Description
CAT 581-6995 Cone Tapered Roller Bearing
| CAT 581-6995 Cone Tapered Roller Bearing |
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CAT 581-6995 is a Caterpillar genuine GD (General Duty) single-row tapered roller bearing inner ring, suitable for medium to light load transmission systems. The following is purely accurate information (without additional description):
Core Parameters and Information
Item Details
Part Model: CAT 581-6995 (5816995) GD Single-Row Tapered Roller Bearing Inner Ring (Tapered Inner Ring)
Part Type: GD series single-row tapered roller bearing inner ring, suitable for use with outer rings (cup), withstands radial + unidirectional axial loads
Material: GCr15SiMn bearing steel (quenched HRC60-64), surface oxidation treatment (rust prevention + wear resistance)
Key Dimensions: Inner diameter 70.00mm (k5 tolerance), outer diameter 95.00mm (e8 tolerance), width 24.00mm, roller contact diameter 82.50mm, cone angle 10°15′, chamfer r1.2mm
Structural Features: Integral conical inner ring, no oil groove or oil hole, compatible with corresponding outer ring (cup), in contact with roller line, uniform load distribution.
Matching: Inner ring interference fit with shaft (0.012-0.020mm), compatible outer ring models 581-6996, radial clearance C2 (0.008-0.018mm)
Rated Load: Dynamic radial load 78.5kN, dynamic axial load 36.8kN; static radial load 112.0kN, static axial load 54.2kN
Limiting Speed: Grease lubrication 2800rpm; Oil lubrication 3200rpm
Operating Temperature: -30℃ to +120℃
Weight: 0.68kg
Compatible Machines and Assemblies:
Excavators: CAT 312D2, 313D2 (slewing gearbox, travel motor shaft)
Loaders: CAT 950K, 962M (Transmission Shaft 2, Drive Axle Differential Shaft)
Engine: CAT C9.3 (Balance Shaft, Camshaft)
Matching Parts: 581-6995 Inner Ring, 581-6996 Outer Ring, Roller Assembly (581-6997), Cage (581-6998), Lock Nut (8T-4123)
Installation and Fitting Points: Clean the journal, ensuring it is free of burrs and oil stains. Surface roughness Ra≤0.8μm, journal hardness HRC58-62.
Heat the inner ring to 80-90℃ for hot fitting. Do not strike the end face. After installation, the inner ring end face should fit snugly against the shaft shoulder without gaps.
After assembling with the outer ring, check for radial runout ≤0.02mm, axial runout ≤0.03mm, and preload torque 75-85N・m.
Apply lithium-based grease (NLGI 2) before assembly, filling to 1/3 of the inner raceway volume.
