CAT 387-2910 COLLAR-GD

CAT 387-2910 YM is a Caterpillar genuine straight sleeve bearing (bushing), suitable for radial support of pins in articulated/transmission parts of engineering machinery, used to bear radial loads and reduce friction. The following is precise original part information:

Core Parameters and Compatibility Information

Item Details
Part Model: CAT 387-2910 (3872910) YM Straight Sleeve Bearing, Genuine Part, Weight: Approx. 0.58 kg (1.28 lb), Used for rotational support of pins to frames/linkages

Core Material: Steel backing + bronze alloy (powder metallurgy bronze layer), inner bore with axial lubrication grooves and radial grease holes, heavy-duty and impact-resistant, suitable for low-to-medium speed and vibration conditions, excellent fatigue resistance and wear resistance

Key Dimensions: Inner diameter approx. 57.15 mm (2.25 in), outer diameter approx. 70.00 mm (2.756 in), total length approx. 50.80 mm (2.00 in). (in), straight without flange, axial lubrication groove in the inner bore, suitable for 57.15 mm pin mounting positions.

Structural Features: Straight without flange, with axial lubrication groove and radial grease injection hole in the inner bore, ensuring uniform grease distribution and precise positioning, suitable for radial heavy loads and low-to-medium speed oscillating/rotating conditions.

Compatible Models: Compatible with boom pins, steering linkages, lifting arm joints, etc. of CAT 420F2/430F2 backhoe loaders, 908M/909M mini loaders, and 140K/160K graders. Often used with 387-2909 pins and 387-2911 seals.

Accessories: Compatible with CAT 1U-7360 pullers and 2S-8359 mounting sleeves. Installation requires matching pin tolerance (h6), mounting hole tolerance (H7), and surface roughness. Ra≤0.8μm
Core Functions and Installation Points
Radial Support and Friction Reduction: Used for rotating parts of pins and frames/connecting rods, bearing radial loads. It evenly distributes grease through lubrication grooves, reducing friction and wear between pins and bearings, ensuring flexible and stable mechanism operation.
Installation Specifications
Clean the mounting holes, pin surfaces, and bearing surfaces, removing oil and burrs. Check the fit between the bearing and mounting hole (tolerance H7) and the bearing and pin (tolerance d9).
Use a special sleeve for cold installation, ensuring the grease injection hole and lubrication channel are aligned. Do not forcefully hammer, as this may cause deformation.
After installation, perform a grease injection test to ensure smooth grease flow and that the mechanism swings/rotates without jamming or abnormal noise.
Maintenance Recommendations
Check bearing wear and lubrication groove blockage every 800-1000 working hours. Replace with original parts immediately if clearance exceeds the standard (>0.2 mm) or surface peeling occurs.

Only use genuine CAT 387-2910 parts to avoid malfunctions such as pin wear and loosening of mechanisms caused by material/size mismatch.