• 21T-54-36471 21T5436471 Cushion KOMATSU Excavator Spare Parts Fitting For PC2000-8

• Specification

• Functions

1.Impact Absorption: When the excavator’s bucket touches the ground or the bulldozer’s blade pushes hard materials, the cushion absorbs 30–50% of the instantaneous impact force. This prevents direct damage to hydraulic cylinder rods, track pins, or frame structures (e.g., avoiding bent rods or cracked bushings).

2.Vibration Damping: Reduces high-frequency vibration from the undercarriage during travel (e.g., on uneven construction sites). This lowers noise in the cab (by 10–15 dB) and reduces operator fatigue during long shifts.

3.Sealing & Protection: For hydraulic cylinder-mounted cushions, the rubber/PU material forms a secondary seal, preventing dust, sand, or hydraulic oil leakage from entering the cylinder’s internal components (e.g., piston seals), thus extending the cylinder’s service life by 20–30%.

• Compatible models

• More other cushion parts fit for KOMATSU machine

• Catalog parts list

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Advantage

1. Offer Top quality & competitive products

2. Support 12-month warranty

3. 100% tested before shipping

4. Delivery in time

5. A wide range of Oil Pressure Sensor, Fuel Tank Level Sensor, Temperature Sensor, Speed Sensor for excavator 

6. More than 15 years production and 11 years foreign trade experience

7. Professional QC team

8. Best sales team, 24 hours service

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .