PVH098RO1AJ70B252000002001AB010A611AK00426A Vickers Eaton Axial Piston Pump 98cc 250bar

PVH098RO1AJ70B252000002001AB010A611AK00426A

Product Overview

The PVH098RO1AJ70B252000002001AB010A611AK00426A is an Eaton Vickers PVH Series variable displacement inline axial piston pump with a geometric displacement of 98.3 cm³/r (6.00 in³/r), belonging to the mid-range frame size of the PVH series. Designed for open-circuit systems, this pump features a pressure and flow compensator (Type B control), suitable for high-power hydraulic systems requiring precise control of both flow and pressure.

The PVH series pump utilizes a swashplate-type axial piston design with nine pistons arranged in the cylinder block. The pistons reciprocate parallel to the axis of rotation, with displacement determined by the swashplate angle. The swashplate is mounted in a movable yoke, enabling automatic displacement adjustment through the combined compensator. The series covers displacements from 57 to 141 cm³/r, with continuous operating pressures up to 250 bar and peak pressures up to 280 bar.

Manufactured to exact original specifications, this pump offers drop-in interchangeability—mounting flange, shaft, and port dimensions fully match original Vickers specifications. Every unit undergoes 100% simulated-condition bench testing covering rated pressure, peak pressure, and flow characterization.

Technical Specifications (Bulleted List)

• Full Model Code: PVH098RO1AJ70B252000002001AB010A611AK00426A

• Series: Eaton Vickers PVH Series

• Pump Type: Variable displacement inline axial piston, open circuit

• Geometric Displacement: 98.3 cm³/r (6.00 in³/r)

• Rated Continuous Pressure: 250 bar (3625 psi)

• Peak Pressure (Intermittent): 280 bar (4060 psi)

• Pressure Compensator Setting Range: 246–254 bar (3568–3684 psi)

• Flow Compensator Setting Range: 19–21 bar (276–305 psi)

• Rated Speed (127 mmHg inlet): 1500 rpm

• Rated Speed (zero inlet pressure): 1800 rpm

• Rated Speed (0.48 bar inlet): 1800 rpm

• Control Type: Pressure and flow compensator (Type B)

• Mounting Flange: SAE C, 4-bolt

• Input Shaft: 17T 12/24 DP spline, 62.0 mm shaft extension

• Rotation: Left hand (counterclockwise), left side inlet, right side pressure port

• Inlet Port: 2.500 SAE 4-bolt split flange, 1/2-13 UNC-2B thread

• Pressure Port: 1.000 SAE 4-bolt split flange, 3/8-16 UNC-2B thread

• Drain Port: 0.875-14 UNF-2B SAE O-ring port, bottom (top plugged)

• Shaft Seal: Fluorocarbon single shaft seal

• Theoretical Flow (@1800 rpm): Approx. 177 L/min

• Weight: Approx. 59 kg

Model Code Breakdown: PVH = open circuit heavy-duty variable piston pump; 098 = nominal displacement 98.3 cm³/r; R = right hand rotation; 01 = design version; AJ = side ported, SAE 4-bolt split flange; 70 = mounting and shaft configuration (17T spline, SAE C flange); B = pressure and flow compensator; 25 = pressure compensator setting 250 bar; 20 = flow compensator setting 20 bar; 0000 = no torque limiter; 2001 = design version & performance level; AB010A = seal, paint & detail configuration; 611AK00426A = auxiliary mounting and special option configuration.

Key Technical Advantages

1. Pressure and Flow Combined Compensator Control

This model features a Type B combined compensator with both pressure and flow compensation functions. The flow compensator continuously monitors system load flow demand, automatically adjusting swashplate angle to match actuator speed requirements, eliminating throttling losses. The pressure compensator activates when system pressure reaches the set value (246–254 bar), limiting maximum pressure to protect system components. The combined control mode delivers more precise flow-pressure matching under variable load conditions compared to single pressure compensation, significantly reducing system heat generation and energy consumption.

2. High Volumetric Efficiency Piston-Cylinder Fit

The cylinder block is constructed from high-strength alloy steel, with nine pistons precision-lapped to micron-level clearance with cylinder bores. At 250 bar continuous pressure and 1800 rpm rated speed, volumetric efficiency reaches 95% or higher. The cylinder block-valve plate friction pair is optimized for both sealing performance and wear life.

