Description
1P-3958: 66mm Outer Diameter Steel Needle Bearing
| 1P-3958: 66mm Outer Diameter Steel Needle Bearing |
| 495-4172: 231.78mm ID Tapered Roller Cone Bearing |
| 495-4171: Bearing-Cone (DLC Extended Life) |
| 478-9271: 295.52mm Outer Diameter Steel Bearing |
| 593-3837: Pillow Block Bearing |
| 183-9520: Bearing – Cone(Debris Resistant) |
| 5J-1446: Bearing-Aligning |
| 119-3061: 30.82mm Outer Diameter Injector Sleeve |
CAT 1P-3958 is a Caterpillar steel radial needle roller and cage assembly (radial needle roller bearing). It has no inner/outer rings, using the journal and housing bore as raceways, and is suitable for high radial load applications in tight spaces such as gearboxes and transmissions. Key information is as follows:
Key Parameters
Item Details
Type: Radial needle roller and cage assembly, bearing only radial loads, no inner or outer rings, compact structure, suitable for small installation spaces
Dimensions (Metric/Imperial): Inner diameter 47.19mm (1.86in), outer diameter 66.27mm (2.61in), height 38.1mm (1.5in), suitable for corresponding Cat journals and housing mounting holes
Material: Bearing steel cage + high carbon chromium steel needle rollers, needle rollers are hardened to HRC60-64, fatigue-resistant and wear-resistant
Accuracy: Needle roller diameter tolerance ±0.002mm, high cage positioning accuracy, raceway surface roughness… Ra≤0.4μm, ensuring smooth operation.
Lubrication: Relies on splash lubrication or forced lubrication; oil is stored in the needle roller gap, suitable for medium-to-high speed, high-load gear transmission conditions.
Suitable Applications: Suitable for planetary gear sets, constant mesh gears, idler shafts, and engine balance shafts in equipment such as Cat 992K loaders, 740 articulated trucks, and 980C/980K loaders, providing radial load support in compact spaces, transmitting power, and reducing friction loss.
Suitable for transmission systems in heavy equipment such as mining and infrastructure, suitable for high-speed, high radial load conditions, extending the service life of gears and journals.
Performance Characteristics: No inner/outer ring design, compact radial structure, saving approximately 30% of installation space compared to similarly sized ringed needle roller bearings, suitable for installation requirements in confined spaces.
Steel cage + hardened needle rollers, impact and fatigue resistant, extending life by approximately 50% compared to ordinary copper cage assemblies, suitable for high-frequency impact conditions in heavy equipment.
The needle rollers are evenly distributed, ensuring smooth load transmission, low friction coefficient, improved transmission efficiency, reduced equipment energy consumption, and suitability for medium- and high-speed gear components.
