Stripping Spring Assemblies

These Stripping Spring Assemblies, also known as Coil Springs, are designed for medium pressure applications such as blanking, piercing and forming dies along with many other uses. Simply drill and tap 3/8″ – 24 location holes for each assembly. (1/4″ – 20 tap for catalog A-I 50).

The coil spring assembly can be used with or without a stripper plate if the design is suitable. A 3/8″ – 24 x 3/4″ large flat head screw w/ lock washer is furnished for retaining a 1/4″ thick Stripper Plate (1/4″ – 20 X 112″ screw for CAT. A-150 ONLY).

Coil Spring Assembly
Coil Spring Assembly

Bolt & Plate Bolt Hex Load Defl. Initial Max
Part# Length O.D. Thread Length Screw Size Wrench Size Travel lbs. per 1/8" Load Lbs. Load Lbs.
A‑150 1-1/2" 1" 0.25 1/4-20 5/32 5/16 41 125 230
A-200 2" 1‑5/16" 0.5 3/8-24 3/16 7/16 85 250 545
A-250 2-1/2" 1-5/16" 0.5 3/8-24 3/16 9/16 75 230 570
A-300 3" 1-5/16" 0.5 3/8-24 3/16 13/16 60 200 590
A-400 4" 1-5/16" 0.5 3/8-24 3/16 1‑1/16 40 170 510

If a stripper plate is used, caution must be used to make sure the screw does not enter the travel area as shown in drawing provided. Cap screws may be used for holding the stripper plate, however, this would require a much thicker plate to accommodate the thicker head on the screw. Some users save additional time and money by only attaching a portion of the assemblies to the stripper plate, provided the design is suitable.

Replacement Medium Pressure Coil Springs

Catalog No. Description
A-151 Spring for A-150
A-201 Spring for A-200
A-251 Spring for A-250
A-301 Spring for A-300
A-401 Spring for A-400

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