Product Description
The CMT 791.019.00 Bearing 3/4" - 3/16" is a precision replacement router bit bearing designed to restore smooth, accurate self-guiding performance to flush trim, pattern, rabbeting, and profile router bits. Built from steel for lasting durability, this guide bearing fits a 3/4" outer diameter with a 4.76mm bore and a 7.5mm plate thickness - delivering the precise dimensional compatibility needed to keep your router bits tracking cleanly along templates and workpiece edges. Whether you are refreshing a worn bearing on a well-used bit or upgrading an existing setup, this CMT replacement bearing is engineered to match the rotation and fit requirements of CMT router bit applications.
Key Features
- Steel construction - provides the strength and wear resistance needed to withstand the friction and heat generated during repeated router bit passes, extending the service life of your guide bearing.
- 3/4" outer diameter - matches the dimensional requirements of compatible CMT router bits, ensuring the bearing seats properly and guides against templates or workpiece edges with consistency.
- 4.76mm bore diameter - sized for precise fitment onto the router bit shank, reducing play and maintaining accurate alignment during routing operations.
- 7.5mm plate thickness - delivers the correct depth profile for proper seating within the router bit assembly, keeping the bearing flush and stable during use.
- Black shield orientation requirement - the black shield must be kept right side up to correspond with the correct bearing rotation during reassembly, ensuring smooth operation and preventing premature wear after installation.
Why This Product
- A worn or damaged guide bearing causes drift, tear-out, and inaccurate profiles - replacing it with a correctly dimensioned steel bearing restores the clean, self-guiding performance your router bit was designed to deliver.
- The 3/4" outer diameter and 4.76mm bore are specific to CMT router bit compatibility, meaning you get a direct-fit replacement without the guesswork of adapting a generic bearing to your bit.
- At 7.5mm plate thickness, this bearing provides the proper seating depth to keep your router bit assembly stable and balanced, reducing vibration and improving cut quality on flush trim, pattern, and profile work.
- Steel construction means this guide bearing holds up through extended routing sessions on routers and router tables alike, making it a practical choice for woodworkers who put their bits to regular use.
Specifications
- Manufacturer Part Number: 791.019.00
- Brand: CMT Orange Tools
- Product Type: Router Bit Replacement Bearing
- Diameter: 3/4"
- Bore Diameter: 4.76mm
- Plate Thickness: 7.5mm
- Material: Steel
Approved Applications
- Replacing worn guide bearings on CMT router bits
- Use on flush trim bits guided along workpiece edges or templates
- Use on pattern bits for accurate template-following cuts
- Use on rabbeting bits as a guide bearing for consistent rabbet depth
- Use on profile bits for smooth, self-guided decorative cuts
- Compatible with routers and router tables
Frequently Asked Questions
What is the bore diameter of the CMT 791.019.00 bearing?
The bore diameter of this replacement bearing is 4.76mm, sized for precise fitment onto compatible CMT router bit shanks to minimize play and maintain accurate alignment during routing.
Is there a correct orientation when reassembling this bearing onto a router bit?
Yes. The black shield must be kept right side up to correspond with the correct bearing rotation during reassembly. Installing the shield in the wrong orientation can cause the bearing to run improperly and wear prematurely.
What types of router bits is this bearing used with?
This guide bearing is used on CMT router bits including flush trim bits, pattern bits, rabbeting bits, and profile bits - any bit that relies on a guide bearing to follow a template or workpiece edge.
What machines can I use this replacement bearing with?
This bearing is compatible with handheld routers and router tables, making it a versatile replacement part for both freehand and table-mounted routing setups.
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