Caterpillar uses high-performance materials for its bushings to ensure they meet the rigorous standards of their machines. The most common materials are:
Through-Hardened Alloy Steel: This is the most prevalent and standard material for Caterpillar bushings.
Composition: Typically a medium-carbon alloy steel such as AISI 4140 or 1045 steel, often referred to as "chrome-moly" steel. These steels contain chromium and molybdenum, which enhance hardenability, strength, and toughness.
Properties:
High Hardness: The entire cross-section of the bushing is hardened to a specific Rockwell hardness (e.g., HRC 55-65). This provides excellent resistance to wear and abrasion from dirt and sand.
Good Toughness: The core of the bushing remains tough to absorb impact loads without cracking or deforming.
High Strength: Withstands the high radial and shock loads experienced during digging and lifting.
This 6E-0886 bushing is used for 385C excavator.
Related part number:
280-7448
6E-0886
7P-3194
9J-7100
