CMT Roundover Router Bit 2-1/2-Inch Diameter × 1-5/16-Inch Cutting Length × 1-Inch Radius × 1/2-Inch Shank
1-Inch Radius
Roundover Router Bit
CMT 838.992.11 is the exact router-table-only variant in the 7/8/938 roundover family. It combines a 1-inch radius, 1-5/16-inch cutting length, 2-1/2-inch cutting diameter, 3-13/64-inch overall length, 1/2-inch shank, carbide-tipped cutting edges, and a serviceable guide-bearing system for large-radius edge profiling.
Main Product Description
CMT 838.992.11 is one exact Item Code within the official 7/8/938 roundover-router-bit family. The verified row specifies a 1-inch profile radius, 1-5/16-inch cutting length, 2-1/2-inch cutting diameter, 3-13/64-inch overall length, and 1/2-inch shank.
CMT builds the family with FATIGUE-PROOF® steel bodies and carbide-tipped cutting edges. The bearing-guided geometry forms a clean large-radius edge profile for table and countertop edges, picture frames, furniture components, and compatible drop-leaf profile work.
The official row restricts this large-diameter variant to router-table use only and identifies bearing 791.003.00, bearing shield 990.423.00, screw 990.058.00, and hex key 991.057.00 as its matching service components.
Best Fit Applications
Product Highlights
Verified 1-Inch Radius
Exact Item Code 838.992.11 combines a 1-inch radius, 1-5/16-inch cutting length, and 2-1/2-inch diameter.
Router-Table-Only Format
CMT explicitly restricts this large-diameter roundover variant to compatible router-table installations.
Serviceable Bearing System
CMT publishes exact matching codes for the guide bearing, shield, screw, and hex key used with this variant.
Compatibility & Installation Notes
CMT 838.992.11 is for router-table use only; do not use it in a handheld router or select it by the 7/8/938 family heading alone. Confirm a clean compatible 1/2-inch collet, suitable fence and guarding, secure workholding, adequate clearance for the 2-1/2-inch diameter, correct bearing assembly, and all applicable router-table and tool operating limits before use.
Large-Radius Roundover Profiling for Compatible Router Tables
CMT 838.992.11 combines a 1-inch radius, 1-5/16-inch cutting length, 2-1/2-inch diameter, 3-13/64-inch overall length, 1/2-inch shank, and carbide-tipped bearing-guided geometry.
Accurate Item Code selection, router-table compatibility, collet fit, bearing condition, cutter clearance, guarding, workholding, and equipment limits are essential to consistent large-radius edge profiling.