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Bosch Rexroth R986110081 (Series 52/53) is a direct OEM replacement for CAT 190-2279, delivering matched fit and consistent hydraulic performance for reliable system operation.
Technical Specifications
Flow Performance
With a 71 cc displacement, the R986110081 supports strong volumetric output per revolution for responsive actuator and circuit performance. Stable displacement behavior helps maintain predictable flow delivery across the operating range, supporting consistent machine function.
Efficiency & Durability
Rated for 3600 PSI nominal pressure and 4600 PSI peak pressure, this unit is built to sustain high-load hydraulic demands while maintaining performance. A maximum speed of 2600 RPM supports fast cycling capability without sacrificing pressure handling within the stated limits.
Installation
Designed as an OEM-fit replacement for CAT 190-2279, the R986110081 installs as a direct replacement with no modifications required. Series 52/53 configuration supports straightforward integration into the existing mounting and hydraulic connections.
Features and Benefits
- 71 cc displacement: Delivers consistent volume per revolution to support predictable flow response and controllability.
- 3600 PSI nominal / 4600 PSI peak pressure capability: Handles high working pressure and short-duration pressure spikes within rated limits to maintain system output under load.
- 2600 RPM maximum speed: Supports higher operating speeds for faster hydraulic response while staying within specified rotational limits.
Operational Information
Operate within the stated pressure ratings (3600 PSI nominal, 4600 PSI peak) and up to 2600 RPM maximum speed to maintain consistent performance. The 48.5 weight reflects a robust build intended for reliable service in demanding hydraulic duty cycles.
Quality Assurance
Manufactured to Bosch Rexroth’s stringent quality standards with rigorous testing throughout the production process.
| Weight | 48.5 lbs |
|---|---|
| Dimensions | 15 × 15 × 15 in |
| Manufacturer | Bosch Rexroth |
| Pumps Max Pressure | 3600 PSI |
| Pumps Rated Speed | 2600 |
| Pumps Max Speed | 2600 |
| Pumps Displacement | 71cc |
| Pump Continuous Pressure | 3600 PSI |
| Pump Intermittent Pressure | 4600 PSI |
Compatibility & Applications
Direct Replacement Information
This Bosch Rexroth R986110081 replaces CAT 190-2279 in closed-loop and open-circuit hydrostatic drive applications.
- Hydraulic systems requiring 71cc displacement variable-flow control
- Circuits operating around 3600 PSI nominal pressure (high-pressure hydrostatic and work-function circuits)
- Axial piston variable pump applications up to 2600 max speed, including load-sensing, pressure-compensated, and hydrostatic transmission circuits
Common Applications
This Bosch Rexroth R986110081 is commonly used in:
- construction and earthmoving equipment hydraulic systems
- material handling machines (telehandlers, forklifts, lift systems)
- industrial machinery and production equipment hydraulic pumps and hydraulic power units
Important: Confirm mounting interface, shaft type, rotation, and port configuration match the existing CAT 190-2279 installation before replacement.
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 R986110081, 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, including selecting compatible piston pumps for your circuit
- 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 nominal pressure (3600 PSI) and max speed (2600), so selection typically comes down to matching displacement (flow) to your system requirements.
?? 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 |
|---|---|---|---|---|
| R986110081 | 71cc | 3600 PSI | 2600 | 52/53 |
| R986111395 | 60cc | 3600 PSI | 2600 | 52 |
| R986111581 | 60cc | 3600 PSI | 2600 | 52 |
| R986110042 | 71cc | 3600 PSI | 2600 | 52/53 |
| R986110804 | 74cc | 3600 PSI | 2600 | 52/53 |
Key Differences
Displacement
R986110081 is 71cc; comparable options include 60cc (R986111395, R986111581), 71cc (R986110042), and 74cc (R986110804). Choose lower displacement when you need less flow per revolution, match 71cc when replacing an existing 71cc unit, or step up to 74cc when you need slightly more flow at the same speed.
Pressure Rating
All listed comparison models are rated at 3600 PSI nominal pressure; R986110081 also specifies a 4600 PSI peak pressure. Confirm your system’s required peak pressure capability aligns with the replacement part’s ratings.
Speed
Max speed is the same (2600) across the listed models, so speed is not a primary differentiator here; focus on displacement and confirming pressure requirements.
Quick Selection Guide
Choose: R986110081
Because: When you need a Series 52/53 unit with 71cc displacement, 3600 PSI nominal pressure, and 2600 max speed, and your system requires up to 4600 PSI peak pressure.
Choose: Higher displacement model
Because: When you need more flow per revolution than 71cc provides at the same 2600 max speed (e.g., moving from 71cc to the 74cc option R986110804).
Choose: Lower displacement model
Because: When your system requires less flow per revolution than 71cc provides (e.g., selecting a 60cc option such as R986111395 or R986111581) while maintaining the same 3600 PSI nominal pressure and 2600 max speed.
Compatibility: Verify mounting pattern, shaft configuration, and port sizes match your existing installation.
For application-specific guidance, contact our technical team. If you’re comparing similar Series 52 options, you may also reference R986111250 for additional cross-checking.
Bosch Rexroth R986110081 Axial Piston Variable Pump | Replaces CAT 190-2279 | 71cc | 3600 PSI
$4,161.00
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Expected delivery Oct 13 - Oct 19
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