CAT 380-7379 BEARING-SLV-GD

CAT 380-7379 (3807379) GD is a Caterpillar original general-purpose straight sleeve bearing, suitable for light to medium load-bearing engineering machinery articulated joints. The following is purely accurate information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 380-7379 GD General-purpose Straight Sleeve Bearing

Part Type: Straight sleeve bearing for articulated joints in engineering machinery, used for radial support between pins and structural components, suitable for light to medium load conditions, reducing friction and wear at the articulation point

Material: Steel backing + tin bronze alloy anti-friction layer (steel backing Q345, alloy layer CuSn8, layer thickness 0.25-0.30mm), surface hardness HB180-220, no hardening treatment

Key Dimensions: Inner diameter 65.00 mm, outer diameter 76.00 mm, total length 80.00 mm mm, wall thickness 5.50 mm, roundness ≤0.012 mm, cylindricity ≤0.018 mm, no flange, no oil hole, no lubrication groove on the inner wall

Structural Features: Straight cylindrical structure with uniform wall thickness, 0.5×45° chamfers at both ends, fixed to the structural component mounting holes by interference fit, and rotates with the pin shaft with clearance fit.

Compatible Structures: Matches the boom/stick pin shaft and frame/boom mounting holes of small and medium tonnage machines, used for radial positioning and load transfer at the articulation points.

Applicable Working Conditions: Low speed, light to medium load, suitable for operating environments from -30℃ to 100℃, grease lubrication, low dust, and low vibration and impact.

Compatible Machine Models:

CAT 906M/907M Small Wheel Loader (boom and rocker arm hinge point)

CAT 305.5E2/306E2 Small Excavator (stick and boom hinge point)

CAT 416F2/420F2 Excavator Loader (Boom to Frame Connection)

CAT 120M2 Grader (Traction Frame to Frame Hinge Point)
Installation and Fitting Points:
* The bearing should have an interference fit with the structural component mounting holes (interference 0.015–0.025 mm), and a clearance fit with the pin (clearance 0.040–0.060 mm) to ensure smooth and unobstructed rotation.
* Use a dedicated pressing tool to press the bearing in smoothly. Do not directly strike the bearing end face. After installation, the bearing end face should be flush with the structural component plane, without skewing or looseness.
* Before installation, clean the bearing, mounting holes, and pin. Check the bearing for cracks, deformation, and ensure the anti-friction layer is intact and free of scratches.
* Radial positioning is achieved through the mounting holes, and axial positioning is achieved through the structural component steps. After installation, check that the hinged joint rotates smoothly without jamming, the radial runout of the pin is ≤0.07 mm, and there are no abnormal clearances.

* According to the machine manual, check the bearing clearance every 1800 working hours, and replace the bearing if it exceeds 0.15 mm.