20Y-27-00860 final drive for Komatsu PC210-11 PC210LC-11 PC220-8MO PC220LC-8MO excavator
If you decide to buy equipment at a low price, make sure that you communicate with the real seller. Find out as much information about the owner of the equipment as possible. One way of cheating is to represent yourself as a real company. In case of suspicion, inform us about this for additional control, through the feedback form.
Before you decide to make a purchase, carefully review several sales offers to understand the average cost of your chosen equipment. If the price of the offer you like is much lower than similar offers, think about it. A significant price difference may indicate hidden defects or an attempt by the seller to commit fraudulent acts.
Do not buy products which price is too different from the average price for similar equipment.
Do not give consent to dubious pledges and prepaid goods. In case of doubt, do not be afraid to clarify details, ask for additional photographs and documents for equipment, check the authenticity of documents, ask questions.
The most common type of fraud. Unfair sellers may request a certain amount of advance payment to “book” your right to purchase equipment. Thus, fraudsters can collect a large amount and disappear, no longer get in touch.
- Transfer of prepayment to the card
- Do not make an advance payment without paperwork confirming the process of transferring money, if during the communication the seller is in doubt.
- Transfer to the “Trustee” account
- Such a request should be alarming, most likely you are communicating with a fraudster.
- Transfer to a company account with a similar name
- Be careful, fraudsters may disguise themselves as well-known companies, making minor changes to the name. Do not transfer funds if the company name is in doubt.
- Substitution of own details in the invoice of a real company
- Before making a transfer, make sure that the specified details are correct, and whether they relate to the specified company.
Seller's contacts
+86 199 246...
+86 199 2461 6345
China
China
China, Guangzhou
China
China
China
China
China
China
Nabtesco GM18VL-K-31/52 22B-60-22110 final drive for Komatsu PC130-8 PC138US-8 PC138USLC-8 excavator
China
China
China
China
China
China
China
China
China
China
Romania
Component: Complete Final Drive Assembly (Hydraulic Travel Motor with Planetary Gearbox)
Komatsu OEM Part Numbers: 20Y-27-00860, 20Y-27-00870, 20Y-27-00862, 20Y-27-00872, 20Y-27-00861, 20Y-27-00871 (20Y2700860, 20Y2700870, 20Y2700862, 20Y2700872, 20Y2700861, 20Y2700871)
Machine Compatibility:
Komatsu PC210-11 / PC210LC-11
Komatsu PC220-8M0 / PC220LC-8M0 Heavy Excavator
Condition: High-Quality Aftermarket New (Complete Drop-In Assembly)
Function: Converts high-pressure hydraulic fluid flow into mechanical torque to drive track chains on 21 to 24-ton class excavators.
2. Technical Specifications
Motor Type: High-Pressure Variable Displacement Axial Piston Travel Motor
Reducer Type: Multi-Stage Planetary Gear Reduction System
Performance Parameters: High torque and speed ratios calibrated specifically to Komatsu SAA6D107E engine output and main control valve flow profiles for heavy tracking and gradeability.
Integrated Valve Network: Includes automatic two-speed shift control, multi-disc wet dynamic parking brake, counterbalance valves, and crossover relief valves.
Mounting Interface: Precision-machined sprocket bolt circle and frame mounting flange engineered for direct match to Komatsu PC210/PC220 undercarriages.
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 oil through the highest case drain port. Running an axial piston motor dry—even for a few track revolutions—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 back to the main hydraulic reservoir. Ensure there are no kinks, sharp bends, or restrictions. High backpressure in the travel motor case drain will blow out the main shaft seal and contaminate gearbox lubricant with hydraulic fluid.
Gearbox Lubricant Pre-Fill & Level
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 Flushing
If replacing a unit that suffered catastrophic internal mechanical failure, drain and flush the main hydraulic tank, clean oil cooler lines, and replace all main return and pilot filter elements to eliminate metallic debris.
4. Frequently Asked Questions (FAQ)
Q: Are all these Komatsu part numbers (20Y-27-00860, 20Y-27-00870, 20Y-27-00862, etc.) interchangeable?
A: Yes. These part numbers represent Komatsu factory engineering updates, dash revisions, and left/right side production designations across the PC210-11 and PC220-8M0 series. They share identical physical frame mounting dimensions, sprocket bolt patterns, and hose port threads.
Q: My Komatsu PC210-11 tracks slow or pulls to one side under load. Is the final drive at fault?
A: Loss of propel torque or asymmetric tracking speed usually points to worn internal piston groups within the travel motor section or worn planetary gears inside the hub. Replacing the complete final drive restores equal tracking power and speed.
Q: Is this unit supplied complete with both the motor and planetary gearbox?
A: Yes. The assembly comes fully intact as a complete drop-in replacement, including the high-pressure axial piston motor, multi-stage planetary gearbox, and pre-calibrated valve/brake manifold block.
5. Shipping & Logistics
Packaging: Preserved with anti-corrosion storage oil, sealed with heavy-duty port plugs, and bolted securely inside an export-safe wooden crate.
Transit Time: Global express air freight via DHL/FedEx/UPS typically delivers within 3 to 7 business days, with sea freight options available for heavy freight logistics.