CAT 194-3655 Tool Lift Bearing

CAT 194-3655 is a dedicated composite bearing assembly (spherical bearing assembly) for Caterpillar motor grader lifting assemblies. It is used at the articulation joint between the grader lifting arm and the frame to bear radial/axial composite loads and is suitable for high-frequency oscillation and impact conditions. The “assembly” includes the bearing body, seals, and mounting base. It can be stably matched with original parts and high-quality replacement parts, ensuring the precision and durability of the lifting mechanism. The following are the core information and key points:

Core Technical Parameters

Item Details
Part Model CAT 194-3655 (1943655) Lifting Mechanism Bearing Assembly, Composite Joint Bearing, Adapted for Grader Lifting Arm Hinge Point, Provides Swing Support and Wear-Resistant Protection

Material Steel Backing + PTFE Fabric Composite Layer (Steel Backing Strength ≥ HB240, Composite Layer Thickness 0.8-1.2mm, Contains Solid Lubricant), Outer Ring Carbon Steel Quenched, Inner Ring Bronze Alloy, Self-Lubricating, Adapted for Oil-Free/Low-Oil Swinging Conditions

Key Dimensions Inner Diameter 50mm, Outer Diameter 65mm, Height 45mm, Mounting Base Outer Diameter 80mm, Tolerances Inner Diameter ±0.02mm, Outer Diameter ±0.03mm, Height ±0.1mm, Swing Angle ±15°, Adapted Pin Diameter 50.01-50.03mm

Compatible Models CAT Graders such as 120H/120K/120M, 140H/140K/140M, and 160H/160K/160M use this type of lifting arm for hinged connections between the lifting arm and the front frame, and for connection points between the lifting cylinder connecting rod and the lifting arm. It is equipped with 425-3581 pins and 425-3580 seals.

Performance Parameters: Radial rated load 250kN, Axial rated load 80kN, Operating temperature -40℃ to 120℃, Coefficient of friction ≤0.06, Wear life ≥10000 working hours, Suitable oscillation frequency 0.5-5Hz.

Core Functions and Structural Features:

Composite load support: Steel backing + PTFE composite layer structure, capable of simultaneously bearing radial and bidirectional axial loads, adapting to the combined forces during lifting arm oscillation, preventing bearing damage due to uneven load, and ensuring stable operation of the lifting mechanism.

Self-lubricating and wear-resistant: The PTFE composite layer contains solid lubricant, allowing for long-term use in oil-free conditions. This reduces frictional resistance during boom swing, minimizes wear on pins and bearings, and is suitable for harsh working conditions such as dust and vibration in construction machinery.

Sealing protection: The assembly includes double-lip seals to prevent dust and mud from entering the bearings, avoiding accelerated wear of the composite layer. It also prevents grease leakage, extending bearing life and making it suitable for outdoor operating environments.

Precise installation: Equipped with a positioning mounting base, installation is quick and easy without additional adjustments, improving maintenance efficiency. After installation, it fits tightly against the boom and frame without looseness, ensuring precise lifting mechanism operation.