Company Category: Boring Tools/Bars/Heads

Nearly 60 years later, CJWinter is now one of the world’s leading manufacturers of cold-displacement, cylindrical dies and attachments. CJWinter products are found in traditional thread-rolling applications such as those used with multi-spindle screw machines, rotary transfer machines and CNC – lathes. CJWinter products and dies are also found in specialty applications like cold root rolling used by the oil and gas industry and in industries using dedicated rolling, forming and shaping mills. We’ve applied our decades of experience designing tools for rotary shouldered connections to the petroleum industry to become the only self-contained, commercially available tool with ANSI/API Specification 7.2.2008 and ISO 10424-2.2007 compliance, in accordance with NS-1 and DS-1 Third Edition, Volume 3.33.6 standards. CJWinter sells and services its products around the world and has installations on every continent except Antarctica. Renowned for its friendly customer service, expert technical assistance, fast delivery and custom engineered solutions, CJWinter should be your first choice when it comes to your material forming needs. Initially focused on the manufacture of tooling and accessories for the Davenport screw machine, Mr. Brinkman pioneered the development of the pneumatic thread-rolling attachment. At the same time, CJWinter® also began to expand its product offerings to include a complete line of thread-rolling dies both for its own attachment as well as for those from other manufacturers. In response to the industrial need for stronger, more reliable threaded connections, CJ Winter developed a complete line of tooling for cold root rolling to meet customer needs and the specifications they are required to follow. Initially introduced as a method to improve the fatigue life of rotary shouldered connections, cold root rolling has become a critical process in extending the durability of components in high-stress environments, particularly in the petroleum industry. CJ Winter’s leadership in thread rolling technology allowed the company to refine the cold displacement process over decades, making cold root rolling an essential tool for industries that demand long-lasting performance. By burnishing the root radius of threads, cold root rolling not only enhanced fatigue resistance but also delivered up to 27 times better component life compared to untreated connections, making it a globally recognized standard. Today, cold root rolling continues to serve as a cornerstone product line within CJ Winter, providing industries with precision-engineered solutions that meet stringent standards. This dedication to innovation has solidified cold root rolling as an essential process for manufacturers seeking to reduce costs and increase the lifespan of their critical components. | CJWinter® manufactures the premier line of thread rolling attachments, thread rolls, specialty dies and tooling for multi-spindle, Swiss and CNC machines. Today, CJWinter is one of the world’s leading manufacturers of thread roll tooling, cylindrical dies and attachments. We have the fastest delivery times in the industry. 80% of our rolls ship in 24 hours – including custom thread rolls. All products made in house to optimize process. CJWinter manufactures a full line of replacement thread rolls. Whether you need thread rolls for CJWinter, LMT Fette, Reed, Landis, Wagner, Salvo, Detroit Attachments, or Large Diameter Dies. We offer Competitive Pricing and Superb Quality. Or products have the best overall value, proven to last longer. CJWinter utilizes state of the art equipment to produce replacement rolls equal to or better than the OEM rolls. We Don’t Have Customers — We Have Partners