Sumitomo U101740 Mwln Turning Toolholder Wnmg 432

Product Description

The SUMITOMO U101740 is a right-hand MWLN-style indexable turning toolholder with a negative rake angle of -5 degrees. It accepts WNMG 432 inserts secured by a clamp and pin holding method, providing rigid, repeatable positioning during external turning operations. The shank measures 1 inch wide by 1 inch tall with an overall length of 6 inches. This toolholder is designed for use on CNC lathes and manual turning centers where controlled, negative-rake cutting geometry is required. Installation and setup are handled by machining technicians and toolroom professionals.

This toolholder is suited for external turning applications in both production and job-shop environments. The right-hand cutting direction makes it compatible with standard spindle rotation on conventional lathe setups. With a head length of 1.25 inches and a back-of-bar to cutting edge distance of 1.25 inches, it positions the WNMG 432 insert precisely for consistent depth-of-cut control. It is part of the Sumitomo Multi-Option series, intended for shops that standardize on WNMG insert geometry across multiple operations.

Key Features

• MWLN toolholder style with -5 degree negative rake angle for controlled chip formation
• Accepts WNMG 432 inserts — secured by clamp and pin method for positive insert location
• Right-hand cutting direction for standard lathe spindle rotation
• 1 inch by 1 inch shank cross-section for use in standard tool posts and turrets
• 6 inch overall length with 1.25 inch head length and 1.25 inch back-of-bar to cutting edge
• No coolant-through — designed for external coolant delivery or dry cutting setups

Compatibility

Designed to accept WNMG 432 inserts. Part of the Sumitomo Multi-Option series for external turning applications requiring negative-rake MWLN geometry.

Installation Notes

This toolholder is installed and set by qualified machinists or toolroom technicians. Ensure the lathe or turning center is fully powered down and locked out before changing toolholders or inserts. Verify that the shank fits the tool post or turret pocket to the correct depth and that clamping hardware is torqued according to the machine manufacturer's specifications. Inspect the clamp and pin components for wear before seating a new insert.