Material: 42CrMo alloy structural steel
Manufacturing Process: Round-bar cutting, CNC turning, induction hardening, precision cylindrical grinding, grooving, and drilling
Specifications: Non-standard customization according to drawings; suitable for quick couplers across different excavator tonnage classes
Customization: Custom machining of pins for various construction-machinery applications; dimensions and hardness can be produced to customer requirements
Applications: Primarily used at the pivot points of excavator quick couplers. Also suitable for bucket pins and other articulated joints in construction machinery; widely used in heavy construction and mining equipment.
Technical Parameters
1. Heat treatment: Surface induction hardening
2. Surface hardness: HRC 52–58
3. Machining accuracy: Outside-diameter tolerance ±0.015 mm
4. Surface roughness: Ra 0.8
5. Manufacturing operations: Turning, grinding, lubrication-hole drilling, and grooving
Product Function
A critical load-bearing pin in a quick coupler, functioning as a rotating hinge shaft and carrying impact loads during equipment operation. The central lubrication passage is used for grease supply, reducing bushing wear and helping extend service life.
