• 215817B Gear Ring(A) Bulldozer Spare Parts Fitting For D6 D7 D65 D85

• Specifiion

• Functions

1.Torque Transfer: It meshes with a smaller pinion gear (driven by the engine or hydraulic motor), converting high-speed, low-torque rotation into low-speed, high-torque output—critical for moving heavy loads (e.g., pushing soil with a bulldozer blade) or driving tracks.

2.Directional Control: In transmissions, paired with countershaft gears, it enables forward/reverse movement by engaging different gear sets.

3.Load Distribution: The large number of teeth (60–80) spreads contact forces evenly, reducing wear and allowing the gear to handle extreme loads (up to 5,000+ Nm of torque in large dozers).

• More other gear parts fit for DOOSAN machine

• alog 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 .