ER11 Extension Rod Tool Holder Collet Chuck for DIY CNC 3 Axis Engraver Machine

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This is a Motor Shaft Extension Rod Tool Holder Collet Chucks for DIY CNC 3 Axis Engraver Machine PCB Milling Wood Carving Router Kit Arduino Grbl.

It contains two parts, an ER11-A 5mm extension rod and a collet chuck. It has very high accuracy and convenient operation. Use high-quality carbon steel, after heat treatment, has good flexibility and abrasion resistance. The clamping force and

good gripping stability can effectively reduce the vibration generated at work. It can be for gripping the drill, boring knife, chisel, reamers and other tools.

DSC 2760.jpg

Collet 1.jpg


Chuck 3.jpg




1. Put the chuck into the pressure cap, gently turn the clamp spring, when eccentric portion of the pressure cap recessed clamp spring groove. Along the arrow direction and use equal force to push clamp spring, can mount pressure cap.

2. Put the clamp spring and cap all together installed on the chuck body or spindle. Insert into the clamping hole after wipe the cylindrical shank, use a wrench to tighten the pressure cap, until clip firmly the tool before use.


Assemble Motor Shaft Extension Rod Toolholder Collet Chuck