Quality Hyundai R305 Travel Motor Assy 31N8-40011 JCK-00123 for Excavators factory

Hyundai R305 Travel Motor Assy 31N8-40011 JCK-00123 for Excavators

Name: Hyundai R305 Travel Motor Assy 31N8-40011 JCK-00123 for Excavators
Brand: GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED
SKU: R305
Price: 475.00 USD
Availability: InStock

Place of Origin:Made in china

Brand Name:Belparts

Model Number:R305

Minimum Order Quantity:1PCS

Price:Negotiated price

Payment Terms:T/T, trade assurance,PayPal

Supply Ability:1000PCS

Product Details

Highlight:

Hyundai R305 travel motor assembly

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Excavator travel motor assy 31N8-40011

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JCK-00123 travel motor for excavators

Model: R305

Part Number: 31N8-40011 JCK-00123

Part Name: Hyundai Travel Motor

Hlighlight: R305 Final Drive Gearbox 31N8-40011 JCK-00123

Part Name: Hyundai Travel Motor Assy

Application: Excavator Spare Parts

Condition: OEM/ Genuine/Used

Delivery: 3-7days

Product Description

Belparts excavator R305 final drive gearbox 31N8-40011 JCK-00123 for mini excavator parts

The excavatortravel motor assembly is a critical component of the machine’s chassis system, responsible for supporting the entire weight and providing mobility. It typically consists of tracks, sprockets, idlers, rollers (carrier and track), and travel motors. The design of the undercarriage directly impacts the excavator’s stability, traction, and operational efficiency. A high-quality undercarriage ensures smooth movement across rough terrain, minimizes slippage and wear, and offers excellent durability for demanding applications in mining, construction, and agriculture.

PRODUCT DESCRIPTION
Model: R305	Ategory: Final Drive
part number: 31N8-40011 JCK-00123	Place of Origin:Other Country
Condition: Original & Oem	Warranty: 12 months
MOQ: 1 pcs	Production Capacity: 1000pcs /Month
Standard or Nonstandard: Standard	Payment Term: L/C,T/T, Western Union, Tradeassurance
Delivery Time: 1-3 days (depend on order)	Means of Transport: By Sea, Air or DHL/EMS
Guarantee: We will check and send detailed pictures to buyers for confirmation

List of spare parts

#	Part No	Part Name	Qty.
*	31N8-40011	TRACK MOTOR	1
*-1	XJCK-00123	TRAVEL MOTOR UNIT	1
27	XJCK-00045	CASING	1
28	XJCK-00122	COVER-REAR	1
29	XJCK-00121	BLOCK-CYLINDER	1
30	XJCK-00042	RETAINER-SHOE	1
31	XJCK-00041	PLATE-FRICTION	4
32	XJCK-00040	PISTON-BRAKE	1
33	XJCK-00039	PLATE-SEPARATING	5
34	XJCK-00120	PLATE-VALVE	1
35	XJCK-00037	SHAFT	1
36	XJCK-00036	COUPLING	1
N37	XJCK-00035	PLATE-SWASH	1
N38	XJCK-00034	PIVOT	2
39	XJCK-00077	HOLDER-SPRING	1
40	XJCK-00119	PISTON ASSY	9
41	XJCK-00031	D-RING	1
42	XJCK-00030	D-RING	1
43	XJCK-00029	VALVE-CHECK	3
44	XJCK-00028	RING-RETAINER	1
45	XJCK-00027	RING-RETAINER	1
N46	XJCK-00026	SHIM	1
47	XJCK-00025	PISTON	1
48	XJCK-00024	BALL	1
49	XJCK-00023	JOINT-BALL	1
50	XJCK-00022	SEAL-PISTON	1
51	XJCK-00021	RESTRICTOR	1
52	XJCK-00020	RESTRICTOR	1
53	XJCK-00019	SEAL-OIL	1
54	XJCK-00018	SPRING-CHECK VLV	3
55	XJCK-00017	SPRING-CYLINDER	9

The final drive bridges this gap through gear reduction. Picture a small, fast gear (driven by the hydraulic motor) turning a much larger gear. The large gear turns slower but with far greater force. The final drive uses a compact, efficient planetary gear system to achieve an even more dramatic reduction within a small space.

Typically, multiple reduction stages are stacked. Each stage consists of a central sun gear (input), multiple planet gears meshing with it and an outer ring gear (fixed to the housing). As the sun gear spins, it forces the planet gears to "walk" around the inside of the ring gear. The planet carrier, holding these planet gears, rotates slower than the sun gear but with massively increased torque. This output torque from the carrier drives the sprocket shaft. Reduction ratios can be 50:1 or higher! This means for every 50 rotations of the hydraulic motor, the sprocket might only turn once, but with 50 times the turning force – enabling the excavator to overcome immense resistance.