Turret Lathes - Hardinge Inc.

Pads
© Hardinge Inc., 2003 All specifications are subject to change without notice.
Overview
Master Collets, Master Feed Fingers and Pads from Hardinge ®
Hardinge has manufactured collets for over 110 years. Using those years of expertise, Hardinge designs master collets
and master feed fingers that perform better than other products in the marketplace.
The Style "S" Master Collet overcomes all the problems associated with master collets. When loading
bars, the rugged shoulder of the pad locates against the front of the groove in the master collet. There are no set screws
or clamps to be damaged or loosened. When a part is machined, the working forces are against the rear shoulder of
the pad which is located against the rear shoulder of the groove in the master collet. Again, there are no screws or clamps
to wear or break. The clamp which holds the pads captivated in the collet literally floats longitudinally, assuring that there
is never any pressure on the clamp. There are no holes in the OD of the master collet, or on the ID of the pads, resulting
in maximum bearing on the workpiece and the spindle collet seat. When Style "S" collets are used, there will never be
high spots on the spindle collet seat caused by the master collet and pad design. When selecting master collets from
this catalog, remember the Style "S" design has been in existence for over 50 years and is the preferred system.
The Style "B" Master Feed Finger and Pads are uniquely designed and proven by over fifty years
of use in the machine tool industry. The straight-forward design allows for full bearing of the pad ID on the workpiece.
There are no screws or tabs to wear or to remove bearing area from the pads ID. The master feed fingers are spring
tempered to the proper gripping tension for maximum longevity. Custom master feed fingers can be easily and quickly
manufactured at Hardinge to give extremely light grip, or heavier grip for nonstandard applications. The use of Style
"B" Master Feed Fingers will assure you of minimum downtime on your production floor.
The "AF" Master Feed Finger and Pads are designed to give you extreme flexibility with a very
small investment. Each set of pads has a range of 1 ⁄32" adjustment down, reducing the inventory of pads required. Each
click on the adjusting collar adds or subtracts between 6 to 8 pounds of pressure on the bar stock. This master outshines
all others when feeding thin wall tubing. If the stock you run is very abrasive, these pads can be adjusted to maintain
the force required to feed your stock when competitive pads would have to be replaced. This master feed finger may
not have the full range of your collet, but within its range it will prove to be a real boost to your productivity and it will reduce
your overall operating cost.
Why purchase master collets and feed fingers rather than solids? While the initial
investment will be slightly more, the advantage of achieving more versatility at a lower net cost assures the user of a
profitable return. Master collets and feed fingers are capable of holding and feeding bar stock in a variety of sizes and
shapes by using interchangeable pads. Thus, the same workholding tool can be used for more than one job to reduce
tooling cost, provide greater flexibility in operation, and save on storage space.
Pads for master collets and feed fingers are available from stock in round, hexagon, and square shapes. Extruded and
unique shapes can be custom-made through our Special Collet Department. Pads are available in a variety of materials,
including hardened steel, cast iron, bronze, and nylon to meet specific workholding and work-feeding needs.
Chapter 3
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