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Bosch Rexroth R986110122 is a Series 52/53 hydraulic unit engineered as an OEM replacement for CAT 204-2578, delivering reliable performance and direct-fit compatibility in demanding hydraulic systems.
Technical Specifications
Flow Performance
With a 45 cc displacement, R986110122 provides consistent volumetric output per revolution for predictable actuator and drive response. Flow scales linearly with speed up to 2600 RPM, supporting stable system control across the operating range.
Efficiency & Durability
Rated for 3600 PSI nominal pressure with 4600 PSI peak capability, the unit is built to maintain performance under high-load pressure cycles. The 2600 RPM maximum speed supports sustained operation while maintaining consistent hydraulic output within the specified limits.
Installation
Designed as a direct OEM replacement for CAT 204-2578 in the Series 52/53 pattern, it is intended to install without modifications. Ensure system plumbing and mounting interfaces match the existing configuration for proper fit and alignment.
Features and Benefits
- 45 cc displacement: Delivers a fixed, repeatable displacement per revolution for predictable flow and controllable machine response.
- 3600 PSI nominal / 4600 PSI peak pressure rating: Supports high working pressures with defined peak capacity for transient load events within system limits.
- 2600 RPM maximum speed capability: Enables higher operating speed potential for increased flow throughput when system design requires it.
Operational Information
Operate within the specified nominal pressure of 3600 PSI, peak pressure of 4600 PSI, and maximum speed of 2600 RPM to maintain stable performance. The 40 lb unit is intended for continuous hydraulic duty where consistent output and mechanical reliability are required.
Quality Assurance
Manufactured to Bosch Rexroth’s stringent quality standards with rigorous testing throughout the production process.
| Weight | 40.0 lbs |
|---|---|
| Dimensions | 10 × 10 × 10 in |
| Manufacturer | Bosch Rexroth |
| Pumps Max Pressure | 3600 PSI |
| Pumps Rated Speed | 2600 |
| Pumps Max Speed | 2600 |
| Pumps Displacement | 45cc |
| Pump Continuous Pressure | 3600 PSI |
| Pump Intermittent Pressure | 4600 PSI |
Purchasing Information
Availability & Delivery
Most Bosch Rexroth replacement parts ship within 1-3 business days. Custom or special-order items may require additional lead time.
For current availability on R986110122, call (800) 823-4937.
Warranty & Protection
- Standard Warranty: 18 months from date of shipment or 12 months from date placed in service, whichever occurs first
- Coverage: Defects in material and workmanship under normal operating conditions
- Remedy: Repair, replacement, or credit at seller’s option
- Conditions: Product must be used per manufacturer specifications and documentation
Ordering Options
Contact our sales team for pricing and availability. Volume discounts may be available for larger orders.
We accept purchase orders from established accounts. New customers may require prepayment or credit approval.
Support & Documentation
- Technical specifications and datasheets available upon request
- Cross-reference assistance for OEM part identification
- Application engineering support for system integration
- Returns accepted within 30 days in unused, original condition
Questions? Call our specialists: (800) 823-4937 | Monday-Friday, 7 AM – 5 PM MST
Product Selection Guide
These Series 52/53 components share the same 3600 PSI nominal pressure class, with selection primarily driven by the displacement (flow per revolution) and any maximum speed differences.
?? Important: The specifications shown are for reference and comparison purposes. Always verify specifications with the official manufacturer documentation or contact our technical team before ordering to ensure compatibility with your application.
| Part Number | Displacement | Pressure | Max Speed | Series |
|---|---|---|---|---|
| R986110122 | 45cc | 3600 PSI | 2600 | 52/53 |
| R986110720 | 63cc | 3600 PSI | 2600 | 53 |
| R986111484 | 85cc | 3600 PSI | 2500 | 52/53 |
| R986110574 | 100cc | 3600 PSI | 2300 | 52/53 |
| R986111536 | 100cc | 3600 PSI | 2300 | 52/53 |
Key Differences
Displacement
R986110122 is 45cc, while the comparison parts step up to 63cc, 85cc, and 100cc; higher displacement increases flow per revolution and is typically chosen when you need more output without increasing speed.
Pressure Rating
All listed comparison models are rated at 3600 PSI nominal pressure; R986110122 also lists a 4600 PSI peak pressure, so confirm your system’s peak/relief settings align with the component’s allowable peak pressure.
Speed
Maximum speed is 2600 for R986110122 and the 63cc option, while the 85cc and 100cc options are lower (2500 and 2300), which can matter if your drive speed is near the upper limit.
Quick Selection Guide
Choose: R986110122
Because: When you need a 45cc displacement unit with 3600 PSI nominal pressure, 4600 PSI peak capability, and up to 2600 max speed in a Series 52/53 configuration.
Choose: Higher displacement model
Because: When your required flow per revolution exceeds 45cc—consider R986110720 (63cc), R986111484 (85cc), or R986110574/R986111536 (100cc), while ensuring your operating speed stays within the listed max speed for that model.
Choose: Lower pressure model
Because: When system operates at lower pressures for cost savings.
Compatibility: Verify mounting pattern, shaft configuration, and port sizes match your existing installation.
For application-specific guidance, contact our technical team.
Compatibility & Applications
Direct Replacement Information
This Rexroth R986110122 replaces CAT 204-2578 in high-pressure mobile hydraulic and heavy equipment pump-drive applications.
- Closed-loop or open-circuit hydraulic systems requiring 45cc variable displacement flow control
- Hydraulic circuits operating at 3600 PSI nominal pressure with loads suited to axial piston variable pump control
- Pump-drive applications up to 2600 max speed for implement, propulsion, or auxiliary hydraulic functions
Common Applications
This Bosch Rexroth R986110122 is commonly used in construction and industrial hydraulic pumps circuits such as:
- construction and earthmoving equipment
- mining and quarry machinery
- forestry equipment
- material handling and industrial mobile machinery
Important: Confirm mounting interface, shaft configuration, rotation, and porting match the existing CAT 204-2578 installation and system plumbing.
Bosch Rexroth R986110122 Axial Piston Variable Pump | Replaces CAT 204-2578 | 45cc | 3600 PSI
$3,033.00
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Expected delivery Oct 08 - Oct 14
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