ناقل الحركة النهائي travel motor 22N-60-51300 لـ حفارة صغيرة Komatsu PC45MR-5 PC50MR-5 PC55MR-5

OEM Final Drive Travel Motor for Komatsu PC45MR-5 PC50MR-5 PC55MR-5 | Part No. 22N-60-51300

1. Product Overview
The 22N-60-51300 (Manufacturer code: FU1BB25159640A) is a precision-integrated propulsion unit featuring a variable displacement axial piston motor and a heavy-duty planetary reduction gearbox. Designed for Komatsu's 4.5 to 5.5-ton Dash-5 series, this drive is optimized for the increased hydraulic pressures of modern machines. With 13 years of expertise in Komatsu hydraulic transmissions, we ensure these units deliver the high tractive effort and synchronized tracking required for the advanced CLSS (Closed-center Load Sensing System) found in the MR-5 chassis.

2. Comprehensive OEM Part Number Compatibility
This assembly is a direct "bolt-on" replacement for the following Komatsu factory part numbers and manufacturer specifications:

Komatsu Part Number: 22N-60-51300 / 22N6051300

Manufacturer Model: FU1BB25159640A

Alternative Refs: 22N-60-51100, 22N-60-51101

Machine Fitment:

Komatsu PC45MR-5

Komatsu PC50MR-5

Komatsu PC55MR-5

(Also compatible with select PC45MR-3 and PC55MR-3 late-model versions; please verify via serial number).

3. Technical Specifications & Performance
Motor Type: Two-speed variable displacement axial piston motor with integrated high/low speed switching.

Gearbox Architecture: Multi-stage planetary reduction using induction-hardened alloy gears for maximum fatigue resistance.

Max Working Pressure: Rated for continuous high-pressure operation (up to 27.5 MPa / 275 bar) to maintain original factory breakout and tracking force.

Sealing: Equipped with premium "Duo-Cone" mechanical floating seals to prevent gear oil leaks and protect against mud and water ingress.

Braking: Integrated spring-applied, hydraulic-release wet disc parking brake for safe holding on steep inclines.

4. Why Partner With a 13-Year Industry Expert?
Dash-5 Performance Calibration: We understand the specific hydraulic balance of the MR-5 series. Our drives are calibrated to ensure the motor displacement matches your pump's output, eliminating tracking "drift."

100% Bench Testing: Every unit undergoes a rigorous performance test. We verify volumetric efficiency, brake holding torque, and smooth 2-speed shifting before the unit is crated.

Factory-Direct Value: Access Original New or Premium OEM-spec units at competitive wholesale prices, bypassing the high markups of local dealerships.

Global Rapid Logistics: Units are secured in reinforced, shock-proof export crates. Delivery via DHL, FedEx, or UPS typically arrives in 3 to 7 business days.

5. Critical Installation & Maintenance Protocol
Gear Oil Commissioning: Final drives are shipped without gear oil. You must fill the planetary gearbox with SAE 80W-90 gear oil to the correct level before operation.

Case Drain Integrity: Ensure the case drain line is clear and connected to the correct port. Excessive backpressure in the motor case is the leading cause of shaft seal failure.

System Decontamination: If the previous motor failed mechanically, you must flush the hydraulic tank and lines. Residual metal shavings will destroy a new motor almost immediately.

Air Purging: After installation, lift the track and run the motor at low speed for several minutes to remove air from the hydraulic circuit before applying full load.

6. Ordering & Professional Support
Fitment Verification: To ensure 100% accuracy, please provide your Machine Serial Number and the number of sprocket mounting holes (commonly 9 or 12).

Instant Quote: Contact us today for up-to-date pricing, tiered quality options, and current stock availability.

Technical Guidance: Our expert team is available 24/7 to assist with installation procedures, hydraulic pressure settings, and troubleshooting.