Product Descreiption
1. Parameters
- Part Number: 3950661 (STD size, OEM standard)
- Compatible Engine: Cummins 6CT/6CT8.3, ISC/ISL 8.9, QSC8.3, QSL9 series diesel engines
- Material: Bi-metal (high-strength steel backing + aluminum alloy/tin-based bearing layer)
- Weight: ~0.104 kg/piece; ~2.2 kg/set
- Size: Standard (STD) grade, precision-machined half-shells (upper/lower)
- Certification: ISO9001, CCC, OEM-qualified
2. Installation Position
- Installed in the big end of the connecting rod (between connecting rod and crankshaft journal)
- Fit into the split bore of the connecting rod’s large end, with upper and lower halves enclosing the crankpin
- Secured by connecting rod bolts, located between piston assembly and crankshaft in the engine block
3. Function
- Friction Reduction: Forms a lubricated surface to eliminate direct metal-to-metal contact between connecting rod and crankshaft, minimizing wear
- Load Bearing: Transfers combustion impact loads from piston/connecting rod to crankshaft uniformly
- Lubrication Support: Maintains oil film thickness for hydrodynamic lubrication, preventing dry friction and overheating
- Clearance Control: Maintains precise radial and axial clearances to ensure smooth crankshaft rotation and prevent seizure
- Vibration Damping: Absorbs operational vibrations to protect related engine components
