Product Description
The CMT 791.017.00 Bearing 7/8" - 3/16" is a precision steel replacement bearing designed to restore smooth, accurate self-guiding performance to CMT router bits. Whether you are refreshing a worn guide bearing on a flush trim bit, a pattern bit, a rabbeting bit, or a profile bit, this replacement bearing delivers the reliable fit and rotation needed to keep your cuts tracking true along a template or workpiece edge.
Key Features
- Steel construction - provides the durability and rigidity required to withstand the lateral forces generated during router bit guiding, giving you consistent edge-following performance over extended use.
- 7/8" outer diameter - matches the specified bearing seat on compatible CMT router bits, ensuring a secure, rattle-free fit that maintains precise depth and edge registration.
- 4.76mm bore diameter - sized to fit the corresponding pilot pin or shaft on applicable CMT router bits, keeping the bearing centered and stable during operation.
- 7.5mm plate thickness - maintains the correct cutting geometry and offset when used as a guide bearing replacement, so your router bit performs as intended.
- Black shield orientation requirement - the black shield must be kept right side up to correspond with bearing rotation during reassembly, ensuring proper sealing and lubrication retention for long service life.
Why This Product
- Restoring a worn or seized guide bearing with this direct-fit replacement extends the usable life of your CMT router bit rather than requiring a full bit replacement - a practical, cost-effective solution for shops that run router bits hard.
- With a precisely matched 7/8" outer diameter and 4.76mm bore, this bearing is dimensionally specific to compatible CMT router bits, eliminating the guesswork of finding a generic substitute that may not seat correctly.
- Steel construction means the bearing can handle the rotational speeds and lateral guide pressure common to flush trim, pattern, rabbeting, and profile routing applications without deforming or wearing prematurely.
- The defined plate thickness of 7.5mm preserves your bit's original cutting geometry after reassembly, so you do not need to re-set your depth of cut or adjust your router table fence when swapping in the replacement bearing.
Specifications
- Manufacturer Part Number: 791.017.00
- Brand: CMT Orange Tools
- Product Type: Router Bit Replacement Bearing
- Outer Diameter: 7/8"
- Bore Diameter: 4.76mm
- Plate Thickness: 7.5mm
- Material: Steel
Approved Applications
- Replacing worn or damaged guide bearings on CMT router bits
- Flush trim bit bearing replacement
- Pattern bit bearing replacement
- Rabbeting bit bearing replacement
- Profile bit bearing replacement
- Use in handheld routers and router tables
Frequently Asked Questions
Does the orientation of the bearing matter during reassembly?
Yes. The black shield must be kept right side up to correspond with the bearing rotation during reassembly. Incorrect orientation can affect the bearing's sealing and long-term performance, so take care to note the shield position before disassembly.
What types of router bits is this bearing used with?
This bearing is used as a guide bearing on flush trim bits, pattern bits, rabbeting bits, and profile bits. It is a replacement and upgrade bearing for compatible CMT router bits with the corresponding bore and diameter specifications.
What are the key dimensions of this bearing?
The bearing has a 7/8" outer diameter, a 4.76mm bore diameter, and a plate thickness of 7.5mm. Confirming these dimensions against your existing bearing before ordering ensures a correct fit for your specific CMT router bit.
Can this bearing be used in both handheld routers and router tables?
Yes. Because this is a guide bearing component mounted on the router bit itself rather than on the machine, it is compatible with use in both handheld routers and router tables, wherever the compatible CMT router bit is being operated.
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