A10VO60DR/52L-VSC12K68 Rexroth Piston Pump 60cc 280bar

Product Overview

The A10VO60DR/52L-VSC12K68 (full model code: A A10V O 60 DR /52L-VSC12K68, Rexroth material number R902506143) is a Bosch Rexroth A10VO Series Series 52 swashplate-type axial piston variable displacement pump. The A10VO Series is Rexroth’s cost-effective medium-pressure pump line for open-circuit applications, covering displacements from 10 to 100 cm³/rev. This model delivers a maximum displacement of 60 cm³/rev.

This model features DR control—Pressure Control, which automatically adjusts displacement via a pressure compensator in response to system load demand, maintaining constant system pressure. 52L denotes the Series 52 design platform with Left-hand rotation (counter-clockwise when viewed from the shaft end) configuration. VSC12K68 is the shaft, mounting flange, and port configuration code.

As a direct OEM-equivalent replacement solution for the Bosch Rexroth A10VO Series, this product offers complete in-situ interchangeability, strictly adhering to Rexroth’s original design specifications and mounting interface standards. Every unit undergoes 100% simulated duty-cycle testing, ensuring that key performance metrics—including volumetric efficiency, pressure-flow characteristics, and case drain flow at rated pressure and full displacement—meet or exceed original factory specifications.

Technical Specifications (Bulleted List)

• Model Number: A10VO60DR/52L-VSC12K68 (A A10V O 60 DR /52L-VSC12K68)

• Rexroth Material Number (MAT. NO.): R902506143

• Brand Series: Bosch Rexroth A10VO Series (Series 52)

• Pump Type: Swashplate Axial Piston Variable Displacement Pump (Open Circuit)

• Geometric Displacement: 60 cm³/rev

• Nominal Pressure (Continuous): 280 bar (4000 psi)

• Peak Pressure (Intermittent): 350 bar (5100 psi)

• Maximum Input Speed: Approx. 2700–3000 rpm

• Control Type: DR – Pressure Control

• Rotation Direction: L – Left-hand (counter-clockwise from shaft end)

• Through-Drive Capability: Supports through-drive for mounting additional pumps

• Housing Material: High-strength Cast Iron

• Hydraulic Fluid: Mineral Oil HLP (DIN 51524-2)

• Seal Material: FKM (Fluororubber)

• Maximum Fluid Temperature: 115 °C

• Maximum Case Drain Pressure: 2 bar (29 psi)

• Maximum Suction Height: 800 mm

• Weight: Approx. 21–25 kg (configuration dependent)

Key Technical Advantages

1. DR Pressure Control for Stable and Reliable System Pressure
DR control automatically adjusts the swashplate angle via a pressure compensator in response to system load demand, maintaining constant system pressure at the set value. When system pressure reaches the compensator set point, the pump automatically reduces displacement to only the small flow required to maintain pressure, significantly reducing overflow losses and system heat generation.

2. Open-Circuit Dedicated Design with Flexible Through-Drive Expansion
The A10VO Series is specifically designed for open-circuit hydraulic systems, with output flow proportional to drive speed and displacement. This model features through-drive capability, allowing additional pumps (up to the same nominal size) to be mounted, providing flexible expansion options for multi-pump systems.

3. 280 bar Rated Pressure with 350 bar Peak Capacity
The A10VO60 delivers a rated working pressure of 280 bar (4000 psi) with peak pressures up to 350 bar (5100 psi) . At 60 cm³/rev displacement with 2700–3000 rpm maximum speed, it outputs substantial hydraulic power.

4. Low Operating Noise with Short Control Response Times
The A10VO Series is renowned for its low operating noise and short control response times. Optimized swashplate and piston/slipper friction pair designs, combined with precision manufacturing processes, ensure reliable and stable performance over long-term continuous operation.

5. High Power Density with Compact Design
The A10VO Series employs a swashplate axial piston design that delivers excellent power density within a compact footprint. The short construction (Kurzbauende) design makes it particularly suitable for mobile and industrial equipment with constrained installation space.

6. Excellent Fluid Compatibility with Reliable Sealing
This model features FKM (fluororubber) sealing material, providing excellent resistance to mineral oils and various synthetic hydraulic fluids. With a maximum fluid temperature of 115 °C, it ensures long-term sealing reliability under high-temperature operating conditions.

Application Areas

• Concrete Mixer Trucks: Hydrostatic drive for mixer drum rotation

• Construction Equipment: Road rollers, pavers, skid steer loaders

• Agricultural Machinery: Combine harvesters, tractor hydraulic systems

• Industrial Hydraulic Systems: Injection molding machines, presses, and other open-circuit hydraulic systems

• Fan Drive Systems: Hydraulic drive for radiator cooling fans

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as A10VO60DR/52L-VSC12K68 with Rexroth material number R902506143. This is a Series 52 left-hand rotation configuration (counter-clockwise from shaft end)—pay special attention to matching the rotation direction with the host machine PTO. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation.