3. Heavy-Duty Bearings and Swashplate Support Structure

The input shaft is supported by heavy-duty bearings capable of handling combined radial and axial loads. The swashplate is mounted in a movable yoke supported by pivots, providing low friction and fast response during displacement changes. The pump design accommodates through-drive configurations for tandem-mounted auxiliary pumps.

4. Standardized SAE Interfaces and Drop-in Interchangeability

The pump features standard SAE port configurations: SAE C 4-bolt mounting flange, SAE 4-bolt split flange inlet and pressure ports (Code 61 standard pressure series), and SAE O-ring drain port. All interface dimensions match original Vickers specifications exactly, enabling direct replacement without piping modification.

Application Areas

• Injection Molding Machines: High-flow hydraulic power unit for clamp and injection circuits

• Machine Tool Hydraulic Systems: Primary oil supply pump for hydraulic power stations

• Construction Machinery: Main hydraulic pump for large excavators and cranes

• Metallurgical Equipment: Sustained high-pressure oil supply for heavy-load conditions

• Marine Hydraulic Systems: Deck machinery and steering gear hydraulic power source

• Large Presses: Main pump for hydraulic presses, providing high-flow constant-pressure power

Expert Maintenance Tips

Pre-Installation Check: Verify shaft-to-drive alignment within 0.05 mm tolerance. Use flexible couplings to compensate for minor angular misalignment. Tighten SAE C 4-bolt flange bolts in diagonal sequence to specified torque. Confirm suction line diameter meets pump inlet flow requirements.

First Start-Up: Fill the pump housing with clean hydraulic fluid to the overflow port level before starting—dry running is strictly prohibited. Run at no-load for 5–10 minutes during initial start-up, checking suction line sealing and case drain line flow.

Combined Compensator Adjustment: Factory pressure compensator setting is 250 bar, flow compensator setting is 20 bar. Adjust flow compensator first, then pressure compensator. Use a pressure gauge to monitor system pressure during adjustment. Adjustment increments should not exceed 10 bar per step, with stability verification after each adjustment.

Hydraulic Fluid Maintenance: ISO VG32/46/68 anti-wear hydraulic fluid is recommended, with cleanliness level not lower than ISO 4406 18/16/13. Normal operating temperature range: -20°C to +80°C. Check fluid cleanliness every 500 hours; replace filter elements when differential pressure exceeds 3 bar. Inlet pressure should be maintained within 0.07–0.48 bar (absolute) to prevent cavitation.

Storage Requirements: During storage, the pump interior should remain filled with rust-preventive oil, with all ports sealed. Storage temperature range: -20°C to +60°C, avoiding direct sunlight and humid environments. After 12 months of storage, re-bench testing is recommended.

二、PVH057R01AA10A250000002001AE010A

Product Overview

The PVH057R01AA10A250000002001AE010A is an Eaton Vickers PVH Series variable displacement inline axial piston pump with a geometric displacement of 57.4 cm³/r (3.50 in³/r), representing the smallest frame size in the PVH series. Designed for open-circuit systems, this pump features a pressure compensator (constant pressure control), suitable for medium-to-low flow hydraulic systems requiring constant pressure output.

The PVH series pump utilizes a swashplate-type axial piston design with nine pistons arranged in the cylinder block. The swashplate is mounted in a movable yoke, with displacement automatically adjusted through the pressure compensator. The pump design emphasizes compact structure and efficient operation, suitable for hydraulic systems with limited installation space and precise pressure control requirements.

Manufactured to exact original specifications, this pump offers drop-in interchangeability—mounting flange, shaft, and port dimensions fully match original Vickers specifications. Every unit undergoes 100% simulated-condition bench testing covering rated pressure, peak pressure, and flow characterization.

Technical Specifications (Bulleted List)

• Full Model Code: PVH057R01AA10A250000002001AE010A

• Series: Eaton Vickers PVH Series

• Pump Type: Variable displacement inline axial piston, open circuit

• Geometric Displacement: 57.4 cm³/r (3.50 in³/r)

• Rated Continuous Pressure: 250 bar (3625 psi)

• Peak Pressure (Intermittent): 280 bar (4060 psi)

• Pressure Compensator Setting: 250 bar (standard)

• Rated Speed (127 mmHg inlet): 1500 rpm

• Rated Speed (zero inlet pressure): 1800 rpm

• Rated Speed (0.48 bar inlet): 1800 rpm

• Control Type: Pressure compensator (Type A, constant pressure)

