A10VO28DR52R-VSC12K68 Rexroth Replacement Piston Pump | POOCCA
Product Overview
The A10VO28DR52R-VSC12K68 belongs to the POOCCA replacement line for Rexroth A10VO 52 series open-circuit axial piston pumps. It uses a swash-plate design with pressure compensator (DR control) to deliver flow on demand, reducing excess heat generation and lowering power consumption in mobile machinery and industrial hydraulic power units.
This pump is built for open-circuit hydrostatic transmissions in mobile equipment. The DR pressure control maintains constant system pressure regardless of flow demand, making it ideal for loader cranes, concrete pumps, forestry machinery, and auxiliary hydraulic circuits where load-sensing is not required.
Ordering Code Breakdown
| Code | Meaning |
|---|---|
| A10VO | Series: axial piston swash-plate pump, open circuit |
| 28 | Size NG28 — displacement 28 cm³/rev |
| DR | Pressure compensator control (DR = pressure control, constant pressure) |
| 52R | 52 series, clockwise rotation viewed from shaft end |
| V | FKM (Viton) shaft and housing seals |
| S | Splined shaft |
| C | SAE 2-hole mounting flange |
| 12 | SAE side port flange configuration |
| K68 | Additional mounting / port configuration code |
Product Features
1. Pressure Compensator Control (DR)
The DR control adjusts pump displacement automatically to maintain preset system pressure. When actuator dead-end is reached, the pump strokes to near zero displacement, saving energy and reducing heat buildup compared to fixed-displacement systems.
2. High Pressure Capability
Nominal pressure of 250 bar with peak pressure up to 315 bar allows use in high-pressure mobile hydraulic circuits without oversizing the pump.
3. High Volumetric Efficiency
Swash-plate design with hydrostatic bearings maintains high volumetric and total efficiency across a wide speed range, reducing energy waste in partial-load conditions.
4. Wide Speed Range
Rated speed of 3000 rpm with maximum speed up to 3600 rpm, the pump adapts to various drive configurations including PTO-driven mobile equipment and electric motor power units.
5. Compact and Lightweight
At approximately 14 kg, the NG28 size fits tight installation spaces in mobile equipment where weight and envelope matter.
6. Flexible System Integration
SAE 2-hole flange mounting, SAE J518 ports, and through-drive capability allow tandem mounting with auxiliary pumps for complex hydraulic systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | A10VO28DR52R-VSC12K68 |
| Pump Type | Axial piston pump, swash-plate |
| Series | A10VO 52 series |
| Displacement | 28 cm³/rev |
| Pressure | 250 bar nominal / 315 bar peak |
| Max Flow | 84 L/min |
| Speed Range | 3000 – 3600 rpm |
| Rotation | Clockwise |
| Mounting | SAE flange |
| Shaft | Splined shaft |
| Seals | FKM (Viton) |
| Weight | Approx. 14 kg |
| Hydraulic Fluid | Mineral oil / HFC / HFD compatible |
| Structure | Variable displacement, open circuit |
Main Components and Working Principle
- Drive Shaft — splined input shaft transmits torque from the engine or electric motor
- Cylinder Block — houses the pistons and rotates with the drive shaft
- Pistons and Piston Shoes — arrayed around the cylinder block, reciprocate against the swash plate
- Swash Plate — fixed-angle plate that converts rotational motion into reciprocating piston motion
- DR Pressure Compensator — adjusts swash plate angle to maintain set system pressure
- Pump Housing — aluminum housing containing the rotating group and port plate
- Suction Port (S) and Pressure Port (B) — fluid inlet and outlet connections
The drive shaft rotates the cylinder block via a splined coupling. Pistons arrayed in the cylinder block push against a fixed-angle swash plate. As the block rotates, each piston reciprocates along its bore: the intake stroke draws fluid through the suction port, and the discharge stroke pushes fluid out the pressure port. The DR compensator adjusts swash-plate angle to maintain set system pressure, reducing displacement when demand drops.
Product Applications
The A10VO28DR52R-VSC12K68 is widely used in various mobile and industrial hydraulic systems, including:
- Mobile construction machinery — loader cranes, telehandlers, aerial work platforms
- Agricultural equipment — tractors, combines, forestry harvesters
- Concrete pumps and truck-mounted booms
- Hydraulic power units in industrial presses and machine tools
- Marine and offshore auxiliary hydraulic systems
- Refuse trucks and municipal vehicle hydraulics
Due to its high pressure capability and compact design, this pump is especially suitable for mobile hydraulic systems requiring variable flow on demand.
Why Choose POOCCA?
POOCCA has manufactured hydraulic pumps since 2006, supplying 1600+ hydraulic pump and motor models to customers in 75+ countries. Every A10VO28 replacement pump undergoes bench testing before shipment, with 99.9% outgoing inspection rate. Units are CE, RoHS, and ISO 9001 certified, backed by a 12-month warranty.
As a competent manufacturer of diversified Hydraulic Pumps, we are thriving across the globe and we are happy to share the overwhelming positive feedback we have received from satisfied customers across the globe. Our products have won accolades for their superior quality and performance. Consistent positive reviews reflect the trust and satisfaction customers experience after making a purchase.
Join our customers and experience the excellence that sets us apart. Your trust is our motivation and we look forward to exceeding your expectations with our POOCCA hydraulic pump solutions.
