 |
| HYH11VLO-190 | 193.00 (11.78) | 2500 | 2500 | 483.0 | 281.0 | 1075.0 | 346.2 | 259.8 | 0.0577 | 6800 | 3.80 (1.00) | 104.0 |
| HYH11VLO-260 | 260.00 (15.87) | 2300 | 2300 | 598.0 | 349.0 | 1448.0 | 686.5 | 352.0 | 0.0895 | 4800 | 4.60 (1.22) | 138.0 |
| Hengyuhang Series Model | Rexroth OEM Reference Model (A11VO / A11VLO Series 1x) | Danfoss OEM Reference Model (D1P High Power Series) | Interchangeability Verification Status |
|---|---|---|---|
| HYH11VO-40 | A11VO 40 LRD / 10R-NZC12N00 | – (Closest alternative D1P-065) | 100% Direct Physical & Functional Drop-in Replacement for Rexroth |
| HYH11VO-60 | A11VO 60 LRDS / 10R-NZC12N00 | D1P-065 NPNN (or NPSN load-sensing) | 100% Direct Replacement for Rexroth; Custom Alternative for Danfoss D1P-065 |
| HYH11VO-75 | A11VO 75 LRDS / 10R-NZD12N00 | D1P-065 NPSN (or TPSN power control) | 100% Direct Replacement for Rexroth; High-Capacity Upgrade for Danfoss D1P-065 |
| HYH11VO-95 | A11VO 95 LRDS / 10R-NZD12N00 | – (Intermediate frame displacement) | 100% Direct Physical & Functional Drop-in Replacement for Rexroth |
| HYH11VO-130 | A11VO 130 LRDS / 10R-NZD12N00 | D1P-130 NPSN / TPSN (No Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-130 |
| HYH11VLO-130 | A11VLO 130 LRDS / 10R-NZD12N00 | D1P-130 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; Direct Match for Danfoss D1P Impeller |
| HYH11VO-145 | A11VO 145 LRDS / 11R-NZD12N00 | D1P-145 NPSN / TPSN (No Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-145 |
| HYH11VLO-145 | A11VLO 145 LRDS / 11R-NZD12N00 | D1P-145 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; Direct Match for Danfoss D1P Impeller |
| HYH11VO-190 | A11VO 190 LRDS / 11R-NZD12N00 | D1P-193 NPSN / TPSN (Standard Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-193 |
| HYH11VLO-190 | A11VLO 190 LRDS / 11R-NZD12N00 | D1P-193 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; 1:1 Match for Danfoss D1P-193 Impeller |
| HYH11VO-260 | A11VO 260 LRDS / 11R-NZD12N00 | D1P-260 NPSN / TPSN (Standard Impeller) | 100% Direct Replacement for Rexroth; Direct Alternative for Danfoss D1P-260 |
| HYH11VLO-260 | A11VLO 260 LRDS / 11R-NZD12N00 | D1P-260 NPSN / TPSN (With Impeller) | 100% Direct Replacement for Rexroth A11VLO; 1:1 Match for Danfoss D1P-260 Impeller |
| Code Field | Field Designation | Available Standard Codes | Technical Definition & Configuration Meaning |
|---|---|---|---|
| [01] Unit Type | Axial Piston Variable Pump | HYH11V | Swashplate variable displacement machine, nominal pressure 350 bar (5100 psi), max 400 bar (5800 psi) |
| [02] Charge Pump | Operating Mode Configuration | O / LO | Code O: Open circuit without charge pump (HYH11VO); Code LO: With integrated charge pump / impeller (HYH11VLO) |
| [03] Frame Size | Geometric Displacement (cm³) | 40 / 60 / 75 / 95 / 130 / 145 / 190 / 260 | Nominal displacement size Vg max in cm³/rev (42.0, 58.5, 74.0, 93.5, 130.0, 145.0, 193.0, 260.0) |
| [04] Control Device | Displacement Control Mechanism | LR / LRD / LRDS / LR.C / LE2 / DR / DRS / HD2 / EP2 / EC4 / EB4 | LR: Power control; LRDS: Power + LS; LE2: Electric override; DRS: Pressure + LS; HD2: Hydraulic pilot; EP2: Electric prop.; EC4: Servo valve |
| [05] Series | Series Designation | 1 | Series 1 |
| [06] Index | Index Number | 0 / 1 | Index 0: Sizes 40 to 130; Index 1: Sizes 145 to 260 |
| [07] Rotation | Direction of Rotation | R / L | Code R: Clockwise; Code L: Counter-Clockwise, viewed facing drive shaft |
| [08] Seals | Sealing Material System | V / N | Code V: Premium FKM (fluorocarbon rubber) standard; Code N: NBR with FKM shaft seal ring |
| [09] Drive Shaft | Input Shaft Configuration | Z / P / S / T | Code Z: Splined shaft DIN 5480; Code P: Parallel keyed DIN 6885; Code S: Splined ANSI B92.1a (single); Code T: Splined ANSI (combination) |
| [10] Mounting Flange | Mounting Flange Style | C / D / G | Code C: ISO 3019-1 2-bolt (SAE B on 40, 60); Code D: ISO 3019-1 4-bolt (SAE C, D, E); Code G: SAE J617 flywheel housing |
| [11] Working Ports | Service Port Configuration | 12 / 07 | Code 12: SAE pressure/suction ports lateral, metric DIN 13 thread, DIN 3852 ports; Code 07: SAE lateral ports, UNF ISO 11926 ports |
| [12] Through Drive | Rear Auxiliary Attachment | N00 / K01 / K52 / K68 / K04 / K07 / K24 / K17 / K80 | Code N00: Without through drive; Codes K01~K80: Standard rear attachment (SAE A, B, C, D, E) up to 100% engine torque transfer |
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