177-4143: Bearing – Cone(Debris Resistant)

Cat 177-4143 is a Caterpillar single-row cylindrical roller bearing inner ring, suitable for heavy-duty machinery transmission systems. It is used to withstand heavy radial loads and ensure stable transmission between the shaft and bearing. The following is complete core information:

Core Parameters (Precise Version)

Item Details
Basic Information
Model: 177-4143, type: single-row cylindrical roller bearing inner ring, includes only the inner ring (excluding outer ring, rollers, and cage), compatible with corresponding bearing components (Cat® Parts)

Compatible Models
Compatible with Cat 3406B/C, 3408, 3412 series engines, Cat D8N/D8R bulldozers, 773E/775E mining trucks, 627E loader, etc., for transmission components such as gearboxes, drive axles, and differentials.

Material and Processing
Material: 42CrMo low-alloy structural steel, quenched and tempered, surface carburized, hardness HRC58-62, raceway roughness… Ra≤0.4μm, surface treated with anti-rust oil

Key Dimensions: Inner diameter 127mm (5.0 inches), outer diameter 165mm (6.496 inches), width 32mm (1.26 inches), inner ring thickness 18mm, chamfer radius 2mm, weight approx. 2.8kg, inner diameter tolerance ±0.05mm

Compatible Components: Compatible with 177-4144 outer ring, 177-4145 cage, and 177-4146 cylindrical rollers to form a complete single-row cylindrical roller bearing. It is recommended to replace as a set.

Functions, Installation, and Maintenance

Core Functions: Works with bearing assemblies to withstand heavy radial loads, suitable for high-speed operation, reduces friction, ensures stable power transmission, extends bearing life, and is suitable for heavy-duty, high-vibration Cat® Parts applications.

Installation Points: After cleaning the surface, heat-fit at 80-100℃. Do not strike; interference fit, no looseness or radial runout after installation.

Maintenance tips: Regularly check lubrication and replenish oil in time to prevent dry friction from causing premature failure.