Seco 75042065 ER16 Collet 3 Mm Bore

Product Description

The SECO 75042065 is an ER16 series collet designed to hold 3 mm diameter tooling in compatible ER16 collet chucks. It delivers a total indicator runout (TIR) of 0.01 mm (0.000394 inches), making it suitable for precision milling, drilling, and reaming operations where concentricity matters. The collet has an overall length of 27 mm and an overall diameter of 17 mm. It does not include through-coolant capability. This collet is installed by machinists and CNC toolroom technicians working with ER16 chuck systems on machining centers, lathes, and multi-axis equipment.

The SECO 75042065 is used in CNC and manual machining environments where ER16 collet chucks are the standard workholding interface. Typical applications include light to medium milling, drilling, and high-speed spindle work requiring accurate tool runout. The 3 mm bore size accommodates small-diameter end mills, drills, and reamers commonly used in die-and-mold, aerospace component, and general precision machining setups.

Key Features

• ER16 collet series for use with standard ER16 chuck bodies
• 3 mm bore size accommodates small-diameter cutting tools
• 0.01 mm TIR for consistent concentricity in precision operations
• 27 mm overall length with 17 mm overall diameter
• No through-coolant passage — solid collet body construction

Compatibility

Designed as a direct-fit replacement collet for standard ER16 collet chuck bodies requiring a 3 mm bore size.

Installation Notes

ER collets are installed by toolroom technicians or machinists using an ER16-compatible collet nut and chuck body. Always inspect the collet bore, taper, and nut seating surface for wear or debris before installation. Torque the collet nut using a calibrated spanner wrench per the chuck manufacturer specification. Never exceed the spindle speed rating of the chuck system in which this collet is installed.