Description
CAT 393-2896 BEARING
| CAT 393-2896 BEARING |
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CAT 393-2896 is a Caterpillar genuine single-row cylindrical roller bearing (outer ring with retaining groove, separable), suitable for gearbox/transfer case output shafts. The following is purely precise information (no additional description):
Core Parameters and Information
Item Details
Part Model: CAT 393-2896 (3932896) Single-row cylindrical roller bearing
Part Type: Single-row cylindrical roller bearing with retaining groove on the outer ring, bearing pure radial loads, suitable for high-speed rotating shaft systems
Material: Inner ring / Outer ring / Roller: GCr15SiMn bearing steel (quenched HRC60-64), Cage: Stamped steel plate (SPCC)
Key Dimensions: Inner diameter 60.00mm (k5 tolerance), outer diameter 110.00mm (h6 tolerance), width 22.00mm; roller diameter 9.00mm, number of rollers 24, chamfer r1.0mm
Structural Features Outer ring with retaining groove, stamped cage with evenly distributed rollers, radial clearance C3 (0.012-0.025mm), inner ring separable for easy installation.
Matching: Inner ring interference fit with shaft (0.008-0.015mm), outer ring transition fit with housing (H7 tolerance). Operating temperature: -30℃ to +120℃.
Rated load: Dynamic radial load 68.5kN, static radial load 62.0kN.
Limiting speed: Grease lubrication 3200rpm; Oil lubrication 3800rpm.
Weight: 0.72kg.
Compatible models and assemblies:
Excavators: CAT 312D, 313D2 (slewing gearbox output shaft)
Loaders: CAT 950H, 962K (gearbox second shaft)
Transfer case assembly: 123-4569 (transfer case assembly)
Matching parts: 393-2896 Bearings, retaining rings (9X-3456), lock nuts (8T-4123), oil seals (12-3456)
Installation and Fitting Points:
Clean the journals and housing bores, ensuring they are free of burrs and oil contaminants. Surface roughness Ra≤0.8μm, journal hardness HRC58-62.
Heat the inner ring to 80-90℃ for hot fitting. Press the outer ring into the housing while it is still cold, applying force evenly using a special tool. Do not strike the rollers.
After installation, check that the radial runout is ≤0.02mm, the axial runout is ≤0.03mm, and the bolt preload torque is 65-75N・m.
Before assembly, fill the bearing with lithium-based grease (NLGI 2), filling to 1/2 the bearing cavity volume.
