Product Description
The CMT 79101 2-Piece Bearing Kit with Shield, Screw, and Hex Key is a complete replacement bearing set designed specifically for CMT contractor router bits. Keeping your router bit guide bearings in top condition is essential for flush trim work, pattern routing, rabbeting, and profile cutting - and this kit gives you everything needed to restore smooth, accurate self-guiding performance in a single package. With two bearing sizes included alongside dust shields, a screw, and a 2.5mm hex key, this set covers the most common bearing replacement needs for CMT contractor-series bits.
Key Features
- Includes a 3/8 in. bearing and a 1/2 in. bearing - covering two of the most common guide bearing sizes used on CMT contractor router bits, so you can handle multiple bit configurations with one kit.
- Dust shields included for both bearing sizes - protect the bearing races from sawdust, debris, and fine particles, extending the working life of the replacement bearings.
- Screw and 2.5mm hex key included - everything required for a complete bearing swap is in the box, eliminating the need to source separate hardware or tools before starting the job.
- Purpose-built as a replacement bearing set for CMT contractor bits - ensures proper fit and dimensional compatibility, reducing the risk of wobble, misalignment, or premature wear.
Why This Product
- Instead of replacing an entire router bit when a guide bearing wears out, this kit lets you restore the bit to working condition at a fraction of the cost - a practical solution for contractors and woodworkers who want to protect their tool investment.
- Two bearing diameters - 3/8 in. and 1/2 in. - are bundled together, making this kit useful across a range of CMT contractor bit profiles rather than requiring a separate purchase for each size.
- The inclusion of dust shields alongside the bearings means the replacement installation is complete and properly protected from the start, not just a stopgap repair.
- With the hex key already in the kit, there is no need to have a specific tool on hand - the bearing swap can be completed on the spot at the workbench or job site.
Specifications
- Manufacturer Part Number: 79101
- Brand: CMT Orange Tools
- Product Type: Replacement Bearing Kit
- Bearing Sizes Included: 3/8 in. and 1/2 in.
- For Use With: CMT contractor router bits
- Hex Key Size: 2.5mm
- Piece Count: 2-piece bearing set
Approved Applications
- Replacing worn or damaged guide bearings on CMT contractor router bits
- Flush trim bit bearing replacement
- Pattern routing bit bearing replacement
- Rabbeting bit bearing replacement
- Profile bit bearing replacement
What's Included
- 1x 3/8 in. guide bearing
- 1x 1/2 in. guide bearing
- 1x 3/8 in. dust shield
- 1x 1/2 in. dust shield
- 1x screw
- 1x 2.5mm hex key
Frequently Asked Questions
Which CMT router bits is this bearing kit compatible with?
This kit is designed as a replacement bearing set for CMT contractor router bits. It includes both a 3/8 in. and a 1/2 in. bearing to cover multiple bit profiles in the CMT contractor series, including flush trim, pattern, rabbeting, and profile bits.
Do I need any additional tools or hardware to install these bearings?
No additional tools or hardware are required. The kit includes a 2.5mm hex key and a screw alongside the two bearings and their matching dust shields, so everything needed for the bearing replacement is provided in the box.
What do the dust shields do, and why are they important?
The dust shields are protective covers that fit over the bearings to keep sawdust, chips, and fine debris out of the bearing races during routing operations. Keeping contaminants out of the bearing helps maintain smooth rotation and extends the service life of the replacement bearings.
Can I use this kit if only one bearing on my router bit needs replacing?
Yes. Since the kit includes both a 3/8 in. and a 1/2 in. bearing, you can use whichever size matches the worn bearing on your CMT contractor bit and keep the other for a future repair. Both sizes come with their corresponding dust shields as well.
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