SELECTING THE CORRECT SPINDLE MOUNT
FOR YOUR SCROLL 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.
LONG TAPER SPINDLES
For the long taper spindle noses (Type L), check the pilot diameter,
length and thread size.
For the threaded spindle noses, check the thread diameter, number of
threads per inch and length, pilot diameter and length, plus overall
Click here for
detailed spindle dimension drawings
SELECTING THE CORRECT TYPE OF SCROLL
Scroll Chuck (Manual Actuated
Self-Centering - available in 2-jaw, 2-3 jaw, 3-jaw, 4-jaw, and
A manual 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. The manual 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 on 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
Combination Jaw Lathe Chucks
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.