Challenge 08 Gearbox Ring Gear 24 Bolt

Challenge 08 Gearbox Ring Gear 24 Bolt

This is a replacement internal ring gear for a Challenge Model 08 concrete mixer gearbox that uses a 24-bolt configuration. As a key part of the planetary gear system, this ring gear engages with the planet gears to achieve the necessary torque and speed reduction for drum rotation. Replacement is necessary when the gear teeth become worn or damaged, which can lead to slipping, grinding, or complete failure of the gearbox.

Key Features

• Direct replacement for the original part
• Designed for a 24-bolt pattern housing
• Integral component of the planetary gear assembly

Fits These Mixers

ZF, Rex, PMP, Challenge, Bonfiglioli. Specifically fits the Challenge Model 08 gearbox with a 24-bolt design. It is not compatible with the 12-bolt version of the Model 08 gearbox.

All measurements ± standard manufacturing tolerance.

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.