• Mounting Flange: SAE C, 4-bolt

• Input Shaft: Straight key, SAE C flange configuration

• Rotation: Right hand (clockwise, viewed from shaft end)

• Inlet Port: SAE 4-bolt split flange

• Pressure Port: SAE 4-bolt split flange

• Drain Port: SAE O-ring port

• Shaft Seal: Fluorocarbon single shaft seal

• Theoretical Flow (@1500 rpm): Approx. 83 L/min

• Theoretical Flow (@1800 rpm): Approx. 98 L/min

• Weight: Approx. 30 kg

Model Code Breakdown: PVH = open circuit heavy-duty variable piston pump; 057 = nominal displacement 57.4 cm³/r; R = right hand rotation; 01 = design version; AA = side ported, standard SAE flange configuration; 10 = mounting and shaft configuration; A = pressure compensator (Type A control); 25 = pressure compensator setting 250 bar; 0000 = no additional controls; 2001 = design version & performance level; AE010A = seal, paint & detail configuration.

Key Technical Advantages

1. Pressure Compensator Constant Pressure Control

This model features a Type A pressure compensator. When system pressure reaches the set value (factory 250 bar), the compensator automatically drives the swashplate back, reducing displacement to maintain constant system pressure—preventing overload and energy waste. On startup, the swashplate automatically returns to zero, enabling zero-pressure start with reduced starting torque shock. The pressure compensator delivers fast response and minimal pressure fluctuation, ideal for industrial applications requiring high pressure stability.

2. Compact Structure and High Power Density

The PVH057 is the smallest frame size in the PVH series, featuring a compact footprint and lightweight design (approx. 30 kg), suitable for applications with limited installation space. Despite its compact size, it maintains 250 bar continuous operating pressure capability with high power density. The cast iron housing with blue primer finish combines strength and corrosion resistance.

3. High Volumetric Efficiency Piston-Cylinder Fit

The cylinder block is constructed from high-strength alloy steel, with pistons precision-lapped to micron-level clearance with cylinder bores. At 250 bar continuous pressure and 1800 rpm rated speed, volumetric efficiency reaches 95% or higher. Theoretical flow is approximately 83 L/min at 1500 rpm and 98 L/min at 1800 rpm, covering medium-to-low flow hydraulic system requirements.

4. Standardized Interfaces and Drop-in Interchangeability

The pump features standard SAE port configurations: SAE C 4-bolt mounting flange, with all interface dimensions matching original Vickers specifications exactly, enabling direct replacement without piping modification. The rotating group utilizes a modular design, with critical components replaceable through rotating group kits.

Application Areas

• Medium-to-Small Injection Molding Machines: Hydraulic power unit for clamp and injection circuits

• Machine Tool Hydraulic Systems: Primary oil supply pump for hydraulic power stations

• Industrial Hydraulic Stations: Die-casting machines, forging equipment auxiliary hydraulic circuits

• Agricultural Machinery: Tractor hydraulic hitch systems, steering systems

• Material Handling Equipment: Forklift hydraulic system main pump

• Marine Auxiliary Hydraulic Systems: Hatch cover operation, windlass hydraulic power source

Expert Maintenance Tips

Pre-Installation Check: Verify shaft-to-drive alignment within 0.05 mm tolerance. Use flexible couplings to compensate for minor angular misalignment. Tighten SAE C 4-bolt flange bolts in diagonal sequence to specified torque.

First Start-Up: Fill the pump housing with clean hydraulic fluid to the overflow port level before starting—dry running is strictly prohibited. Run at no-load for 3–5 minutes during initial start-up, checking suction line sealing and case drain line flow.

Pressure Compensator Adjustment: Factory pressure compensator setting is 250 bar. To adjust, turn the adjustment screw counterclockwise to increase setting pressure, clockwise to decrease. Use a pressure gauge to monitor system pressure during adjustment. Adjustment increments should not exceed 10 bar per step.

Hydraulic Fluid Maintenance: ISO VG32/46/68 anti-wear hydraulic fluid is recommended, with cleanliness level not lower than ISO 4406 18/16/13. Normal operating temperature range: -20°C to +80°C. Check fluid cleanliness every 500 hours; replace filter elements when differential pressure exceeds 3 bar.

Storage Requirements: During storage, the pump interior should remain filled with rust-preventive oil, with all ports sealed. Storage temperature range: -20°C to +60°C. After 12 months of storage, re-bench testing is recommended.