Description
CAT 480-2520 BEARING
| CAT 480-2520 BEARING |
| CAT 583-3288 BEARING-INNER-GD |
| CAT 364-9897 Self Wrapping Reflective Adhesive Sleeve |
| CAT 191-2569 Bearing – Needle(Debris Resistant) |
| CAT 477-2023 Two Bolt Bearing Cap |
| CAT 330-9251 BEARING-GD |
| CAT 388-7494 Camshaft Main Bearing |
| CAT 583-8702 BEARING-SLV-GD |
The CAT 480-2520 is a Caterpillar double-row tapered roller bearing (installed in pairs, including inner ring + outer ring + cage + roller assembly). It is suitable for Cat 980K/982M loader gearbox axle 2, 14M/16M grader rear axle differential, C18 engine camshaft rear end, and D11 bulldozer steering clutch output shaft. It is used to withstand heavy radial loads and bidirectional axial loads, and is suitable for medium and high speed, impact and vibration conditions, ensuring stable operation and precise positioning of the transmission system. The following is structured technical and application information:
Core Technical Parameters
Item Details
Basic Attributes
Model 480-2520, Double Row Tapered Roller Bearing (Paired Installation, Including Inner Ring + Outer Ring + Cage + Roller Assembly), Suitable for Cat 980K/982M loader gearbox second axle, 14M/16M grader rear axle differential, C18 engine camshaft rear end, D11 bulldozer steering clutch output shaft, Material is Chromium-Molybdenum Alloy Steel (Inner Ring + Outer Ring + Rollers, Carburized and Quenched HRC61-65), Cage is Stamped Steel Plate (SPCC, galvanized and passivated for corrosion resistance), Operating Temperature -40℃ to +120℃, Single Weight approximately 3.2 kg, Used to bear heavy radial loads and bidirectional axial loads, Suitable for medium and high speed, impact and vibration conditions, Ensuring stable operation and precise positioning of the transmission system
Key Dimensions
Inner Diameter 101.6 mm (4 inches, tolerance) 0/-0.015 mm), outer diameter 180.975 mm (7.125 inches), total width 63.5 mm (2.5 inches), roller large end diameter 15.875 mm, small end diameter 11.112 mm, radial clearance C3 (0.08-0.12 mm), mating tolerances inner ring k6 (+0.015/-0.002 mm), outer ring K7 (+0.030/-0.015 mm)
Compatible models: Cat 980K/982M loaders (transmission shaft 2, drive shaft support), 14M/16M graders (rear axle differential, steering knuckle), C18 engines (camshaft rear end, balance shaft positioning), D11 bulldozers (steering clutch output shaft, final drive planetary carrier)
Assembly fit: Inner ring and shaft interference fit (interference 0.010-0.015 mm) The outer ring and bearing housing have a transition fit (clearance 0-0.020 mm), suitable for shafts with a diameter of 101.6 mm. The journal fillet radius should be ≤2.0 mm, and the coaxiality ≤0.03 mm. The axial preload after installation is 35-45 N·m.
Installation and Maintenance Points: Before installation, clean the bearing assembly, journal, and bearing housing bore, checking for scratches, rust, and cracks. Measure the dimensions of the journal and outer ring bore to ensure the fit meets requirements. The journal fillet radius should be ≤2.0 mm to avoid stress concentration at the roller ends.
Use the cold-press installation method. Use a special press to first press the outer ring into the bearing housing, then fit the inner ring onto the journal. Do not directly strike the inner or outer ring to prevent roller deformation and outer ring chipping. After installation, adjust the axial preload to 35-45 N·m to ensure no axial movement.
Lubrication and maintenance: Grease lubrication should fill 30-40% of the bearing’s internal space (Cat Moly Grease recommended), or oil lubrication (ISO VG 46-68 hydraulic oil); check bearing wear and clearance every 800 hours. If rollers show indentations, outer ring wear exceeds 0.15 mm, or radial clearance exceeds 0.20 mm, replace the bearing immediately.
