7V4077 Spider Universal Joint Assembly Suitable for Caterpillar 950B 950E 960F Wheel Loader
The 7V-4077 (also written as 7V4077) is a Cat Universal Joint Assembly (Spider & Bearing Group) designed for heavy equipment power transmission systems
Product Features
Drivetrain Application: Transfers rotational power between connected shafts.
Steel Construction: Made with steel components for drivetrain service applications.
Bearing Support: Supports joint movement during shaft rotation.
Replacement Solution: Suitable for maintenance and replacement of worn universal joint components.
Part Number Identification: Referenced by part number 7V4077 for easier parts matching.
Product Applications
The 7V4077 Spider Universal Joint Assembly is listed for selected Caterpillar equipment, including:
Wheel Loaders: 950B, 950E, 950F, 950F II, 960F
Wheel Skidders: 515, 525, 528, 528B, 530B
Other compatible drivetrain configurations, subject to machine serial number and parts catalogue verification.
Always check the original part number and machine configuration before placing an order. Compatibility may vary depending on the equipment version and previous repairs.
When Should the Universal Joint Assembly Be Replaced?
A worn universal joint can affect drivetrain operation and may lead to additional component wear if left unattended. Common signs that the assembly needs inspection include:
Abnormal vibration during operation
Knocking or clicking noises from the drivetrain
Excessive play at the joint
Worn bearing surfaces or damaged bearing components
Inspect the joint and connected components before replacement. Correct installation and lubrication, where applicable, are important for reliable service.











