CMT Guide Bearing 3/4" OD x 1/2" Bore x 4mm Wide
Series 791
Guide Bearing
CMT 791.011.00 is the exact 3/4-inch outside-diameter variant in the official Series 791 bearing family. It combines a 1/2-inch bore and 4 mm width—equivalent to 19 × 12.7 × 4 mm—for compatible CMT bearing-guided router-bit assemblies. This separately orderable non-cutting accessory is referenced across selected pattern, flush-trim, dado, V-groove, round-nose, moulding, slotting, bowl-and-tray, and insert-router systems.
Main Product Description
CMT 791.011.00 is the exact bearing item in the official Series 791 Spare Parts and Accessories family. The North American variation row specifies a 3/4-inch outside diameter, 1/2-inch bore, and 4 mm width. CMT’s metric table lists the same configuration as 19 × 12.7 × 4 mm.
The bearing functions as a guide or profile-control component on compatible CMT router-bit assemblies. Verified official references include Pattern Router Bit 812.690.11B, Round Nose Router Bit 814.690.11B, 90° V-Grooving Router Bit 815.690.11B, Dado and Planer Bit 852.501.11B, XTREME Flush-Trim Bit 806.690.41B, and double-bearing Flush-Trim Bit 806.690.11B.
Additional official CMT tables reference 791.011.00 across selected moulding, slot-cutter, bowl-and-tray, ovolo-sash, V-tongue-and-groove, straight-insert, and pattern/flush-trim insert-bit systems. The bearing is separately orderable and does not automatically include the parent tool, shield, screw, stop collar, spacer, hex key, or other assembly hardware. CMT requires the black shield to remain right side up during reassembly.
Best Fit Applications
Product Highlights
Exact 3/4-Inch OD Variant
Item Code 791.011.00 is the official Series 791 bearing with a 3/4-inch outside diameter, 1/2-inch bore, and 4 mm width.
Broad Verified CMT Compatibility
Official CMT tables reference this bearing across selected pattern, flush-trim, dado, V-groove, round-nose, moulding, slotting, bowl, joinery, and insert-tool systems.
Official Reassembly Guidance
CMT specifies keeping the black shield right side up during reassembly so the shield orientation corresponds correctly with bearing rotation.
Compatibility & Installation Notes
Confirm exact Item Code 791.011.00 and dimensions 3/4 × 1/2 × 4 mm before installation. Use only on a compatible CMT assembly that explicitly lists this bearing. Inspect the bearing for roughness, play, shield damage, contamination, or binding; replace damaged components. Reassemble with the black shield right side up, use the exact shield, screw, stop collar, spacer, key, or other hardware specified by the parent-tool row, and confirm free bearing rotation before use. The router bit and related fastening hardware are not included.
Verified 3/4-Inch Guide-Bearing Fit for Compatible CMT Tools
CMT 791.011.00 combines a 3/4-inch outside diameter, 1/2-inch bore, and 4 mm width in the official Series 791 replacement-bearing format.
Verified use across multiple CMT router-bit and insert-tool families, together with the official black-shield orientation requirement, completes the service-accessory record.