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Bosch Rexroth R986111372 (Series 52/53) is a direct OEM replacement for CAT 459-0188, providing compatible fit and consistent hydraulic performance for 45 cc/rev systems.
Technical Specifications
Flow Performance
With a 45 cc displacement, R986111372 delivers predictable volumetric output per revolution to support stable actuator and circuit response. Flow scales linearly with shaft speed up to 2600 RPM, enabling repeatable control across the operating range. The design is intended to maintain consistent performance under rated loading conditions.
Efficiency & Durability
The unit is rated for 3600 PSI nominal pressure with 4600 PSI peak capability to handle high-load transients without exceeding published limits. Operation up to 2600 RPM supports sustained duty cycles while maintaining controlled performance. These ratings help preserve output stability and component life when operated within specified pressure and speed limits.
Installation
Engineered as an OEM replacement for CAT 459-0188, this Series 52/53 unit is intended as a direct-fit component with standard mounting compatibility. Installation is designed to require no modifications when replacing the specified OEM part.
Features and Benefits
- 45 cc displacement: Provides a defined 45 cc/rev output for predictable flow per revolution and repeatable system response.
- 3600 PSI nominal / 4600 PSI peak pressure rating: Supports continuous operation at 3600 PSI with capacity for 4600 PSI peak events to manage short-duration pressure spikes.
- 2600 RPM maximum speed capability: Enables flow delivery across a wide speed range up to 2600 RPM for consistent performance under varying operating speeds.
Operational Information
Operate within the published limits of 3600 PSI nominal (4600 PSI peak) and up to 2600 RPM maximum speed to maintain stable hydraulic output. With a component weight of 40, handling and mounting should follow standard practices appropriate for the installed location and system configuration.
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 |
Product Selection Guide
These Series 52/53 components share the same nominal pressure (3600 PSI) and max speed (2600), so selection is primarily driven by displacement (flow requirement) and confirming installation fit. If you’re comparing options across our broader hydraulic pumps lineup, displacement and control configuration are often the most important first filters.
?? 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 |
|---|---|---|---|---|
| R986111372 | 45cc | 3600 PSI | 2600 | 52/53 |
| R986110056 | 74cc | 3600 PSI | 2600 | 52/53 |
| R986110674 | 63cc | 3600 PSI | 2600 | 53 |
| R986110072 | 74cc | 3600 PSI | 2600 | 52/53 |
| R986110073 | 71cc | 3600 PSI | 2600 | 52/53 |
Key Differences
Displacement
R986111372 is 45cc, while the comparison parts range from 63cc to 74cc (and 71cc), which typically indicates higher potential flow per revolution; choose higher displacement when your system requires more flow at the same speed.
Pressure Rating
All listed models show 3600 PSI nominal pressure; only R986111372 includes a stated peak pressure of 4600 PSI, so confirm peak-pressure requirements against the specific part’s rating where applicable.
Speed
Max speed is listed as 2600 for all compared part numbers, so speed is not a differentiator among these options based on the provided data.
Quick Selection Guide
Choose: R986111372
Because: When you need a 45cc displacement unit in Series 52/53 with 3600 PSI nominal pressure, 4600 PSI peak pressure, and 2600 max speed.
Choose: Higher displacement model
Because: When flow requirements exceed what a 45cc displacement unit can provide at the same operating speed (consider 63cc, 71cc, or 74cc options listed).
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 more options in this style of design, browse our piston pumps selection.
For application-specific guidance, contact our technical team.
Compatibility & Applications
Direct Replacement Information
This Bosch Rexroth R986111372 axial piston variable pump replaces CAT 459-0188 in high-pressure mobile and industrial hydraulic system applications.
- Closed-loop or open-circuit systems requiring 45cc displacement variable flow
- Hydraulic circuits operating at 3600 PSI nominal pressure
- Systems requiring up to 2600 max pump speed for engine- or motor-driven power units
- Servo/variable-displacement pump applications supporting load-sensing, pressure-compensated, or proportional control architectures (as configured)
Common Applications
This Bosch Rexroth R986111372 is commonly used in:
- construction and earthmoving equipment hydraulic power
- material handling equipment (telehandlers, loaders, lift systems)
- industrial hydraulic power units for presses, fixtures, and actuation
- machine tool and process machinery hydraulics
Important: Confirm the mounting interface, shaft type, rotation, and porting/control configuration match the existing CAT 459-0188 installation for proper system integration. If you’re cross-referencing adjacent configurations, you may also want to compare to R986111250 where mounting and control options overlap.
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 R986111372, 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
Bosch Rexroth R986111372 Axial Piston Variable Pump | Replaces CAT 459-0188 | 45cc | 3600 PSI
$3,033.00
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Expected delivery Oct 14 - Oct 20
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