- +8613427233834
- 18820999946@163.com
- 13427233834@163.com
The oil pump gear assembly 3887442 (prefix tmx) suitable for CAT 308E2 Cr type small hydraulic excavator
Product Name：Caterpillar Oil Pump Gear Assembly (Part No.: 3887442, TMX Prefix)
Applicable Equipment：
- Machinery: Caterpillar 308E2 CR mini hydraulic excavator
- System: Engine lubrication system oil pump
1 pc
MOQ
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Price
Product Description
Core Parameters：
- Part Number: 3887442 (TMX Prefix)
- Type: Internal gear pump rotor assembly (Gerotor Set)
- Structure & Material: High-strength alloy forged steel, precision CNC machined; inner ring with involute spline, outer rotor with cycloidal tooth profile
- Function: Works with oil pump housing and drive shaft to pressurize and deliver engine oil, providing lubrication and cooling for all moving engine parts
Function & Application：
- Oil Pressure & Delivery: The meshing of inner and outer rotors creates volume changes to draw oil from the sump and pressurize it, delivering it to critical components (crankshaft, camshaft, piston) to form a stable lubricating film.
- Lubrication & Cooling: Circulating oil carries away frictional heat and metal debris, reducing component wear and preventing engine overheating and scuffing.
- High Precision & Durability: Cycloidal tooth design ensures low noise and high efficiency; alloy material and surface heat treatment enhance fatigue and wear resistance, adapting to the high-load operation of excavators.
- OEM Compatibility: Precision manufactured to Caterpillar original tolerances, perfectly matching spline module, rotor eccentricity, and housing clearance. Directly replaces the original 3887442 gear assembly to restore oil pressure.
Application Scenario：
Suitable for maintenance and replacement of the engine lubrication system in Caterpillar 308E2 CR mini excavators, resolving issues such as low oil pressure, engine noise, and increased wear. It is a core hydraulic component to ensure stable engine operation.
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Address：
No. 23 Bridge Pier, Chengfeng Excavator Parts, Baoye City Green Garden (East Area), Tongling Road, Datong Road Subdistrict, Yaohai District, Hefei, Anhui, China.
Tel：
13427233834
WhatsApp：
+8613427233834
Email：
18820999946@163.com
13427233834@163.com