Product Description
The CMT 791.003.00 Bearing 1/2" - 3/16" is a precision replacement router bit bearing designed to restore smooth, accurate self-guiding performance on flush trim, pattern, rabbeting, and profile router bits. Built from durable steel, this guide bearing keeps cuts consistent and controlled by riding cleanly along templates or workpiece edges - making it an essential maintenance part for any router bit collection. Whether you are replacing a worn ball bearing on a handheld router or a router table setup, this CMT replacement bearing delivers the reliability needed to maintain tight tolerances and repeatable results.
Key Features
- Steel construction - provides the durability and strength needed to withstand continuous contact loads during routing operations, extending the service life of your router bits.
- 1/2" outer diameter - a compact profile that fits precisely within the designated bearing seat on compatible CMT router bits, ensuring correct alignment against templates and workpiece edges.
- 4.76mm bore diameter - sized to accept the corresponding bit pilot or shank diameter, keeping the bearing centered and minimizing wobble during cutting passes.
- 5mm plate thickness - a consistent thickness that maintains the proper height relationship between the cutting edge and the guide surface, preserving cut depth accuracy.
- Black shield orientation matters - the black shield must be kept right side up to correspond with bearing rotation during reassembly, ensuring the bearing operates correctly after servicing.
Why This Product
- Restores accurate edge-guiding on flush trim, pattern, rabbeting, and profile bits - replacing a worn bearing brings your existing router bits back to full working precision without replacing the entire bit.
- Steel construction ensures the bearing stands up to repetitive edge contact in demanding routing applications, making it a dependable replacement choice for both handheld router and router table use.
- With a precisely specified 4.76mm bore and 5mm plate thickness, this bearing matches the dimensional requirements needed for a proper fit - reducing the risk of misalignment or play after installation.
- Straightforward reassembly guidance - the black shield orientation instruction means you can service your router bits with confidence, getting the bearing running in the correct direction the first time.
Specifications
- Manufacturer Part Number: 791.003.00
- Brand: CMT Orange Tools
- Product Type: Router Bit Bearing
- Outer Diameter: 1/2"
- Bore Diameter: 4.76mm
- Plate Thickness: 5mm
- Material: Steel
Approved Applications
- Replacing worn guide bearings on flush trim router bits
- Replacing worn guide bearings on pattern router bits
- Replacing worn guide bearings on rabbeting router bits
- Replacing worn guide bearings on profile router bits
- Use with handheld routers and router tables
Frequently Asked Questions
What types of router bits is this bearing compatible with?
This replacement bearing is designed for use with flush trim, pattern, rabbeting, and profile router bits that require a 1/2" outer diameter guide bearing with a 4.76mm bore and 5mm plate thickness.
Is there a specific orientation required when reassembling this bearing?
Yes - the black shield must be kept right side up to correspond with the bearing rotation during reassembly. Following this orientation ensures the bearing functions correctly after the replacement is complete.
What material is this bearing made from?
This bearing is made of steel, which provides the strength and durability needed to handle the continuous contact forces generated during routing operations along templates and workpiece edges.
Can this bearing be used on a router table as well as a handheld router?
Yes - this guide bearing is suitable for use with both handheld routers and router table setups, making it a versatile replacement part for workshop environments where bits are used across multiple platforms.
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