N.A. Woodworth Gear Chucks (Quick Change)0 pages

2002 Stephenson Hwy., Troy, MI 48083
Phone: 800-544-3823 Fax: 248-743-4401
www.itwworkholding.com
“Quick-Pitch” Diaphragm
The new Quick-Pitch Diaphragm by N.A. Woodworth
is designed specifically to provide quick and accurate
part changeovers in a simple and economical manner.
Aimed primarily at gear families, the chuck also
has applications in hard turning and grinding operations
where repeatability, inter-changeability and
roundness are a concern.
The key to the design is the simplicity of the quickchange
system. A fixed length pin locates against
the master jaw of the diaphragm and extends the
distance to the pitch diameter. The pin is housed in a
jaw that orients the unit and contains the “Quick-
Change” feature of a snap in place housing and retained
screw system. Replacement of worn pin sets
is as simple as sliding out the old and inserting the
new, no adjustment is necessary.
Four models are available spanning pitch diameters
from 25 mm to 350 mm with three and six jaw systems.
FEATURES:
• Jaw change in 60 seconds
• Accommodates any number of gear teeth
• Compliance for tooth space variation
• Optional synchronizing pins for auto-load
• Standard “pull-back” action
• Centrifugal force compensation for higher
speeds
• Minimal maintenance, no sliding parts
• Light weight assembly
IDEAL FOR:
• Gear families including; Sun, Ring, Pinion and
Output Gears
• Spur and Helical Gears
• Hard Turning
• Grinding Applications: Face and Boring
Half-turn Lock
Retained Screws
Fixed Length Wedge Pin
Requires No Adjustment
Chuck Sizing for Part Ranges:
Model
Name
No. of
Jaws Chuck Diameter
Major Diameter
Range
Min./Max.
PLD - 180 3 178mm 25mm - 100mm
PLD - 250 3 250mm 100mm - 170mm
PLD - 345 3 345mm 170mm - 245mm
PLD - 450 6 450mm 245mm - 350mm
Nitrided Pins for Long Life
Wedge Pins Locate on
Pitch Diameter
N.A. Woodworth Original Radius Diaphragm
an ISO9001:2000 Registered Company
Sealed Design