CAT 160-6309 209.6mm Long Bearing Cap

CAT 160-6309 is a Caterpillar genuine engine connecting rod bearing cap, adapted for medium and heavy-duty engine connecting rod big ends, used to secure connecting rod bearings and withstand alternating loads. The following is structured raw data, excluding replacement parts information (Cat® Parts).

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 160-6309, type is engine connecting rod bearing cover (split type), material is 42CrMo alloy steel, heat treated (HB 280-320), single weight 1.85 kg, surface treatment is blackening + manganese phosphate rust prevention, suitable for connecting rod big end bearing positioning and fastening, working temperature -40℃ to +220℃, fatigue strength ≥800 MPa

Key Dimensions Bearing hole inner diameter 100 mm (3.94 in), number of bolt holes 2, bolt hole diameter 18 mm (H7), bolt hole center distance 80 mm, cover length 120 mm, width 60 mm, thickness 30 mm, bearing hole stop diameter 105 mm (g6), stop depth 5 mm, locating pin hole diameter 8 mm (H7), locating pin hole center distance 60 mm

Applicable Models and Locations Applicable to Cat This product is used for the connecting rod big ends of C6.6, C7.1, and C9.3 engines, 320 and 323 excavators, and 140 GC graders. One part is used per connecting rod, which mates with the connecting rod body to fix the connecting rod bearing and withstand alternating impact loads.

Performance Parameters: Bolt preload torque 180-200 N·m, yield strength ≥900 MPa, tensile strength ≥1100 MPa, fatigue life ≥10000 hours, flatness ≤0.02 mm, bearing hole roundness ≤0.01 mm, perpendicularity ≤0.015 mm.

Structural and Performance Advantages: High-strength alloy steel material: 42CrMo alloy steel, quenched and tempered, has 30% higher strength than ordinary carbon steel, excellent fatigue resistance, and is suitable for the alternating impact conditions of engine connecting rod big ends (Cat® Parts).

Split-type positioning structure: Featuring a locating pin hole and stop design, it precisely positions itself with the connecting rod body, preventing bearing cap misalignment, ensuring bearing installation accuracy, and reducing vibration and noise during operation.

High-precision machining: Strict control over bearing bore roundness, flatness, and perpendicularity ensures a perfect fit with the bearing, extending bearing life and reducing wear.

Original factory quality assurance: Manufactured by Caterpillar, ensuring high compatibility with connecting rod bodies, bearings, and other components, high reliability, and preventing malfunctions caused by dimensional deviations.

Installation and maintenance points (raw data)

Installation procedure: Clean the bearing cap, connecting rod body, and bearing surfaces. Install the locating pin (123-4573). Place the bearing into the connecting rod big end, aligning the bearing cap and connecting rod body. Install the bolts (160-6310). Pre-tighten the bolts to 180-200 N·m in a crisscross sequence. Check that the fit gap between the bearing cap and connecting rod body is ≤0.03 mm, and the bearing bore roundness is ≤0.01 mm (Cat® Parts).

Maintenance Cycle: Check bolt torque every 2000 hours, check the fit between the bearing cap and connecting rod body every 5000 hours, and disassemble for inspection every 10000 hours. If bearing cap deformation, cracks, or thread damage are found, replace it immediately.

Common Faults and Solutions: Loose bolts can cause abnormal noise and vibration, requiring retightening; deformed bearing caps can lead to premature bearing wear, requiring replacement of the bearing cap; cracks can cause serious malfunctions, requiring immediate shutdown and replacement.