How Does Kunshan Hong Yongsheng Produce Precision Stud Bolts on Swiss-Type CNC Lathes?

A stud bolt is a small, slender part that does a big job. It holds components in position, takes load along its length, and has to fit into a mating hole or nut without play. When a customer orders thousands of them, the challenge is not making one good part. It is making every part the same, shift after shift. That is the work of the Swiss-type CNC lathes at Kunshan Hong Yongsheng Precision Hardware Products Co., Ltd., and a short walk through the workshop shows how the process is organized.

Why Swiss-Type CNC Lathes Suit Slender Stud Bolts

A Swiss-type lathe, also known as a sliding head or walking-head lathe, passes the bar stock through a guide bushing so that the material is held right next to the cutting tool. For long, thin parts such as stud bolts, this is a decisive advantage, because the bar cannot flex away from the tool while it is being cut.

• Close support reduces vibration and keeps slender parts straight
• Turning, grooving, threading, and cutoff can be completed in one continuous cycle
• Bar feeding allows long production runs with little operator intervention
• Consistent diameters from the first part to the last in a batch

A Workshop Organized Around Rows of Machines

The video begins with a walk along the production floor. Swiss-type CNC lathes stand in a row, each in its own enclosure, with exhaust ducting overhead and a small rack beside every machine. The racks hold yellow, blue, and red trays, which keep finished parts, tools, and gauges close to the operator without cluttering the floor.

This layout supports control of the process. Because each machine has its own station, operators can monitor one machine at a time, check parts at the source, and keep batches separate, which makes traceability easier when a customer needs lot records.

Parts Leave the Machine Without Damage

One of the clearest scenes in the video is at the machine's exit. Finished studs fall onto a blue conveyor belt, travel past a steel guard, and drop into a yellow perforated basket, while a stream of coolant runs alongside them. The perforated basket lets the coolant drain away, so the parts do not sit in liquid.

Handling is more important than it looks for small precision parts. If slender studs fall into a hard container or strike one another, threads can be nicked and surfaces scratched. A belt and a soft landing keep parts separated and protect the finish from the moment they are cut.

The Finished Stud Bolts

The final shot of the video is a handful of finished stud bolts held in an open palm, in a dark metallic finish, uniform in length and slender in profile. Seeing them together shows the point of the process: the parts are the same size, with clean ends and no visible burrs, which is what an assembly line needs when it feeds parts by the thousand.

Equipment and Quality System Behind the Process

The stud bolts in the video are made in a 10,000-square-meter workshop that was built with an investment of more than 30 million yuan. Kunshan Hong Yongsheng employs more than 50 people, over 70% of them with more than ten years of production experience, and runs CNC lathes imported from Japan alongside domestic machines, high-precision Taiwanese CAM walking-blade automatic lathes, more than 60 sets of auxiliary equipment, and over 100 testing instruments.

The plant operates under a quality management system certified to ISO9001:2015 and IATF16949:2016, so stud bolts are produced and documented to the same standard as the company's automotive-grade fastener lines.

Why Global Buyers Choose Kunshan Hong Yongsheng

Kunshan Hong Yongsheng has been manufacturing precision hardware since 2006 and serves customers in electronics, automation, communication equipment, medical instruments, and automotive manufacturing, including well-known international brands. With an annual capacity of more than 40 million products and a location about 56 kilometers from Shanghai port and 66 kilometers from Taicang port, the company delivers standard and custom parts to overseas customers efficiently.

Buyers who need stud bolts or other small precision parts made to drawing are welcome to send their specifications, including material, dimensions, and surface requirements, and to request samples before committing to a production order.