Product Description
The CMT 10 deg. Delrin Conical Bearing - 3/4" outer diameter with a 3/16" bore is a precision replacement guide bearing designed for use with CMT router bits. Built from steel and shaped in a conical profile, this bearing serves as a reliable guide component on flush trim, pattern, rabbeting, and profile router bits - helping maintain accurate, consistent contact along templates and workpiece edges during routing operations.
Key Features
- Steel construction - provides durability and resistance to the mechanical stresses encountered during high-speed router bit operation, extending the service life of your guide bearing.
- 10 deg. conical bearing geometry - the angled profile allows the bearing to make precise contact with tapered or angled workpiece surfaces, giving you accurate guidance in conical routing applications.
- Delrin bearing material - Delrin offers smooth, low-friction performance that reduces heat buildup and wear during extended routing sessions, keeping your cuts clean and consistent.
- 3/4" outer diameter - matches the standard CMT router bit bearing seat sizing, ensuring a correct, snug fit without modification.
- 4.76mm bore diameter - precisely sized to fit the corresponding router bit shank, minimizing wobble and maintaining tight tolerances for accurate guiding.
- 6.8mm plate thickness - provides the correct seating depth for proper bearing alignment on compatible CMT router bits, preventing uneven wear or misalignment during use.
- Black shield orientation requirement - the black shield must be kept right side up to correspond with bearing rotation during reassembly, ensuring the bearing functions correctly after replacement and protecting internal components.
Why This Product
- When a guide bearing on a flush trim, pattern, or rabbeting bit wears out, the entire bit can drift and ruin workpieces - replacing the bearing with this CMT-specific conical bearing restores precise self-guiding performance at a fraction of the cost of a new bit.
- The 10 deg. conical profile addresses a specific routing need that standard flat bearings cannot - this geometry is built for conical routing tasks where an angled guide surface is required for accurate results.
- With exact dimensional specifications of 3/4" outer diameter, 4.76mm bore, and 6.8mm plate thickness, this bearing is engineered to fit CMT router bit assemblies without guesswork or modification, reducing setup time and risk of improper fitment.
- The Delrin material and steel construction work together to give this replacement bearing smooth rotation and long-term durability, making it a practical choice for both occasional home workshop use and frequent production routing environments.
Specifications
- Manufacturer Part Number: 791.041.00
- Brand: CMT Orange Tools
- Product Type: Router Bit Bearing
- Bearing Angle: 10 deg.
- Bearing Material: Delrin
- Body Material: Steel
- Outer Diameter: 3/4"
- Bore Diameter: 4.76mm
- Plate Thickness: 6.8mm
Approved Applications
- Replacing worn or damaged guide bearings on CMT router bits
- Use with flush trim router bits
- Use with pattern router bits
- Use with rabbeting router bits
- Use with profile router bits
- Conical bearing guide applications requiring a 10 deg. angled contact profile
Frequently Asked Questions
What is the difference between a Delrin conical bearing and a standard flat router bit bearing?
A Delrin conical bearing features an angled - in this case 10 deg. - profile rather than a flat cylindrical edge. This allows the bearing to guide along tapered or angled surfaces where a standard flat bearing would not make proper contact. The Delrin material also provides smooth, low-friction rotation suited to router bit guiding applications.
Is there a specific orientation I need to follow when reassembling this bearing?
Yes. The black shield must be kept right side up to correspond with the bearing rotation during reassembly. Reversing the shield orientation can interfere with proper bearing function, so take care to note the correct direction before disassembly.
Which router bit types is this bearing compatible with?
This bearing is used as a guide bearing on flush trim, pattern, rabbeting, and profile router bits. It is a replacement and upgrade bearing intended for CMT router bits with a bearing seat matching the 3/4" outer diameter and 4.76mm bore specifications of this part.
Can this bearing be used in both a handheld router and a router table?
Yes. Because this is a replacement guide bearing that mounts directly onto the router bit - rather than a machine-specific component - it functions the same way whether the router bit is used in a handheld router or mounted in a router table.
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