Widia 6740388 Indexable Grooving Blade Left Hand

Product Description

The WIDIA 6740388 is a left-hand indexable grooving blade from the WGCRM-B series, designed for grooving and cut-off operations on CNC lathes and turning centers. Built from steel, this single-end modular blade accepts WC, WG, and WR style inserts held by a clamp mechanism. It handles a minimum groove width of 0.1250 inches and a maximum depth of cut of 0.7500 inches, making it a reliable choice for precision internal and external grooving work. The blade is suited for machinists and tooling specialists working in production or job-shop turning environments.

This blade is applied in grooving and cut-off operations on workpieces ranging from 2.25 inches minimum to 16 inches maximum diameter. It is used in modular tooling systems where quick insert changes and repeatable positioning are required. The left-hand cutting direction suits applications where the spindle rotation or tool approach requires a climb-cut orientation on the workpiece. Compatible insert size code is 3, keeping insert selection straightforward within the WIDIA WC, WG, and WR insert families.

Key Features

• Left-hand cutting direction for specific spindle and approach configurations
• Modular blade style supports fast insert indexing and system flexibility
• Clamp-style insert holding method provides secure seating under cutting loads
• Accepts WC, WG, and WR insert styles in size code 3
• Maximum depth of cut of 0.7500 inches suits a wide range of groove depths
• Steel blade construction for durability in turning applications

Compatibility

Compatible with WC, WG, and WR style inserts in insert size code 3. Designed for use within the WGCRM-B series modular grooving system on workpieces from 2.25 inches to 16 inches in diameter.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. The blade should be mounted in the appropriate modular toolholder per the tooling system specifications, with the machine powered down and locked out before any tooling changes. Confirm insert seating and clamp torque using the tooling manufacturer's setup guidelines before returning the machine to operation. Verify cutting direction and tool offset registration in the machine control before taking the first cut.