CAT 308-9805 BEARING-CAGE-GD

CAT 308-9805 (3089805) is a Caterpillar genuine YM series bearing retainer/cage used to position and secure YM sleeve bearings, preventing axial movement within the mounting hole. It is suitable for light to medium load hinge/pin-supported structures. The following is precise original part information:

Core Parameters and Compatibility Information

Item Details
Part Model: CAT 308-9805 Genuine YM Bearing Retainer, weighing approximately 0.25 kg (0.55 lb), used with YM sleeve bearings such as 360-2326, suitable for hinged positions with a pin diameter of 40 mm, used for axial positioning and securing the bearing, preventing movement (Cat®…)

Core Material: Low-carbon alloy steel sheet, stamped and passivated with galvanized surface, providing good structural strength and rust resistance, suitable for dusty and humid outdoor conditions, preventing jamming or loosening caused by rust.

Key Dimensions: Inner diameter approximately… 45.00 mm (1.772 in), outer diameter approx. 55.00 mm (2.165 in), thickness approx. 8.00 mm (0.315 in), ring structure with locating step, H7 tolerance fit with mounting hole, interference fit 0.01-0.03 mm Cat® …

Structural Features: Ring design with locating step, smooth and burr-free edges, precision fit between inner hole and bearing outer diameter, axially locating the bearing to prevent axial movement during operation, ensuring coaxiality of the bearing and pin, suitable for medium to light loads and medium to low speed oscillating conditions Cat® …

Compatible Models: Compatible with boom, stick, or connecting rod hinge pins of CAT 320D/320E excavators, 950H/950K loaders, 120M/140M graders, etc., used to fix YM sleeve bearings and ensure stable operation of the hinged parts Cat® …

Accessories: Compatible with CAT The 4C-9520 mounting punch and 5P-3510 bearing puller are used with YM sleeve bearings such as the 360-2326. During installation, the sleeve bearing must be tightly fitted to the bearing end face to ensure accurate positioning (Cat®…).

Core Functions and Installation Points:

Positioning and Fixing: Axially positions the sleeve bearing to prevent axial movement during oscillation/rotation, ensuring coaxiality between the bearing and the pin, and reducing localized wear and movement jamming caused by movement.

Installation Specifications: Clean the mounting hole, cage, and bearing surface. Inspect the cage for deformation, cracks, rust, or other damage.

First, cold press the 360-2326 or other YM sleeve bearing into the mounting hole. Then, install the 308-9805 cage into the positioning groove, ensuring a complete fit with the bearing end face without gaps.

Tighten the cage with bolts (torque as per the model manual, typically 8-12 N·m). After installation, check that the bearing rotates freely without jamming, abnormal noise, or axial movement.

Maintenance Recommendations: Every 500-700 working hours, check the cage for tightness, surface rust, and deformation. If loosening, deformation, or severe rust is found, replace with genuine parts immediately.

Use only genuine CAT 308-9805 cages to avoid size/material mismatches that can lead to bearing positioning failure, axial movement, accelerated wear of the pin and mounting hole, or component failure.