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Bosch Rexroth R986110900 (Series 52/53) is a direct OEM replacement for CAT 228-3638, engineered to maintain OEM-level hydraulic performance with reliable compatibility and repeatable output.
Technical Specifications
Flow Performance
With a 45 cc displacement, the R986110900 delivers predictable volumetric output per revolution for consistent actuator response. Flow scales linearly with speed up to 2600 rpm, supporting stable system behavior under varying demand. The 45 cc geometry is suited for controlled flow delivery where repeatability and response are required.
Efficiency & Durability
Rated for 3600 PSI nominal pressure and 4600 PSI peak pressure, the unit supports high-load operation while maintaining performance under pressure transients. Operation up to 2600 rpm enables sustained duty cycles without exceeding the specified speed limit. These limits help preserve hydraulic stability and component life within the stated operating envelope.
Installation
Designed as an OEM-fit replacement for CAT 228-3638, the R986110900 installs as a direct swap with no required modifications. Maintain standard cleanliness and alignment practices during mounting to preserve expected performance.
Features and Benefits
- 45 cc displacement: Provides a fixed, repeatable displacement per revolution for consistent flow output and predictable machine response.
- 3600 PSI nominal / 4600 PSI peak capability: Supports continuous high-pressure operation with defined peak margin for short-duration load spikes.
- 2600 rpm maximum speed rating: Enables high-speed operation within the specified limit to meet cycle-time demands while maintaining controlled hydraulic output.
Operational Information
Operate within the specified 3600 PSI nominal and 4600 PSI peak pressure limits and up to 2600 rpm to maintain stable output and reliability. Expected performance is achieved when the unit is run within these limits under standard hydraulic operating conditions.
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 parts share the same nominal pressure rating, so selection typically comes down to matching displacement (flow) needs and allowable operating speed across comparable piston pumps.
?? 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 |
|---|---|---|---|---|
| R986110900 | 45cc | 3600 PSI | 2600 | 52/53 |
| R986111536 | 100cc | 3600 PSI | 2300 | 52/53 |
| R986110632 | 74cc | 3600 PSI | 2600 | 52/53 |
| R986111199 | 110cc | 3600 PSI | 2200 | 31* |
| R986111258 | 140cc | 3600 PSI | 2000 | 31* |
Key Differences
Displacement
R986110900 is 45cc, while the comparison parts are higher displacement (74cc, 100cc, 110cc, 140cc); choose higher displacement when you need more flow per revolution than a 45cc unit can provide.
Pressure Rating
All listed comparison models show 3600 PSI pressure rating, matching the nominal pressure of R986110900; confirm your system does not require exceeding the listed nominal rating.
Speed
Maximum speed varies across the options (R986110900 and R986110632 at 2600, then 2300/2200/2000 for higher displacements), so ensure the selected unit supports your operating RPM.
Quick Selection Guide
Choose: R986110900
Because: When you need a 45cc displacement unit with 3600 PSI nominal pressure capability and up to 2600 max speed in a Series 52/53 replacement.
Choose: Higher displacement model
Because: When flow requirements exceed what a 45cc unit can deliver—consider 74cc (R986110632), 100cc (R986111536), 110cc (R986111199), or 140cc (R986111258), while also verifying the lower max-speed limits on the larger sizes.
Choose: Lower pressure model
Because: When your system operates at lower pressures; however, no lower-pressure alternatives are provided in this comparison list, so pressure-based downsizing cannot be evaluated here.
Compatibility: Verify mounting pattern, shaft configuration, and port sizes match your existing installation, and confirm displacement, pressure rating, and maximum speed align with your system requirements.
For application-specific guidance, contact our technical team.
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 R986110900, 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 across hydraulic pumps and related components
- Returns accepted within 30 days in unused, original condition
Questions? Call our specialists: (800) 823-4937 | Monday-Friday, 7 AM – 5 PM MST
Compatibility & Applications
Direct Replacement Information
This Rexroth R986110900 replaces CAT 228-3638 in closed-loop and open-circuit hydraulic drive applications.
- Hydraulic systems requiring 45cc displacement variable-flow control
- Circuits operating at 3600 PSI nominal pressure with demand-based flow regulation
- Axial piston variable pump circuits supporting hydrostatic drive, implement hydraulics, and auxiliary work functions up to 2600 max speed
Common Applications
This Bosch Rexroth R986110900 is commonly used in:
- construction and earthmoving equipment
- material handling equipment
- industrial machinery and production equipment; for similar replacement options, compare part numbers like R986111250 when displacement and interface requirements differ
Important: Verify mounting interface, shaft configuration, rotation, and porting match the existing CAT 228-3638 installation before ordering.
Bosch Rexroth R986110900 Axial Piston Variable Pump | Replaces CAT 228-3638 | 45cc | 3600 PSI
$3,033.00
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Expected delivery Oct 14 - Oct 20
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