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Bosch Rexroth R986111389 (Series 52/53) is a direct OEM replacement for CAT 4Z-5811, built to restore reliable hydraulic performance with OEM-fit compatibility and consistent output.
Technical Specifications
Flow Performance
With a 71 cc displacement, the R986111389 delivers strong per-revolution output suited for high-demand hydraulic circuits. Stable flow delivery supports predictable actuator and motor response across operating conditions, helping maintain consistent machine performance.
Efficiency & Durability
Rated for 3600 PSI nominal pressure and 4600 PSI peak pressure, this unit is designed to sustain performance under high-load events without sacrificing control stability. A maximum speed of 2600 RPM supports responsive operation while maintaining dependable performance in continuous duty cycles.
Installation
Designed as an OEM replacement for CAT 4Z-5811, the R986111389 installs as a direct fit with standard mounting and interface compatibility. No modifications are required when replacing the original component in the same configuration.
Features and Benefits
- 71 cc displacement: Provides high per-revolution output to support strong hydraulic response and consistent flow delivery.
- 3600 PSI nominal / 4600 PSI peak pressure capability: Handles high working pressures and short-duration peak events to maintain performance under heavy load.
- 2600 RPM maximum operating speed: Supports fast cycle response and stable operation at higher rotational speeds.
Operational Information
Operate within the rated limits of 3600 PSI nominal pressure, 4600 PSI peak pressure, and up to 2600 RPM maximum speed to maintain consistent performance. The 48.5 lb unit is intended for reliable service in demanding hydraulic systems when used within these operating constraints.
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
The Rexroth R986111389 axial piston variable pump replaces CAT 4Z-5811 in high-pressure mobile and industrial hydraulic pumps system applications.
- Closed- or open-circuit hydraulic systems requiring 71cc displacement variable flow
- Circuits operating at 3600 PSI nominal system pressure
- Mobile hydraulic pump drives up to 2600 max speed for implement, steering, fan, or auxiliary functions
Common Applications
This Bosch Rexroth R986111389 is commonly used in:
- mobile hydraulics
- construction equipment
- agricultural machinery
- material handling equipment
- industrial hydraulic power units
Important: Confirm mounting interface, shaft type, rotation, control configuration, and porting match the existing CAT 4Z-5811 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 R986111389, 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
Within the 52/53 series, R986111389 is the highest-displacement option in this comparison set, while pressure ratings are consistent and speed varies slightly by model.
?? 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 |
|---|---|---|---|---|
| R986111389 | 71cc | 3600 PSI | 2600 | 52/53 |
| R986110672 | 60cc | 3600 PSI | 2600 | 52 |
| R986111479 | 28cc | 3600 PSI | 3000 | 52/53 |
| R986111220 | 60cc | 3600 PSI | 2600 | 52 |
| R986111433 | 45cc | 3600 PSI | 2600 | 52/53 |
Key Differences
Displacement
R986111389 provides 71cc displacement versus 60cc (R986110672, R986111220), 45cc (R986111433), and 28cc (R986111479); choose higher displacement when you need more flow per revolution, and lower displacement when you want finer control or reduced flow demand.
Pressure Rating
All compared models list 3600 PSI nominal pressure; R986111389 additionally specifies a 4600 PSI peak rating, so confirm your duty cycle and peak events align with the component’s stated limits.
Speed
Most options list 2600 max speed (including R986111389), while R986111479 lists 3000; select based on your prime mover speed range and required operating RPM.
Quick Selection Guide
Choose: R986111389
Because: When you need 71cc displacement with 3600 PSI nominal pressure, 4600 PSI peak capability, and up to 2600 max speed in a 52/53 series component.
Choose: R986110672 or R986111220
Because: When 60cc displacement is sufficient and you want to stay at 3600 PSI nominal pressure with 2600 max speed.
Choose: R986111479
Because: When a lower 28cc displacement is appropriate and you require a higher listed max speed (3000) while maintaining 3600 PSI nominal pressure.
Compatibility: Verify mounting pattern, shaft configuration, and port sizes match your existing installation. For similar piston pumps and related options, browse our catalog or contact our team.
For application-specific guidance, contact our technical team.
Bosch Rexroth R986111389 Axial Piston Variable Pump | Replaces CAT 4Z-5811 | 71cc | 3600 PSI
$4,233.00
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Expected delivery Oct 14 - Oct 20
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