Product Description
The CMT Delrin Cylindrical Bearing - 3/4" Diameter with 3/16" Bore is a precision replacement bearing designed specifically for solid surface router bits. Built from Delrin, a durable acetal polymer material, this cylindrical bearing delivers smooth, consistent guidance along templates and workpiece edges, making it an ideal choice for woodworkers and fabricators who demand accuracy and reliability from their routing accessories. Whether you are restoring a worn flush trim bit or maintaining a pattern bit setup, this CMT bearing is engineered to keep your routing operations running with precision and control.
Key Features
- Delrin construction for solid surface router bits - the Delrin acetal material provides smooth, low-friction guidance suited to solid surface applications, reducing heat buildup and protecting delicate workpiece edges.
- 3/4" outer diameter - matches the original bearing profile on compatible CMT router bits, ensuring proper fit and consistent edge-following performance without modification.
- 4.76mm bore diameter - precisely sized to mount securely on the bit shaft, eliminating play or wobble that could compromise cut quality.
- 6.8mm plate thickness - provides a stable, full-contact bearing surface that distributes load evenly during routing passes.
- Black shield orientation required during reassembly - the directional black shield must be kept right side up to correspond with bearing rotation, ensuring proper function and long service life after installation.
Why This Product
- Designed specifically as a Delrin bearing for solid surface router bits, this component is the correct replacement choice when working with solid surface materials where standard steel bearings may cause marking or friction-related issues.
- With a precise 4.76mm bore and 3/4" outer diameter, this bearing is dimensionally matched to CMT router bit specifications, so you get a reliable fit without guesswork or costly trial-and-error.
- The 6.8mm plate thickness ensures the bearing maintains full contact along the guide surface, reducing the risk of chatter or uneven cuts during flush trim, pattern, and profile routing operations.
- Keeping the bearing in good condition is straightforward - the reassembly orientation guidance (black shield right side up) helps you restore the bit correctly the first time, minimizing downtime between jobs.
Specifications
- Manufacturer Part Number: 791.046.00
- Brand: CMT Orange Tools
- Product Type: Delrin Cylindrical Bearing
- Outer Diameter: 3/4"
- Bore Diameter: 4.76mm
- Plate Thickness: 6.8mm
- Compatible Bit Types: Solid surface router bits
Approved Applications
- Replacing worn or damaged guide bearings on solid surface router bits
- Flush trim routing operations requiring low-friction edge guidance
- Pattern routing where smooth, consistent bearing contact is critical
- Rabbeting and profile bit maintenance requiring a correctly sized cylindrical bearing
Frequently Asked Questions
What type of material is this bearing made from, and why does it matter for solid surface work?
This bearing is made from Delrin, a durable acetal polymer. Delrin provides low-friction, smooth guidance that is well-suited for solid surface routing, where a metal bearing could generate excess friction or leave marks on the material surface.
Is there an important step to follow when reassembling the bearing onto a router bit?
Yes - the black shield must be kept right side up to correspond with the direction of bearing rotation during reassembly. Following this orientation is essential for proper bearing function and longevity after installation.
What are the key dimensions of this bearing?
The outer diameter is 3/4", the bore diameter is 4.76mm, and the plate thickness is 6.8mm. These dimensions make it a direct-fit replacement for compatible CMT solid surface router bits.
What types of router bits is this bearing designed for?
This Delrin cylindrical bearing is designed for solid surface router bits. It is commonly used on flush trim, pattern, rabbeting, and profile bits where a replacement guide bearing of this diameter and bore size is required.
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