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Bosch Rexroth R986110079 (Series 52/53) is an OEM replacement for CAT 340-2121, built for reliable compatibility and consistent hydraulic performance in demanding duty cycles.
Technical Specifications
Flow Performance
With a 100 cc displacement, the R986110079 delivers stable, repeatable output per revolution to support predictable actuator and motor response. Performance is maintained across a wide operating range up to 2300 max speed, supporting responsive system behavior under changing load conditions.
Efficiency & Durability
Designed to operate at 3600 PSI nominal pressure with 4600 PSI peak capability, this unit maintains performance where high-pressure stability is required. The Series 52/53 design supports sustained operation up to 2300 max speed, helping preserve output consistency during continuous, high-demand cycles.
Installation
Engineered as a direct replacement for CAT 340-2121, the R986110079 is intended to match OEM fit and interface requirements. It installs as an OEM-equivalent unit without modifications when replacing the original component.
Features and Benefits
- 100 cc displacement: Provides consistent volume per revolution for predictable hydraulic response and repeatable machine control.
- 3600 PSI nominal / 4600 PSI peak pressure capability: Supports high-load operation with defined pressure capacity for demanding work cycles.
- 2300 max speed (Series 52/53): Enables responsive operation across higher speed ranges while maintaining stable output characteristics.
Operational Information
Operate within the stated limits of 3600 PSI nominal (4600 PSI peak) and up to 2300 max speed to maintain expected performance. Component mass is 75, supporting stable installation and service handling consistent with OEM replacement requirements.
Quality Assurance
Manufactured to Bosch Rexroth’s stringent quality standards with rigorous testing throughout the production process.
| Weight | 75.0 lbs |
|---|---|
| Dimensions | 20 × 20 × 15 in |
| Manufacturer | Bosch Rexroth |
| Pumps Max Pressure | 3600 PSI |
| Pumps Rated Speed | 2300 |
| Pumps Max Speed | 2300 |
| Pumps Displacement | 100cc |
| 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 R986110079, 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 share the same 3600 PSI nominal pressure class, so selection primarily comes down to matching displacement (flow) and allowable speed 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 |
|---|---|---|---|---|
| R986110079 | 100cc | 3600 PSI | 2300 | 52/53 |
| R986110939 | 71cc | 3600 PSI | 2600 | 52/53 |
| R986110092 | 28cc | 3600 PSI | 3000 | 52/53 |
| R986110997 | 110cc | 3600 PSI | 2200 | 31* |
| R986111452 | 140cc | 3600 PSI | 2000 | 31* |
Key Differences
Displacement
R986110079 is 100cc; smaller options (R986110092 at 28cc, R986110939 at 71cc) suit lower flow requirements, while larger options (R986110997 at 110cc, R986111452 at 140cc) are better when higher flow is needed at similar pressure rating.
Pressure Rating
All listed comparison models are rated at 3600 PSI nominal; R986110079 additionally lists a 4600 PSI peak rating, so verify your duty cycle and peak events align with the ratings required for your system.
Speed
Maximum speed varies across the group (R986110079: 2300; R986110092: 3000; R986110939: 2600; R986110997: 2200; R986111452: 2000), so choose a model that meets or exceeds your operating speed without exceeding its limit.
Quick Selection Guide
Choose: R986110079
Because: When you need a 100cc displacement unit with 3600 PSI nominal capability, 4600 PSI peak rating, and up to 2300 max speed to match the existing Series 52/53 specification.
Choose: Higher displacement model
Because: When flow requirements exceed a 100cc displacement at the same 3600 PSI nominal class—consider R986110997 (110cc) or R986111452 (140cc), while confirming their max speed limits (2200 and 2000 respectively) meet your operating speed.
Choose: Lower pressure model
Because: Not applicable for this comparison set, since all listed similar products are specified at 3600 PSI nominal; instead, select by displacement and max speed to fit your system.
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
This Rexroth R986110079 replaces CAT 340-2121 in mobile hydraulic closed-loop and open-circuit pump applications.
- Hydraulic systems requiring 100cc displacement variable flow control (see our full range of hydraulic pumps for related options)
- Circuits operating at 3600 PSI nominal pressure with variable displacement demand
- Mobile equipment hydraulic circuits up to 2300 max pump speed, including implement, auxiliary, and steering functions where applicable
Common Applications
This Bosch Rexroth R986110079 is commonly used in:
- mobile hydraulics
- construction equipment
- earthmoving and material handling machinery
- agricultural machinery
- forestry equipment
Important: Verify mounting interface, shaft configuration, rotation, control type, and port locations match the existing CAT 340-2121 installation for proper system compatibility. If you are comparing similar piston pumps, confirm series, control option, and duty cycle requirements before ordering.
Bosch Rexroth R986110079 Axial Piston Variable Pump | Replaces CAT 340-2121 | 100cc | 3600 PSI
$5,289.00
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Expected delivery Oct 13 - Oct 19
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