2. Fluid Cleanliness Control: The A10VO Series recommends using mineral hydraulic oil HLP conforming to DIN 51524-2. A minimum filtration rating of ISO 18/15 is recommended. Complete system flushing is mandatory before initial start-up.

3. Inlet Condition Assurance: Maximum suction height is 800 mm. Keep suction lines as short and straight as possible, avoiding unnecessary bends and restrictions. Ensure absolute inlet pressure does not fall below 0.8 bar. Maximum suction port pressure must not exceed 10 bar.

4. Case Drain Pressure Monitoring: Maximum case drain pressure is 2 bar (29 psi) . During installation, ensure the drain port is positioned higher than the pump body to prevent oil starvation in the pump chamber after shutdown. Install a pressure gauge on the case drain line for real-time monitoring.

5. Initial Start-Up & Priming: Before first start-up, pre-lubricate the pump by filling the housing with clean hydraulic fluid through the case drain port. Perform a brief jog start (5–10 seconds) to confirm correct rotation direction (left-hand), and check for abnormal noise or leakage. Then正式 start the pump and run at low load for several minutes to purge air from the pump and system lines.

6. Fluid Temperature Control: Maximum allowable fluid temperature is 115 °C. Allow fluid to reach normal operating temperature (approx. 30–60 °C) before loading to rated conditions, to prevent cavitation and wear caused by low-temperature high viscosity.

Model 2: AA10VSO28DFR1/31R-VPA12N00

Product Overview

The AA10VSO28DFR1/31R-VPA12N00 (full model code: A A10VSO 28 DFR1/31R-VPA12N00, Rexroth material number R910916805) is a Bosch Rexroth A10VSO Series Series 31 swashplate-type axial piston variable displacement pump. The A10VSO Series is Rexroth’s versatile medium-pressure piston pump line for open-circuit hydrostatic drive applications, covering displacements from 10 to 180 cm³/rev. This model delivers a maximum displacement of 28 cm³/rev.

This model features DFR1 control—Pressure and Flow Compensator control, integrating pressure compensation and flow control with bypass functionality. DFR1 control automatically adjusts displacement in response to system pressure changes to maintain constant pressure, while the flow control valve limits maximum flow for energy-efficient operation. 31R denotes the Series 31 design platform with Right-hand rotation (clockwise when viewed from the shaft end) configuration. VPA12N00 is the shaft, mounting flange, and port configuration code.

As a direct OEM-equivalent replacement solution for the Bosch Rexroth A10VSO Series, this product offers complete in-situ interchangeability, strictly adhering to Rexroth’s original design specifications and mounting interface standards. Every unit undergoes 100% simulated duty-cycle testing, ensuring that key performance metrics—including volumetric efficiency, pressure-flow characteristics, and case drain flow at rated pressure and full displacement—meet or exceed original factory specifications.

Technical Specifications (Bulleted List)

• Model Number: AA10VSO28DFR1/31R-VPA12N00 (A A10VSO 28 DFR1/31R-VPA12N00)

• Rexroth Material Number (MAT. NO.): R910916805

• Brand Series: Bosch Rexroth A10VSO Series (Series 31)

• Pump Type: Swashplate Axial Piston Variable Displacement Pump (Open Circuit)

• Geometric Displacement: 28 cm³/rev (1.71 in³/rev)

• Nominal Pressure (Continuous): 280 bar (4061 psi)

• Peak Pressure (Intermittent): 350 bar (5076 psi)

• Maximum Speed (at full displacement): 3000 rpm

• Maximum Flow (3000 rpm, full displacement): 84 L/min

• Maximum Power (at 280 bar): 39 kW

• Maximum Torque (at 280 bar): 125 N·m

• Moment of Inertia: 0.0017 kg·m²

• Case Volume: 0.7 L

• Control Type: DFR1 – Pressure and Flow Compensator (with bypass)

• Rotation Direction: R – Right-hand (clockwise from shaft end)

• Design Series: Series 31

• Mounting Flange: 2-Hole Flange (ISO 3019-2 / SAE J744 101-2)

• Shaft Type: P – Tapered Shaft 1:5 (DIN 6885 key)

• Port Connection: 12 – SAE Flange Ports, Side, UNC Thread

• Through-Drive: N00 – No through-drive

• Seal Material: V – FKM (Fluororubber)

• Hydraulic Fluid: Mineral Oil (HL, HLP)

• Maximum Case Drain Pressure: 2 bar

• Maximum Suction Port Pressure: 10 bar

• Operating Temperature Range: 30–90°C

• Weight: Approx. 13–16 kg (configuration dependent)

Key Technical Advantages

1. DFR1 Pressure and Flow Compensator Control for System-Level Energy Savings
DFR1 control integrates pressure compensation and flow control with bypass functionality. Pressure compensation automatically reduces displacement when system pressure reaches the set point, maintaining constant pressure; flow control limits maximum flow via a throttle valve. Together, they ensure the system delivers flow only when needed, significantly reducing overflow losses and system heat generation—delivering substantial energy savings.

