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The TECHNIKS 33111 is an ER11 collet nut designed to secure ER11 series collets within compatible toolholders on CNC machining centers, milling machines, and high-speed spindles. The nut threads onto the toolholder nose and clamps the collet under axial load, maintaining precise tool grip during cutting operations. At 0.1 pounds, it is a lightweight but critical retention component. This part does not support coolant-through configurations. Installation is performed by machinists and tool crib technicians as part of standard toolholder assembly and tool change procedures.
The TECHNIKS 33111 is suited for use in job shops, production machining environments, and toolroom applications where ER11 collet toolholders are in service. The ER11 collet series accommodates small-diameter tooling and is commonly found on high-speed spindle units, bench-top CNC mills, and precision drilling setups. This nut is sold individually and is a direct replacement or spare retention component for any ER11-compatible toolholder requiring a new collet nut.
Designed as a direct-fit retention nut for ER11 series collet toolholders requiring a standard collet nut replacement.
Installation is performed by a machinist or toolroom technician using an ER collet nut spanner wrench sized for the ER11 nut. The spindle must be fully stopped and the machine placed in an e-stop or lockout state before toolholder service. Hand-thread the nut onto the toolholder nose before applying final torque with the spanner wrench. Do not use impact tools or substitute wrenches, as these can damage the nut threads or collet seating surfaces.
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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