Micro 100 QTSP-187-750 Boring Grooving Bar Holder

Product Description

The MICRO 100 QTSP-187-750 is a quick change boring and grooving bar holder designed for precision machining applications. This holder features a 3/16 inch (0.1875 inch) inside diameter and a 3/4 inch (0.7500 inch) outside diameter, with an overall length of 2.8 inches. Built for use with QTSP-series quick change tooling systems, it includes through-coolant capability to direct cutting fluid directly to the cutting zone, improving chip evacuation and tool life during boring and grooving operations. Machinists and CNC operators working with close-tolerance bores and internal grooving applications will find this holder a reliable fit for production and job-shop environments.

The QTSP-187-750 is suited for use on CNC lathes and turning centers where quick change tooling systems are employed. Its compact 2.8 inch overall length makes it appropriate for tight clearance setups. The through-coolant feature is particularly useful in deep-bore and grooving scenarios where flood coolant alone does not provide adequate chip control at the cutting edge. This holder is intended for professional machinists and toolroom technicians working in metal-cutting environments.

Key Features

• Quick change design for fast, repeatable tool changeovers on the QTSP series system
• Through-coolant capability directs fluid to the cutting edge for improved chip evacuation
• Inside diameter of 3/16 inches (0.1875 inches) for precise bore bar seating
• Outside diameter of 3/4 inches (0.7500 inches) for standard machine interface fitment
• Compact overall length of 2.8 inches for use in confined setups

Compatibility

Designed for use with MICRO 100 QTSP-series quick change boring and grooving tooling systems on CNC lathes and turning centers that accept 3/4 inch outside diameter toolholders.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the turret is in a safe indexed position before mounting or removing tool holders. Verify that the through-coolant passages are clear and properly aligned with the machine coolant supply before beginning a cut. Follow the machine tool manufacturer torque and clamping guidelines for the quick change system in use.