DH55 DH60 Motor Gearbox Assembly Planetary Gear Sun Tooth Bearing Gasket
Price:
Negotiable
MOQ:
1 Pc
Delivery Time:
7-15days
Product Description
DH55 DH60 Excavator Machinery Parts 1-2 Stage Travel Gearbox Assembly Planetary Gear Sun Tooth Bearing Gasket
The ExcavatorTravel Motor is the "leg and foot" power source of construction machinery such as excavators and crawler cranes. Essentially, it is an integrated assembly of a "hydraulic motor + reducer". It is responsible for converting the pressure energy of hydraulic oil into huge torque to drive the equipment to move.
Known as the travel gearbox in daily use, the excavator travel reducer is a central transmission component that couples the hydraulic motor with the track drive wheel. It lowers rotational speed and augments torque, providing low‑speed high‑torque driving power for track propulsion.
Core Structure (Three‑Stage Planetary Gear Mechanism)
• Sun Gear: Attached to hydraulic motor input as the power supply unit.
• Planet Gears: 3‑4 pieces moving around the sun gear and self‑rotating to transmit power.
• Ring Gear (Internal Gear Ring): Fixed or floating structure meshed with planet gears.
• Planet Carrier: Transmits output power to drive reducer housing and track driving wheel.
• Housing and Bearings: Reinforced housing ensures dust and oil leakage prevention; heavy‑load bearings sustain rotation.
• Brake: Integrated multi‑plate parking brake with spring engagement and hydraulic release to prevent slope sliding.
Working Principle
High‑speed low‑torque power from hydraulic motor enters travel reducer → three‑stage planetary gears realize sequential deceleration → low‑speed high‑torque power is delivered → propels tracks for machine travel.
Regular Malfunctions and Underlying Causes
Core Structure (Three‑Stage Planetary Gear Mechanism)
• Sun Gear: Attached to hydraulic motor input as the power supply unit.
• Planet Gears: 3‑4 pieces moving around the sun gear and self‑rotating to transmit power.
• Ring Gear (Internal Gear Ring): Fixed or floating structure meshed with planet gears.
• Planet Carrier: Transmits output power to drive reducer housing and track driving wheel.
• Housing and Bearings: Reinforced housing ensures dust and oil leakage prevention; heavy‑load bearings sustain rotation.
• Brake: Integrated multi‑plate parking brake with spring engagement and hydraulic release to prevent slope sliding.
Working Principle
High‑speed low‑torque power from hydraulic motor enters travel reducer → three‑stage planetary gears realize sequential deceleration → low‑speed high‑torque power is delivered → propels tracks for machine travel.
Regular Malfunctions and Underlying Causes
- Unusual or excessive noise: Gear wear, bearing breakdown, lack of lubrication or oil deterioration.
- Oil seepage failure: Worn seals, housing fractures, overfilled lubricating oil level.
- Weak driving force / Track drift: Worn gears or bearings, failed brake release, inconsistent left‑right reducer performance.
- Excessive temperature rise: Overloading, ineffective lubrication, poor heat dispersion, brake dragging condition.
- Gear skipping or jamming: Fractured gear teeth, impaired planet carrier, intrusion of external debris.
| Machinery Test Report | Provided | Warranty | 3 Months |
| Video outgoing-inspection | Provided | Brand Name | OEM |
| Place of Origin | China | Part Name | Travel Gearbox Assembly |
| Model | DH55 DH60 | Feature | Durable |
| MOQ | 1 Piece | Quality | Tested Great Performance |
| Payment Term | TT | Application | Excavator |
| Delivery Time | 7-35 Days | Condition | Brand New |
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Company
Lanzhou Fudong Guangqi Trading Co., Ltd
Location
No. 7 West South Binhe Road, Xigu District, Lanzhou City, Gansu Province, China
Contact Person
Liang