In order to mount your power chuck to your CNC machine spindle,  often a precision ground back plate (adaptor) is required to assemble.

Although we can provide many standard types adaptors  such as (JIS, ISO or ASA-A1, A2, Camlock or Pull-Stud), we can also supply more widely adaptors or specialist adaptors to suit your special requirements.

Either purchase from our variously standard power chuck stock or provide the essential dimensions you require for your machine spindle to us so that we can supply your high precision adaptor accordingly to meet your requirement.

It’s very neccessary to choose the right direct mount power chuck or hydraulic chuck adapter plate when assembling new  or replacing an old power chuck on your machine.

It always some difficult for you to determine what your spindle type is when you don’t know that information in your mind.

we think sometime the easiest way to determine what spindle type is and size is to remove the power chuck and chuck adaptor plate from the spindle nose and measure it carfully,  Saving  time by using the guide below to quickly and accurately measure your power chuck size .

Common Machine Spindle Types

D1 Camlock Spindle DIN 55029, ISO 702/II

Determining D1 Type Spindle and Size

1. Measure the pilot diameter and length (B & C)
2. Measure the bolt circle diameter (F)
3. Measure the diameter of the holes (E)

A1/A2 Short Taper DIN 55026, ISO 702/I

Determining an A Type Spindle and Size

1. Measure the pilot diameter and length (B & C)
2. Measure the bolt circle diameter (F1 and F2) and diameter of the holes (E1 & E2)
3. Check the number of bolt circles (one for A2 mount or two for A1 mount)
4. All chucks with A1 mount can be installed on A1 spindle nose only
5. All chucks with A2 mount can be installed on either a A2 or A1 spindle.

L Type Long Taper Key Drive

L Type Long Taper Key Drive

Determining an L Type Spindle and Size

1. Measure pilot diameter (A)
2. Measure length (C)
3. Measure thread size (dimension B)

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