Product Description
The CMT Delrin Cylindrical Bearing 5/8" - 3/16" is a precision replacement bearing engineered for solid surface router bits, providing smooth, guided cuts along templates and workpiece edges. Designed by CMT for use with flush trim, pattern, rabbeting, and profile routing applications, this cylindrical bearing keeps your router bit tracking accurately so you get clean, repeatable results every time. Whether you are restoring worn guide bearings or upgrading an existing bit, this Delrin-style bearing is built to match the original specifications of compatible CMT router bits.
Key Features
- Delrin cylindrical bearing construction - purpose-built for solid surface router bits, delivering consistent contact and reduced friction as the bit tracks along a guide edge or template
- 5/8" outer diameter - matches the original bearing geometry on compatible CMT bits, so the replacement fits precisely without affecting cut depth or profile alignment
- 4.76mm bore diameter - sized to seat correctly on the bit shaft, eliminating wobble and ensuring stable, centered rotation during use
- 7.2mm plate thickness - provides a substantial contact surface along the bearing face, which helps maintain even pressure against a template or straightedge for guided routing passes
- Black shield orientation matters - the bearing includes a directional shield that must be kept right side up to correspond with bearing rotation during reassembly, protecting internal components and extending service life
Why This Product
- Restores accurate template-following performance on worn or damaged CMT router bits - bringing a bit back to original spec costs far less than replacing the entire tool
- Delrin bearing material is specifically suited to solid surface routing, where smooth, low-friction guidance is critical to preventing tear-out or edge marking on finished material
- Precise bore diameter of 4.76mm and outer diameter of 5/8" ensure a drop-in fit on compatible CMT router bits without guesswork or modification
- Clear reassembly guidance - the directional black shield removes uncertainty during bearing replacement, helping you get the bit back in service correctly the first time
Specifications
- Manufacturer Part Number: 791.045.00
- Brand: CMT Orange Tools
- Diameter: 5/8"
- Bore Diameter: 4.76mm
- Plate Thickness: 7.2mm
- Product Type: Delrin Cylindrical Bearing
Approved Applications
- Replacement bearing for solid surface router bits
- Guide bearing restoration on flush trim router bits
- Pattern routing bit bearing replacement
- Rabbeting and profile bit bearing service and maintenance
Frequently Asked Questions
What is a Delrin bearing and why is it used on router bits?
A Delrin bearing is a cylindrical bearing made from a low-friction polymer material, well suited to solid surface router bit applications. It provides smooth, consistent contact as the bearing rides along a template or workpiece edge, reducing friction and helping guide the bit accurately without marring finished surfaces.
Does the orientation of the black shield matter during reassembly?
Yes - the black shield must be kept right side up to correspond with the bearing rotation during reassembly. Installing the shield in the wrong orientation can interfere with proper bearing function, so take care to note its position before removing the old bearing.
What are the key dimensions of this bearing?
This bearing has an outer diameter of 5/8", a bore diameter of 4.76mm, and a plate thickness of 7.2mm. Confirming these dimensions against your router bit's original bearing spec will help ensure a correct fit before installation.
What types of router bits is this bearing compatible with?
This bearing is designed for use with solid surface router bits and serves as a guide bearing on bit styles including flush trim, pattern, rabbeting, and profile bits that use a matching cylindrical bearing format.
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