Mount ER collet chuck firmly according to "HOW TO MOUNT" in this manual. Otherwise, the tool holder might be loosened, which may eventually result in serious bodily injuries or accidents for user.

Check and confirm the tool is clamped firmly by the tool holder before starting operation. Improper clamping of the tool will cause its abnormal run out, breakage or detaching of tool holder, which may result in serious injuries or accidents for user.

Please use the proper tool holder to clamp the tool to avoid its abnormal run out and tool dropping off, which may result in serious injuries or accidents for user.

DO NOT change the tool on the spindle to avoid causing serious accidents and injuries for user due to turning idly in the spindle itself. When idling, please turn power off or press emergency stop.

DO NOT touch the tool or the tool holder when rotating, otherwise, user might be hauled by the rotating machine, which may result in serious injuries or accidents.

DO NOT manipulate the tool holder before the spindle stops totally. Otherwise, user might be hauled by the rotating machine, which may result in serious injuries or accidents.

DO NOT use tool holder any more if some abnormal conditions, like cracks, breakage or transformation are detected thereon. Otherwise, it may result in serious injuries or accidents for user.

DO NOT make any repairing, re-assembling nor remodeling on the tool holder. Otherwise, it will cause the weak function or abnormal run out of the tool holder.

Please operate tool holder under normal and clean usage.


Text Box:  Please wipe iron filings away before and after operating tool holder. Also it's necessary to do anti-corrosion treatment to ensure the longevity of tool holder.

How to Mount

1.Please choose the collet with proper shank of tool holder and make sure if you have wiped the iron filings and dusts away before using it.

2.Please put ER collet into ER nut.

3.Be sure that the groove of collet and the inner of nut match well. (Please refer to the right drawing)

4.Accordingly, put the tool holder into the locking device and fix its direction to avoid shaking fore and after.

5.To lock ER collet and ER nut into the tool holder.

6.To insert the tool into ER collet, For safety, please insert it into the bottom of ER collet or the depth of 2/3.

7.Please use the attached ER wrench to tighten ER nut, thus the tool can be clamped by the tool holder.

8.Please operate the tool holder on the spindle after tightening the tool. If not, the tool drops off and may result in serious injuries or accidents. (The operation of changing the tool directly on universal machine shall not be limited on this instruction. Please follow above steps 1-7)

Accusize toolsEr colletTool holder​mount er collet