Iscar 4545001 Tapping Chuck 20mm Straight Shank M3-M10

Product Description

The ISCAR 4545001 is a straight-shank tapping chuck designed for precision tap holding in CNC machining centers and drill-tap operations. It features a 20 mm shank diameter and a projection of 1.6378 inches, positioning the tap at a consistent, repeatable distance from the spindle face. The ER 16 collet system accepts a collet capacity range from 0.0197 inches to 0.3937 inches, covering tap sizes from M3 through M10. The nose diameter measures 1.1024 inches. This chuck is installed by machinists and tool-crib technicians in production and job-shop environments requiring accurate thread forming.

This tapping chuck is suited for vertical and horizontal machining centers, drill-tap machines, and tapping attachments where a straight modular side connection is required. The ER 16 collet system provides secure, concentric grip on taps across the full M3 to M10 capacity range. It is a non-quick-change design, meaning tap changes require collet removal in the standard manner. No through-coolant port is present, making it appropriate for flood-coolant or dry-tapping setups where internal coolant delivery is not required.

Key Features

• 20 mm straight shank with modular side connection for rigid, repeatable positioning
• ER 16 collet system with capacity from 0.0197 inches to 0.3937 inches
• Tap capacity range M3 to M10 covers common threading applications
• Projection of 1.6378 inches for consistent tool-length offset management
• Nose diameter of 1.1024 inches suits standard spindle clearance requirements
• Non-quick-change design for straightforward, stable collet-based tap retention

Compatibility

Designed for use with ER 16 tapping collets on machining centers and tapping machines that accept a 20 mm straight-shank modular side connection interface.

Installation Notes

Installation and tool-change procedures should be performed by a qualified machinist with the spindle fully stopped and the machine in an estop or locked-out state per applicable safety protocols. Torque the collet nut using a calibrated ER collet wrench to manufacturer specification for the collet series. Verify tool-length offset in the control after each chuck or collet change before resuming production. Confirm that the selected ER 16 collet size matches the tap shank diameter before clamping.