Dorian Tool 73310120780 Bump Knurler Square Shank

Product Description

The DORIAN TOOL 73310120780 is an up-to-shoulder bump knurler designed for producing diamond and straight knurl patterns on a lathe. The tool accepts a square shank measuring 3/4 inches wide by 3/4 inches high by 3-1/2 inches long, making it suitable for standard lathe toolpost setups. Two knurl wheels are required and are included with the tool. The knurl wheels measure 1 inch in diameter with a 1/4 inch wide face. This is a modular design from the Series SW product line, allowing wheel replacement without replacing the entire tool body. Machinists and tool-and-die professionals install and use this tool in production and job shop environments.

This bump knurler is intended for use on manual and CNC lathes where up-to-shoulder knurling is required. The up-to-shoulder capability allows the operator to run the knurl pattern close to a shoulder or stepped feature on the workpiece without clearance issues. The included straight knurl wheel pattern suits functional grip surfaces and mechanical fastener applications. The modular Series SW design is suited to shops that knurl a variety of materials and need quick wheel changeovers between jobs.

Key Features

• Up-to-shoulder knurling capability for work adjacent to shoulders or stepped diameters
• Includes 2 knurl wheels - diamond and straight patterns included
• Modular Series SW design supports knurl wheel replacement
• Square shank measures 3/4 inches wide by 3/4 inches high by 3-1/2 inches long
• Knurl wheel face diameter: 1 inch; face width: 1/4 inch
• Ready to use out of the box - no additional wheel purchase required

Compatibility

Designed for use on manual and CNC engine lathes accepting a 3/4 inch square shank toolholder. Compatible with Series SW modular knurl wheel system for future wheel replacement or pattern changes.

Installation Notes

Installation is performed by a machinist or tool-and-die technician familiar with lathe toolpost setups. Secure the square shank in the toolpost or quick-change holder and ensure proper alignment with the workpart centerline before engaging the knurl. Power down and lock out the lathe before changing knurl wheels or adjusting the tool body. Follow the machine tool manufacturer guidelines for feed rate and cross-slide pressure when bump knurling to avoid wheel slippage or workpiece deflection.