Seco 02828376 ER32 HP32 Collet 12 Mm

Product Description

The SECO 02828376 is an ER32 collet in the HP32 high-precision series, designed for use in CNC machining centers, milling machines, and toolholding systems that accept the ER32 collet standard. With a nominal collet size of 12 mm (0.4720 inches) and a total indicator runout (TIR) of 0.003 mm (0.000118 inches), this collet is built for applications where concentricity and repeatability are critical. The overall length is 40 mm and the overall diameter is 33 mm. Installation is handled by machinists and CNC setup technicians working in precision machining environments.

This collet is suited for use in ER32-compatible toolholders found in production machining, tool and die, and general metalworking operations. It accepts 12 mm shank tooling and is appropriate for both roughing and finishing operations where tight runout tolerance is required. The HP32 series designation indicates a higher-precision grade within the ER32 family. Through-coolant is not supported by this collet.

Key Features

• ER32 collet series with HP32 high-precision grade designation
• 12 mm nominal collet size (0.4720 inches decimal equivalent)
• 0.003 mm TIR for high concentricity and consistent tool life
• 40 mm overall length with 33 mm overall diameter
• No through-coolant bore — solid collet body construction
• UNSPSC Code 27112800, Product Service Code 5136

Compatibility

Designed for use in ER32-standard collet chucks and toolholders accepting 12 mm shank tooling.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Before installing or removing a collet, ensure the machine spindle is fully stopped and locked out per standard lockout/tagout procedures. The collet should be seated fully into the ER32 collet nut before tightening. Use a calibrated torque wrench and an appropriate ER collet nut spanner to achieve proper clamping force without over-tightening, which can distort the collet bore and degrade TIR.