CJWinter is the industry leader in thread rolling solutions for multi-spindle, Swiss, CNC, Rotary Transfer applications. When you need durability, flexibility, and reliability, we cover the full spectrum of your thread rolling needs. Our thread rolling solutions include:
CJWinter manufactures a wide range of attachment thread rolls. Our quality and performance is unsurpassed, and standard size thread rolls ship within 24 to 48 hours. We produce rolls to fit not only our own CJWinter attachments, but also all major manufacturers, including Reed, Fette, Salvo, Landis and Detroit.
CJWinter Burnishing Rolls are designed to your print. Burnishing Rolls are made to extremely high standards from the finest materials available.
CJWinter is the world leader in machine dies. CJWinter typically can meet your exacting thread roll specifications a full 2 to 3 weeks faster than our leading competition.
MAThread® is a patented threaded fastener used mainly for the auto industry for improving product assembly. The cutting-edge technology of MAThread eliminates the common issue of cross-threading.
CJWinter Knurls are designed to your print. Knurls are made to extremely high standards from the finest materials available. The care and precision used in their manufacture assures the user of a premium quality tool. The High Speed Steel Knurl, lapped to a smooth hard finish, will give longer life and impart a smooth clean surface to the knurled part.
If you manufacture Sucker Rods, Pony Rods, Sinker Bars or Couplings, in either AISI Grade or API Grade Alloy, CJWinter is the Best Choice for your thread rolling needs. Available in 5/8", 3/4", 7/8", 1" & 1 1/8" body diameters.
API Cold Rolls
Drill pipes undergo repeated, severe tensile stresses during a drilling operation. These cyclic stresses are particularly focused on the thread roots and can cause premature pipe failure. Cold rolling is a method in which the material introduced between rollers is compacted and compressed.
How to Determine Correct Working Face
Figures 1 through 4 are intended to help you calculate the working face (F) for various thread rolling applications, determine the angle of chamfer required and position the thread roll properly.
The working face (or F dimension) of the thread roll must always be greater than the length of thread that needs to be generated on the part. The general rule is to allow the thread roll to overhang each end of the blank by at least 1 1⁄4 threads (root to root or crest to crest = 1 thread).
Figure 1 and 3 F = (2.250 x P) + L
Figure 2 and 4 F = (2.500 x P) + L
A = 1.500 x P
B = 1.250 x P H
Whether you're ordering from our extensive in-stock inventory, or requesting custom-made materials, the thread rolls you get from CJWinter arrive quickly, perform at your exact specs, and last a long, long time.
Don’t see the solution you need? Request a custom tool with us today.