CAT 008-3054 KNUCKLE

CAT 008-3054 is a Caterpillar genuine double-ear spherical plain bearing (pure original factory information, no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 008-3054 (0083054) Spherical Plain (Double-Ear Spherical Plain Bearing)

Part Type: Radial self-lubricating double-ear spherical plain bearing, suitable for double hinge points in swing mechanisms, low-friction angular motion, compensates for installation errors

Material: Outer ring (GCr15 bearing steel, hardened HRC58-62) + Inner ring (42CrMo alloy steel, tempered HB280-320) + Inner bore PTFE fabric gasket

Key Dimensions: Inner diameter 35 mm, outer diameter 62 mm, ear spacing 28 mm, total length 50 mm, spherical radius 31 mm, gasket thickness 0.8 mm

Structural Features: Integral double-ear fork head, spherical contact in the inner bore, self-lubricating PTFE gasket, adaptable to ±12° Swing angle, oil-free maintenance

Surface treatment: Outer ring blackened + passivated, inner ring hard chrome plated (thickness 0.05-0.08 mm), ear fork surface galvanized

Matching: Inner bore and pin clearance fit (D10/h9), radial clearance 0.045-0.08 mm, ear hole and bolt transition fit (H8/js7)

Rated load: Radial rated dynamic load 28 kN, radial rated static load 60 kN, allowable swing frequency 3 cycles/min

Operating temperature: -40℃ ～ +180℃

Weight: 0.38 kg

Compatible models and assemblies:

Mini excavators: CAT 301.7CR, 302.7CR (stick and bucket connection joint, boom cylinder upper hinge point)

Skidney steer loaders: CAT 242D, 272D (working device connecting rod double ear hinge point)

Matching parts: 008-3054 joint, pin (compatible) 008-0465 Bushing, Cotter Pin, Dust Cover

Installation and Maintenance Points
Clean the pin shaft and inner hole of the joint, removing burrs and oil. The inner hole roughness Ra≤1.6μm, and the pin shaft roughness Ra≤0.8μm.

Use a special tool to press the pin shaft into the double-ear hole. Do not strike the ear fork. Ensure the pin shaft and inner hole are coaxial and that there is no jamming during swing.

Post-installation inspection: The swing angle meets the design value, the radial clearance meets the standard, and the ear fork is free from deformation and cracks.

Maintenance: Check the swing flexibility and wear every 1500 working hours. Replace the bushing when wear exceeds 0.3 mm or peeling occurs.