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Bosch Rexroth R986110056 (Series 52/53) is a reliable OEM replacement for CAT 185-5918, delivering compatible fit and consistent 74 cc displacement performance for dependable hydraulic operation.
Technical Specifications
Flow Performance
With a 74 cc displacement, the R986110056 provides predictable output per revolution to support stable system response and repeatable machine motion. Its standard Rexroth design targets consistent volumetric performance over time, helping maintain reliable flow characteristics under normal operating conditions.
Efficiency & Durability
Rated for 3600 PSI nominal pressure and 4600 PSI peak pressure, this unit is built to sustain performance across demanding duty cycles without frequent re-tuning. A maximum speed capability of 2600 RPM supports reliable operation across typical engine- or motor-driven hydraulic speeds while maintaining consistent output behavior.
Installation
Designed as a direct OEM replacement for CAT 185-5918, the R986110056 installs for OEM fit and alignment without modifications. Standard replacement geometry supports straightforward integration into existing hydraulic layouts.
Features and Benefits
- 74 cc displacement: Delivers consistent output per revolution for predictable actuator speed and stable system response.
- 3600 PSI nominal / 4600 PSI peak pressure rating: Supports reliable operation under high load while accommodating short-duration pressure spikes up to 4600 PSI.
- 2600 RPM maximum speed capability: Maintains dependable performance across a broad operating speed range up to 2600 RPM for consistent hydraulic output.
Operational Information
Operate within the stated nominal pressure of 3600 PSI, allowing peak events up to 4600 PSI, and keep speed at or below 2600 RPM to support long-term reliability. System cleanliness and stable operating conditions help maintain consistent performance in standard hydraulic service.
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 | 74cc |
| 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 R986110056, 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 are commonly evaluated alongside other piston pumps with a 3600 PSI nominal pressure rating, so selection is primarily driven by displacement (flow) needs and allowable speed for your duty cycle.
?? 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 |
|---|---|---|---|---|
| R986110056 | 74cc | 3600 PSI | 2600 | 52/53 |
| R986111115 | 100cc | 3600 PSI | 2300 | 52/53 |
| R986110078 | 45cc | 3600 PSI | 2600 | 52/53 |
| R986111332 | 63cc | 3600 PSI | 2600 | 53 |
| R986110047 | 60cc | 3600 PSI | 2600 | 52 |
Key Differences
Displacement
R986110056 is 74cc; choose higher displacement (e.g., 100cc on R986111115) when you need more flow per revolution, or lower displacement (45cc on R986110078, 60cc on R986110047, 63cc on R986111332) when you want lower flow or finer control at a given speed.
Pressure Rating
All compared models list 3600 PSI pressure, while R986110056 also specifies a 4600 PSI peak rating; confirm your system’s peak events align with the component’s allowable peak pressure.
Speed
Most options are listed at 2600 max speed (R986110056, R986110078, R986111332, R986110047), while the 100cc option (R986111115) is listed at 2300, which may influence selection where higher RPM capability is required.
Quick Selection Guide
Choose: R986110056
Because: When you need a 74cc displacement with 3600 PSI nominal pressure, 4600 PSI peak capability, and up to 2600 max speed in a Series 52/53 replacement.
Choose: Higher displacement model
Because: When required flow per revolution is higher than 74cc (e.g., 100cc on R986111115) and your operating speed can align with the listed 2300 max speed.
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
The Bosch Rexroth R986110056 axial piston variable pump replaces CAT 185-5918 in high-pressure mobile hydraulic pumps system applications.
- Mobile hydraulic systems requiring 74cc/rev variable displacement pump output
- Circuits operating at 3600 PSI nominal pressure (up to system relief settings) with speeds up to 2600 RPM
- Closed-loop or open-loop axial piston variable pump circuits for propulsion drives, implement hydraulics, and auxiliary functions
Common Applications
This Bosch Rexroth R986110056 is commonly used in:
- mobile hydraulics
- construction equipment
- earthmoving and material handling machines
- agricultural machinery
- forestry equipment
Important: Confirm mounting interface, shaft type, rotation, control configuration, and port locations match the existing CAT 185-5918 installation before installation.
If you’re comparing similar replacements for other equipment platforms, you may also reference R986111250 as another Bosch Rexroth axial piston pump option.
Bosch Rexroth R986110056 Axial Piston Variable Pump | Replaces CAT 185-5918 | 74cc | 3600 PSI
$5,743.00
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Expected delivery Oct 09 - Oct 15
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