Product Description
The CMT Delrin Cylindrical Bearing - 37.4mm Outer Diameter / 12.7mm Bore is a precision replacement bearing engineered specifically for solid surface router bits. Built from Delrin - a durable acetal resin material - this cylindrical bearing delivers smooth, consistent guidance when used on flush trim, pattern, rabbeting, and profile router bit applications. Its accurate dimensions ensure a reliable fit and repeatable results at the router table or with a handheld router, making it the go-to replacement when a worn bearing is causing imprecise cuts or unwanted surface marring.
Key Features
- Delrin construction for solid surface work - the acetal resin material glides cleanly against delicate solid surface workpieces without scuffing or scratching, preserving the finished surface throughout the cut.
- 37.4mm outer diameter - a precisely sized bearing body that determines the offset from the cutting edge, giving you accurate, repeatable edge profiles and flush trim results every time.
- 12.7mm bore diameter - fits the bit shank snugly for a stable, wobble-free mount that keeps the bearing centered and tracking true along the template or workpiece edge.
- 15.7mm plate thickness - provides a substantial contact surface against your guide template or workpiece edge, improving stability and reducing chatter during the routing pass.
- Black shield orientation indicator - the black shield must be kept right side up to correspond with bearing rotation during reassembly, ensuring the bearing seats and spins correctly after replacement.
Why This Product
- Designed specifically for solid surface router bits, this Delrin bearing replaces worn or damaged guide bearings and restores accurate self-guiding performance without the risk of marring sensitive workpiece surfaces.
- The 37.4mm outer diameter and 12.7mm bore are precision-matched specifications that take the guesswork out of finding a compatible replacement - no modification or shimming required for a proper fit.
- Delrin material is well suited to applications where a traditional metal or rubber-contact bearing might leave marks, making this bearing a practical choice for finish-critical solid surface routing tasks.
- The clear reassembly guidance - keep the black shield right side up to match bearing rotation - helps ensure the bearing is reinstalled correctly the first time, reducing downtime at the router table.
Specifications
- Manufacturer Part Number: 791.047.00
- Brand: CMT Orange Tools
- Description: Delrin Cylindrical Bearing 37.4mm - 12.7mm
- Outer Diameter: 1-15/32 in.
- Bore Diameter: 12.7mm
- Plate Thickness: 15.7mm
- Product Type: Router Bit Replacement Bearing
- Material: Delrin (Acetal Resin)
Approved Applications
- Solid surface router bit guide bearing replacement
- Flush trim router bit bearing replacement
- Pattern routing bit bearing replacement
- Rabbeting router bit bearing replacement
- Profile router bit bearing replacement
- Use with handheld router
- Use with router table
Frequently Asked Questions
What is this bearing made of, and why does the material matter?
This bearing is made from Delrin, an acetal resin known for smooth, low-friction performance. Its significance is that it is specifically recommended for solid surface router bits - the Delrin material glides cleanly against solid surface workpieces without scratching or marking the material, which would be a concern with some other bearing types.
Does the orientation of the bearing matter when reassembling?
Yes - the black shield must be kept right side up to correspond with the direction of bearing rotation during reassembly. Installing it upside down could cause the bearing to not function correctly, so always confirm the shield orientation before securing the bearing back onto the bit.
What are the key dimensions of this bearing?
The outer diameter is 1-15/32 in. (approximately 37.4mm), the bore diameter is 12.7mm, and the plate thickness is 15.7mm. These measurements are critical when selecting a replacement bearing - confirm that these dimensions match the original bearing on your router bit before installing.
What types of router bits is this bearing compatible with?
This Delrin cylindrical bearing is designed for solid surface router bits and can serve as a replacement guide bearing on flush trim, pattern, rabbeting, and profile router bits that use the corresponding bearing size. Always verify the outer diameter and bore measurements match your specific bit before replacing.
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