• 120-27-31411 1202731411 Pinion KOMATSU Bulldozer Spare Parts Fitting For D40A-3 D41A-3​

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• Specifiion

Category	Final Drive Gear
Name	Pinion
Parts No	120-27-31411 1202731411
Machine Number	D40A D40AM D40F D40P D40PF D40PL D40PLL D41A
Lead time	1-3 DAYS
Quality	Brand new, OEM quality
MOQ	1 PCS
Means of transport	By sea/air, DHL FEDEX UPS TNT
Packing	As request or standard packing

• Key functions

1.Swing Motion Enablement: Transfers power from the hydraulic motor/gearbox to the swing ring gear, allowing the upper structure to rotate 360°—vital for tasks like digging, loading, and material placement.

2.Torque Amplification: Works with the swing gearbox to multiply torque, providing enough force to rotate the excavator’s heavy upper structure (≈10–12 tons for PC120-6).

3.Smooth Operation: Precision meshing and helical teeth minimize vibration and noise, improving operator comfort and reducing wear on other swing drive components.

4.Load Distribution: Even tooth contact distributes stress across the pinion and ring gear, extending the service life of both components.

• Compatible models

BULLDOZERS D40A D40AM D40F D40P D40PF D40PL D40PLL D41A D41E D41P
CRAWLER LOADERS D41Q D41S Komatsu

• More other pinion applied to KOMATSU heavey machine

12F-954-2810 PINION

D31P, D40PF

120-27-31411 PINION,2ND

D40A, D40AM, D40F, D40P, D40PF, D40PL, D40PLL, D41A, D41E, D41P, D41Q, D41S

12F-27-11260 PINION, 11 TEETH,2ND

D40A, D40AF, D40PF, D40PL, D40PLF, D45A, D45P, D45S

125-27-21210 PINION, 13 TEETH,1ST

D40A, D40AF, D40PF, D40PL, D40PLF, D45A, D45P, D45S

621 125 C1 PINION, DRIVE

KOMATSU

195-21-00081 PINION AND GEAR A.

D355A

114-Y60-1140 PINION,BEVEL

D31AM, D31SM, DWT037

113-27-41221 PINION

D31A, D31AM, D31E, D31P, D31PG, D31PL, D31PLL, D31Q, D31S, D31SM, D37A, D37E, D37P, D37PG

696 958 73 Pinion

KOMATSU

1207 382 H91 PINION AND COUNTERSHAFT

KOMATSU

404-00092A PINION;GEAR

DX300, DX300LL, SOLAR

1207 383 H91 PINION AND COUNTERSHAFT

KOMATSU

124-27-51212 PINION

D41E, D41E6T, D41P, D41PF

120-27-31411 PINION,2ND

D40A, D40AM, D40F, D40P, D40PF, D40PL, D40PLL, D41A, D41E, D41P, D41Q, D41S

• Directory listing

Pos.	Part No	Qty	Parts name	Comments
1	120-27-31211	[2]	PINION,1ST Komatsu	4.47 kg.
			["SN: 10001-UP"]
2	06043-00311	[4]	BEARING,ROLLER Komatsu	1.501 kg.
			["SN: 10001-UP"]
3	120-27-31221	[2]	CAGE Komatsu China
			["SN: 10001-UP"]
4	07000-05155	[2]	O-RING Komatsu China	0.017 kg.
			["SN: 10001-UP"] analogs:["0700005155E", "0700015155"]
5	01010-51230	[12]	BOLT Komatsu	0.043 kg.
			["SN: 10001-UP"] analogs:["0101081230", "01010B1230"]
6	01602-21236	[12]	WASHER,SPRING Komatsu	0.006 kg.
			["SN: 10001-UP"] analogs:["M011601200006", "0160211236"]
7	07012-10080	[2]	SEAL,OIL Komatsu	0.078 kg.
			["SN: 10001-UP"]
8	113-27-21230	[2]	FLANGE Komatsu China
			["SN: 10001-UP"]
9	01010-51030	[24]	BOLT Komatsu OEM	0.03 kg.
			["SN: 10001-UP"] analogs:["0101081030", "801015110", "M018011000306", "YM26116100302"]
10	01602-21030	[24]	WASHER,SPRING Komatsu	0.004 kg.
			["SN: 10001-UP"] analogs:["YM22217100000"]
11	131-21-52320	[2]	NUT Komatsu	0.36 kg.
			["SN: 10001-UP"]
12	113-27-21220	[2]	LOCK Komatsu China
			["SN: 10001-UP"]
13	07000-02085	[2]	O-RING Komatsu China	0.03 kg.
			["SN: 10001-UP"] analogs:["0700012085", "YM24321000850"]
14	01010-51225	[4]	BOLT Komatsu	0.074 kg.
			["SN: 10001-UP"] analogs:["0101081225", "01010B1225", "0101051222"]
16	120-27-31411	[2]	PINION,2ND Komatsu	10.21 kg.
			["SN: 10001-UP"]
17	120-27-31311	[2]	GEAR Komatsu China
			["SN: 10001-UP"]
18	120-27-31320	[6]	KEY Komatsu China
			["SN: 10001-UP"]
19	135-27-11340	[2]	SPACER Komatsu China
			["SN: 10001-UP"]
20	130-09-31492	[4]	BEARING,ROLLER Komatsu	2.94 kg.
			["SN: 10001-UP"] analogs:["1300931491"]
21	120-27-31421	[4]	HOLDER Komatsu China
			["SN: 10001-UP"]
22	01010-51640	[4]	BOLT Komatsu	0.264 kg.
			["SN: 10001-UP"] analogs:["0101061640", "801015186", "0101031640", "0101081640"]
23	01653-21616	[4]	WASHER,LOCK Komatsu China
			["SN: 10001-UP"] analogs:["0165301616", "0165311616"]

• 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.

• 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 .

Product Tags:

Komatsu bulldozer pinion spare part

      

D40A-3 bulldozer fitting part

      

D41A-3 bulldozer replacement gear

      

120-27-31411 1202731411 Pinion KOMATSU Bulldozer Spare Parts Fitting For D40A-3 D41A-3 Images