Collis Tool 85510 Type C Rotary Tool Holder Bushing

Product Description

The COLLIS TOOL 85510 is a Type C rotary tool holder bushing designed for use in toolholding and machining setups. It features a 0.250-inch inside diameter, a 1.000-inch outside diameter, and a length under head of 2.750 inches. The head thickness measures 0.1875 inches, and the slot length runs 2.375 inches. This bushing provides a precision interface between a rotating tool and its holder, helping maintain accurate tool positioning during machining operations. It is installed by machinists and toolroom technicians in CNC or manual machine tool applications.

This Type C bushing is suited for use in drill press, milling, and lathe toolholding systems that accept standard bushing configurations. The 1/4-inch bore accommodates common small-diameter cutting tools, drills, and round-shank tooling. Its slotted design is consistent with drive-type bushing applications where rotational engagement is required. The compact head and extended length under head make it appropriate for applications requiring a flush or near-flush seating arrangement in a tool holder or jig plate.

Key Features

• Type C bushing configuration for drive-type toolholding applications
• 0.250-inch inside diameter accommodates common small-diameter round-shank tooling
• 1.000-inch outside diameter for standard bushing seat fitment
• 2.750-inch length under head provides extended reach in deep holder or jig configurations
• 2.375-inch slot length for positive rotational drive engagement
• 0.1875-inch head thickness for low-profile seating

Compatibility

Designed as an OEM-style replacement bushing for toolholding systems that accept Type C rotary tool holder bushings with a 1-inch outside diameter and 1/4-inch inside diameter bore.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine before removing or installing any toolholding component. Confirm that the bushing bore and outside diameter match the tool shank and holder seat dimensions before pressing or inserting the bushing. Avoid forcing mismatched components, as this can damage the holder seat or compromise tool concentricity.