SELECTING THE CORRECT TYPE OF LATHE CHUCK

Scroll Type Lathe Chuck (Manual Actuated Self-Centering - available in 2-jaw, 2-3 jaw, 3-jaw, 4-jaw, and 6-jaw models)
A scroll type lathe chuck is actuated by using a t-handle wrench inserted into the access holes on the outside diameter of the chuck.  When the t-handle wrench is inserted is inserted into the actuating hole and turned clockwise it turns an internal scroll.  The actuation of the scroll in turn causes the jaws to move simultaneously and exactly the same amount of movement toward center.  If the t-wrench is turned counter clockwise the jaws move outward towar the outside of the chuck.  Scroll chuck may be equipped with solid one piece jaws or 2 piece jaws with a removable top jaw.

Independent Jaw Chucks (Manual Actuated Not Self-Centering - available with 4-jaws)
An independent jaw chuck is designed with 4 jaws which may be moved independently of another.  A t-handle wrench is used to actuate a screw on each jaw independently.  When the t-wrench in inserted into the end of a jaw screw and turned clockwise the jaw moves  to the center of the chuck.  These chucks may be used to center an irregular shaped work part or to position a work part off center by choice.   Independent chuck are available with solid one piece jaws or 2 piece jaws with a removable top jaw.

Combination Jaw Lathe Chucks (Manually actuated)
A combination chuck combines the scroll self-centering action of a scroll chuck with the independent jaw movement of an independent jaw chuck.  This chuck may be used as a scroll chuck and move all the jaws simultaneously or one jaw at a time.  Combination chucks are available with 2 piece jaws with a removable top jaw.
 

Drawtube Actuated Lathe Chuck
Drawtube actuated chucks are power actuated by using hydraulic or air cylinder to move a drawtube in the center of the lathe forward or backward.  The movement of the drawtube clamps or unclamps the jaws.  These chuck are self-centering.  Drawtube actuated lathe chucks are available with 2 piece jaws with a removable top jaw.

Front Mounted Self-Contained Lathe Chuck
These chucks are mounted on the front or the lathe spindle.  The chuck is designed with a an integrated self-contained air or hydraulic air cylinder used clamp or unclamp the jaws in a self-centering action.  Front mounted self-contained lathe chucks are available with 2 piece jaws with a removable top jaw.

SELECTING THE CORRECT SPINDLE MOUNT  FOR YOUR LATHE CHUCK  APPLICATION
SHORT TAPER SPINDLES
For the short taper lathe chuck spindle noses Type A, D and C (DIN) measure the pilot diameter and length, bolt circle diameter and diameter of the holes.
In the case of an A type mount check the number of bolt circles (one for A2 and two for A1).  All chucks with a1 mount can be installed on a-1 spindle nose only.
all chucks with A2 mount can be installed on A1 or A2 spindle noses.
Click here for detailed spindle dimension drawings
 

LONG TAPER SPINDLES
For the long taper spindle noses (Type L), check the pilot diameter, length and thread size.

THREADED SPINDLES
For the threaded spindle noses, check the thread diameter, number of threads per inch and length, pilot diameter and length, plus overall length.