Transmissão final 20/925564 para mini-escavadora JCB 8055 8065 ZTS RTS

1. Product Identification
Component: Complete Final Drive Assembly (Hydraulic Travel Motor with Planetary Gearbox)

Machine Compatibility:

JCB 8055 ZTS (Zero Tail Swing)

JCB 8055 RTS (Reduced Tail Swing)

JCB 8065 ZTS (Zero Tail Swing)

JCB 8065 RTS Mini Excavators

Condition: Premium Aftermarket New (Complete Drop-In Unit)

System Function: Converts high-pressure hydraulic oil flow into high mechanical torque to drive track chains and propel 5.5 to 6.5-ton mini excavators.

2. Technical Specifications
Motor Type: Variable Displacement Axial Piston Travel Motor

Reducer Type: Heavy-Duty Multi-Stage Planetary Gear Reduction System

Performance Parameters: Torque and speed ratios calibrated specifically to JCB 8055/8065 hydraulic pump displacement and operating pressure profiles.

Integrated Control Network: Features an integrated multi-disc wet dynamic parking brake, automatic high/low two-speed shift control, and shock-relief protection.

Mounting Interface: Machined drive sprocket bolt circle and frame mounting flange engineered for direct match to JCB 8055 and 8065 undercarriage frames.

3. Critical Installation Requirements
Travel Motor Housing Priming (Mandatory)
Before operating the machine or driving the tracks, pre-fill the axial piston travel motor casing with clean, fresh hydraulic fluid through the highest case drain port. Running an axial piston motor dry—even for a few track turns—will score the swash plate and piston slippers, causing immediate loss of pressure.

Verify Case Drain Line Backpressure
Inspect the low-pressure case drain hose returning to the main hydraulic oil reservoir. Ensure there are no kinks, sharp bends, or restriction points. High case drain backpressure will blow out the main shaft seal and contaminate gearbox lubricant with hydraulic oil.

Gearbox Oil Level & Break-In
Verify that the planetary reduction gear hub is filled to the center level plug with fresh gear oil (typically SAE 80W-90 or SAE 90). Perform an initial gear oil change after the first 50 to 100 operating break-in hours.

Hydraulic System Decontamination
If replacing a unit that suffered catastrophic internal mechanical breakdown, thoroughly drain and flush the main hydraulic reservoir, clean oil cooler lines, and replace all return and suction filter elements to clear metallic debris.

4. Frequently Asked Questions (FAQ)
Q: Will this final drive fit both ZTS (Zero Tail Swing) and RTS (Reduced Tail Swing) versions of the JCB 8055 and 8065?
A: Yes. The undercarriage track frames, mounting flanges, drive sprocket bolt patterns, and hydraulic line ports are identical across the 8055 ZTS/RTS and 8065 ZTS/RTS platforms.

Q: My JCB 8055 tracks slowly or strays to one side when traveling. Is the final drive at fault?
A: Loss of propel torque, slow tracking speed, or pulling to one side typically indicates worn piston slippers or scored valve plates inside the travel motor, or worn planetary gears in the hub. Replacing the complete final drive assembly restores equal tracking power and speed to both sides.

Q: Does this unit arrive complete with both the motor and planetary gearbox?
A: Yes. The final drive arrives fully intact as a complete drop-in replacement, including the high-pressure axial piston motor, multi-stage planetary gearbox hub, and pre-calibrated valve/brake manifold block.

5. Shipping & Logistics
Packaging: Preserved with anti-corrosion storage oil, fitted with plastic port caps, and bolted securely inside an export-safe protective wooden crate.

Transit Time: Global express air freight via DHL/FedEx/UPS typically delivers within 3 to 7 business days directly to your workshop or job site.