CAT 6D-4189 RETAINER

CAT 6D-4189 (6D4189) is a Caterpillar genuine bearing positioning retainer used for axial positioning of bearings in engines, transmissions, or hydraulic systems to prevent movement. It is suitable for low-to-medium speed and medium-load conditions. The following is precise information about the genuine part:

Core Parameters and Compatibility Information

Item Details
Part Model: CAT 6D-4189 Genuine bearing retainer, weighing approximately 0.28 kg (0.617 lb), suitable for low-to-medium speed and medium-load shaft end/bearing positioning scenarios. Used to fix the bearing outer ring and eliminate axial clearance. Compatible with shaft end structures with a pin diameter of 40 mm.

Core Material: Medium carbon alloy steel sheet, stamped and blackened surface, rust-proof and corrosion-resistant, suitable for dusty and humid conditions, preventing loosening or jamming caused by rust. Structural strength and durability meet general operating requirements.

Key Dimensions: Inner diameter approximately 45.00 mm (1.772 in), outer diameter approximately… 58.00 mm (2.283 in), approximately 8.00 mm (0.315 in) thick, with a locating step, mounting hole tolerance H7, interference fit with bearing outer diameter, interference 0.01-0.03 mm

Structural Features: Annular locating step design, burr-free edges, precise fit between inner hole and bearing outer diameter, axial positioning to prevent movement, ensuring bearing and shaft coaxiality, compact structure, easy installation, suitable for low-to-medium speed conditions.

Compatible Models: Compatible with CAT C7.1/C9 engines, 950H/966H loaders, 140M graders’ camshafts, crankshafts, or hydraulic pump drive shafts for locating radial bearings/needle roller bearings, suitable for low-to-medium speed and medium load conditions.

Accessories: Compatible with CAT 5P-3510 bearing puller, 4C-9520 mounting punch, and CAT 186-2915 bearing, 360-2326 YM bearing. For sleeve bearings, installation requires a tight fit with the bearing end face and precise positioning.

Core Functions and Installation Points:

Positioning and Anti-migration: Axially positions the bearing to prevent axial movement during operation, ensuring coaxiality between the bearing and shaft, reducing localized wear and jamming, and suitable for low-to-medium speed, medium-load oscillating/rotating conditions.

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

First, cold press the bearing into the mounting hole, then install the 6D-4189 retainer into the positioning groove, ensuring a complete fit with the bearing end face without gaps.

Tighten to the torque specified in the machine manual (usually 8-12 N·m). After installation, check that the bearing rotates freely without jamming, abnormal noise, or axial movement/backlash.

Maintenance Recommendations: Every 500-700 working hours, check the retainer’s tightness, surface rust, and deformation. If loose, deformed, or severely rusted, immediately replace with original parts.

Use only genuine CAT 6D-4189 parts to avoid mismatched dimensions/materials that could lead to positioning failure, increased wear on the shaft and mounting holes, or component failure.