Rex Gearbox Ball-Main Oil Seal

Rex Gearbox Ball-Main Oil Seal

This component is the outer race, or cup, for a tapered roller bearing used in the main bearing assembly of Rex concrete mixer gearboxes. Although sometimes referred to as a seal, its primary function is to support radial and axial loads on the main shaft, ensuring proper gear alignment and smooth operation. This is a critical wear item that requires replacement when the gearbox is rebuilt or when the main bearing shows signs of wear, damage, or excessive play. It is specifically designed for the demanding, high-load environment of a concrete mixer gearbox.

Key Features

• Hardened steel construction to withstand high radial and axial loads
• Precision-machined raceway for optimal performance and bearing life
• Direct replacement for the original bearing cup in specific Rex gearbox models
• Essential component for gearbox overhauls and main bearing maintenance

Fits These Mixers

ZF, Rex, PMP, Challenge, Bonfiglioli. Fits the main bearing assembly of Rex 770 series concrete mixer gearboxes. It is a component likely included in bearing rebuild kits such as part number 602-10332-02BK.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.