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The ACCUPRO 07016546 is a right-hand external grooving toolholder designed for indexable insert grooving operations on CNC lathes and turning centers. Built to GMER style geometry, it accepts a size 4 insert secured by a screw-clamp holding method for reliable repeatability under interrupted cuts. The toolholder features a 1.0000-inch shank height and delivers a maximum depth of cut of 0.9853 inches, making it well suited for moderate to deep external groove profiles. Constructed from steel, it provides the rigidity needed to maintain dimensional accuracy across production runs. Machinists and CNC operators working in general turning applications will find the CI series design straightforward to set up and index.
This toolholder is intended for external grooving operations on turned workpieces in production and job-shop environments. It supports a minimum groove width of 0.1575 inches and a maximum groove width of 0.1575 inches, making it purpose-matched to a specific insert width within that size 4 seat category. The 6-inch overall length suits standard OD turning setups where clearance and overhang are managed through normal toolpost or turret mounting. It is a practical choice for machinists requiring a consistent, indexable grooving solution without custom tooling lead time.
Designed as an OEM-style indexable grooving toolholder compatible with size 4 grooving inserts in the CI series using the GMER toolholder style. Specific insert compatibility should be confirmed against the insert manufacturer seat and width specifications before use.
Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is stopped and all axes are in a safe position before mounting or indexing the toolholder. Secure the shank in the toolpost or turret to the machine manufacturer's specified clamping torque using appropriate tooling hardware. Verify insert seating and screw torque per the insert manufacturer's guidelines before returning the machine to operation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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