Product Description
CMT Bearing 28mm - 8mm is a precision steel replacement bearing designed to restore smooth, accurate self-guiding performance to CMT router bits. Whether you are refreshing a worn guide bearing on a flush trim bit, a pattern bit, a rabbeting bit, or a profile bit, this replacement bearing keeps your cuts running true along template and workpiece edges. The steel construction and precision fit make it a reliable choice for both router table and handheld router setups where consistent edge tracking is critical.
Key Features
- Steel construction - provides the durability and strength needed to withstand the rotational forces and friction generated during routing operations, extending service life.
- 28mm outer diameter - matches the original bearing profile on compatible CMT router bits, ensuring correct offset and cut depth without any adjustment needed.
- 8mm bore diameter - sized to fit securely onto the bit shaft, maintaining concentricity and eliminating wobble during high-speed operation.
- 9mm plate thickness - provides adequate contact surface against templates and workpiece edges, keeping the bearing stable and reducing the risk of tipping or skipping during a pass.
- Black shield design - must be oriented correctly during reassembly to correspond with bearing rotation, ensuring the bearing performs as intended and stays properly protected.
Why This Product
- Restores accurate self-guiding performance on flush trim, pattern, rabbeting, and profile bits - replacing a worn bearing is a fast, low-cost fix that brings a router bit back to full working precision without replacing the entire bit.
- The 28mm outer diameter and 8mm bore are purpose-matched to CMT router bit specifications, so there is no guesswork about fit or compatibility when swapping out a worn part.
- Steel construction means this bearing stands up to the demands of repeated routing passes across hardwood, engineered wood, and other common workpiece materials.
- Works with both handheld routers and router tables, giving woodworkers flexibility to use the same replacement bearing across different setups in their shop.
Specifications
- Manufacturer Part Number: 791.037.00
- Brand: CMT Orange Tools
- Product Type: Router Bit Bearing
- Diameter: 28mm
- Bore Diameter: 8mm
- Plate Thickness: 9mm
- Material: Steel
Approved Applications
- Replacing worn guide bearings on CMT flush trim router bits
- Replacing worn guide bearings on CMT pattern router bits
- Replacing worn guide bearings on CMT rabbeting router bits
- Replacing worn guide bearings on CMT profile router bits
- Use with handheld routers
- Use with router tables
Frequently Asked Questions
What size router bit shafts is this bearing compatible with?
This bearing has an 8mm bore diameter, which is the dimension that fits onto the router bit shaft. Verify that your CMT router bit uses an 8mm shaft at the bearing seat before ordering.
Is there a specific way the bearing must be installed during reassembly?
Yes. The black shield must be kept right side up to correspond with the bearing rotation during reassembly. Incorrect orientation can affect bearing performance, so take note of the shield direction before removing the old bearing.
What router bit types use this style of guide bearing?
This bearing is used as a guide bearing on flush trim bits, pattern bits, rabbeting bits, and profile bits. These bit types rely on the bearing to track along a template or workpiece edge and control the cut path.
Can this bearing be used in both handheld router and router table applications?
Yes. This replacement bearing is suitable for use in both handheld router and router table setups, as long as the host router bit matches the 28mm outer diameter and 8mm bore specifications.
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