Bushings are deployed throughout the 6020B's linkage and frame, specifically at the hinge points of all major moving structures:
Upper Frame to Lower Frame (Swing Circle): The swing circle bushings (or slewing ring) allow the entire upper structure to rotate 360 degrees smoothly and consistently. These are crucial for machine stability and precise positioning.
Boom to Upper Frame: These bushings form the primary pivot for the boom's raising and lowering actions. They endure massive tensile and compressive stresses from digging and lifting.
Boom to Stick (Arm): These bushings enable the in-and-out motion of the stick. They are subjected to high-impact shock loads during trenching and breakout.
Stick to Bucket & Linkage: The bushings at the bucket and link connections facilitate the curling and dumping action. This area is highly susceptible to abrasive wear from constant exposure to dirt and debris.
Stabilizer Legs: On a wheeled excavator like the 6020B, the stabilizer leg bushings are vital. They absorb the immense forces generated during lifting operations, ensuring machine stability and safety.
This 436-5393 bushing is used for 6020B excavator.
Related part number:
436-5394
436-5395
436-5396
436-5397