2. 280 bar Rated Pressure with 350 bar Peak Capacity
The A10VSO28 delivers a rated working pressure of 280 bar (4061 psi) with peak pressures up to 350 bar (5076 psi) . At 28 cm³/rev displacement with 3000 rpm maximum speed, it outputs 84 L/min maximum flow and 39 kW maximum power.

3. Excellent Suction Characteristics with Low Operating Noise
The A10VSO Series is renowned for its excellent suction characteristics, low operating noise, and long service life. Optimized suction port design and precision-manufactured rotating groups ensure stable flow output under various operating conditions, minimizing cavitation risk.

4. High Power Density with Compact Design
The A10VSO Series employs a swashplate axial piston design that delivers excellent power density within a compact footprint. Weighing only approximately 13–16 kg with a moment of inertia of 0.0017 kg·m², this pump enables rapid response in servo-controlled systems.

5. Flexible Control Options with Global Interchangeability
The A10VSO Series offers a wide variety of control options including DR, DRG, DFR, DFR1, DFLR, and ED. SAE 2-hole flange mounting (ISO 3019-2) with SAE flange port configuration ensures compatibility with major global hydraulic systems.

6. FKM Sealing Material with Broad Fluid Compatibility
This model features FKM (fluororubber) sealing material, providing excellent resistance to mineral oils and various synthetic hydraulic fluids. The DFR1 controller’s pilot pressure is accessed via a 7/16-20 UNF port, facilitating integration with external pilot control systems.

Application Areas

• Industrial Hydraulic Systems: Injection molding machines, presses, machine tool hydraulic systems

• Construction Equipment: Small road rollers, pavers, skid steer loaders

• Agricultural Machinery: Combine harvesters, tractor hydraulic systems

• Material Handling Equipment: Forklifts, stackers

• Fan Drive Systems: Hydraulic drive for radiator cooling fans

• Hydrostatic Drive Systems: Various medium-pressure applications requiring open-circuit variable pumps

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as AA10VSO28DFR1/31R-VPA12N00 with Rexroth material number R910916805. This is a Series 31 right-hand rotation configuration (clockwise from shaft end). Verify that the 2-hole SAE flange mounting specification (ISO 3019-2 / SAE J744 101-2) matches. The shaft is a tapered shaft 1:5 (DIN 6885 key)—pay special attention to tapered shaft fitting precision during installation. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation.

2. Fluid Cleanliness Control: The A10VSO Series recommends using mineral hydraulic oil (HL, HLP) conforming to DIN 51524-2. A minimum filtration rating of ISO 18/15 is recommended. Complete system flushing is mandatory before initial start-up.

3. DFR1 Controller Tuning: The DFR1 control configuration integrates pressure compensation and flow control functions. During commissioning, note the following:

   • Pressure Compensation Setting: Set the compensator pressure value based on the system’s maximum working pressure—typically recommended within rated pressure (≤ 280 bar)

   • Flow Control Setting: Set the flow valve based on maximum system flow demand to limit maximum output flow

   • Bypass Function Verification: Confirm that the bypass function properly unloads when system pressure is abnormal
     Perform initial settings under no-load conditions, then gradually increase load to target operating conditions with fine adjustments.

4. Inlet Condition Assurance: Maximum suction port pressure is 10 bar. Keep suction lines as short and straight as possible, avoiding unnecessary bends and restrictions. Ensure absolute inlet pressure does not fall below 0.8 bar. Position the reservoir above or at the same level as the pump for optimal suction conditions.

5. Initial Start-Up & Priming: Before first start-up, pre-lubricate the pump by filling the housing with clean hydraulic fluid through the case drain port. Perform a brief jog start (5–10 seconds) to confirm correct rotation direction (right-hand), and check for abnormal noise or leakage. Then正式 start the pump and run at low load for several minutes to purge air from the pump and system lines.

6. Case Drain Pressure Monitoring: Maximum case drain pressure is 2 bar. Case drain port thread is 3/4-16 UNF. During installation, ensure the drain port is positioned higher than the pump body to prevent oil starvation in the pump chamber after shutdown. Install a pressure gauge on the case drain line for real-time monitoring.