CAT 619-6157 BEARING

CAT 619-6157 is a Caterpillar genuine needle roller bearing, suitable for high-speed, heavy-duty rotating parts in engineering machinery gearboxes, drive axles, or working devices. It is used to withstand high radial loads and reduce friction within limited installation space. The following is precise genuine part information:

Core Parameters and Compatibility Information

Item Details
Part Model: CAT 619-6157 (6196157) Genuine Needle Roller Bearing (with cage), weighing approximately 0.12 kg (0.26 lb), suitable for rotating support positions with a pin diameter of approximately 38.10 mm (1.500 in), used in high-load rotating parts of gearbox gear shafts, drive axle half-shafts, or working device connecting rod pins (Cat®…)

Core Material: Bearing steel cage + high-carbon chromium bearing steel needle rollers, needle rollers are quenched and tempered, hardness… The HRC60-64 cage is made of stamped steel plate, offering high strength, wear resistance, and impact resistance. It is suitable for high-speed, high-load conditions and boasts excellent heat dissipation and load-bearing performance.

Key Dimensions: Inner diameter approx. 38.10 mm (1.500 in), outer diameter approx. 47.62 mm (1.875 in), total length approx. 25.40 mm (1.000 in). It features a no-inner-ring design, with needle rollers directly contacting the pins. The cage guides the evenly distributed needle rollers. It fits mounting holes with a diameter of 47.62 mm and a length of 25.4 mm.

Structural Features: The no-inner-ring needle roller + steel plate cage structure features small diameter and numerous needle rollers, resulting in strong radial load-bearing capacity. It is suitable for space-constrained mounting positions and has a low coefficient of friction during high-speed rotation, making it suitable for continuous rotation or reciprocating motion conditions.

Compatible Models: Compatible with CAT 140K/160K grader gearboxes, 420F2/430F2 backhoe loader drive axles, and 908M/909M models. Linkage pins and other components in small loader working devices are often used in conjunction with 380-7558 YM shafts and 585-1503 YM sleeve bearings for high-load rotational support in transmission systems or working devices.

Matching components: Compatible with CAT 4C-9520 mounting punch and 5P-3510 bearing puller; mounting hole tolerance H7; interference fit 0.02-0.04 mm; cold-pressed into place to avoid heating deformation.

Core Functions and Installation Points:
High-load support and friction reduction: High radial load bearing capacity is achieved with dense needle rollers, suitable for high-speed rotation conditions, reducing friction between the pin and the mounting hole, reducing component wear, and ensuring transmission efficiency and motion accuracy.

Installation Specifications:
Clean the mounting hole, pin, and bearing surfaces, removing oil and burrs. Check the needle rollers and cage for damage, ensuring the pin surface hardness is ≥HRC58.

Use a special punch to cold-press the bearing into the mounting hole, ensuring the end face is flush with the mounting hole plane, without tilting, and that the needle rollers are not stuck.

After installation, check the clearance between the pin and bearing (0.01-0.02 mm). Ensure smooth rotation without abnormal noise, and guarantee unobstructed lubrication.

Maintenance Recommendations: Every 500-800 working hours, check bearing wear, needle roller condition, and clearance. If clearance > 0.08 mm, needle roller breakage, or cage deformation, immediately replace with genuine parts.

Use only genuine CAT 619-6157 parts to avoid accelerated pin wear, transmission jamming, or component failure caused by non-genuine parts with incompatible materials/sizes.