High-Precision Thread Rolling Equipment
The Two-Roller Thread Rolling Machine is a high-efficiency metal forming machine designed for external
thread rolling, bolt thread forming, screw thread processing, stud
manufacturing, shaft threading, and precision fastener production.
Using two rolling dies to press and form threads on the workpiece
surface, this machine provides stable thread accuracy, smooth
surface quality, high production efficiency, and reliable forming
performance.
Unlike traditional thread cutting, thread rolling is a chipless
cold forming process. The material is plastically deformed by the
rolling dies to create strong and uniform thread profiles. This
helps improve thread strength, surface hardness, fatigue
resistance, and material utilization while reducing cutting waste.
The two-roller structure supports stable clamping and forming force
during operation, making it suitable for processing bolts, screws,
studs, threaded rods, shafts, pins, pipe fittings, and other
cylindrical metal parts. Depending on roller die design and machine
configuration, it can also support straight threads, fine threads,
knurling, and special thread profiles.
The machine is suitable for carbon steel, alloy steel, stainless
steel, copper, aluminum, and other ductile metal materials
according to workpiece hardness, roller die specification,
lubrication, and forming parameters. It is widely used in fastener
factories, hardware production, automotive parts manufacturing,
machinery components, construction parts, and industrial
metalworking.
For manufacturers looking for efficient and reliable thread forming
equipment, the Two-Roller Thread Rolling Machine provides high productivity, stable thread quality, strong forming
capability, flexible application, and long-term industrial value.
| Specification | TB-S30CNC | TB-S50CNC | TB-S70CNC |
| Outer Diameter Range (mm) | φ2-φ30 | φ12-φ60 | φ15-φ80 |
| Pitch Range(mm) | 0.5-4.0 | 0.5-6.0 | 1.0-8.0 |
| Rolling Method |
(Infeed&Through Fee Rolling) |
(Infeed&Through Feed Rolling) |
(Infeed&Through Feed Rolling) |
| Roller Outer Diameter(mm) | 140-195 | 155-235 | 200-275 |
| Roller Inner Hole(mm) | φ54 | φ75 | φ100 |
| Roller Maximum Thickness(mm) | 120 | 160 | 240 |
Feed |
5KW*2
( Servo Motor) |
7.75KW*2
(Servo Motor) |
11KW*2
(Servo Motor) |
| Reducer | Reducer | Reducer |
| planetary roller screw | planetary roller screw | planetary roller screw |
Transmission Method | 3KW*2
(Servo Motor) | 11KW*2
(Servo Motor) | 22KW*2
(Servo Motor) |
Reducer |
Gearbox |
Gearbox |
| / | Transmission Shaft | Transmission Shaft |
| Control System | CNC | CNC | CNC |
| Max Rolling Pressure (Tons) | 40T | 50T | 80T |
| Machine Weight(KG) | 5500 | 8000 | 16525 |
| Machine Dimensions(mm) | 2820*2630*2240 | 3650*2975*1740 | 4320*3890*1908 |
TB-S30CNC
Two-slide CNC Thread Rolling Machine Design Principle
To process higher-quality workpieces, its feed method is upgraded
from single-slide to two-slide, placing the workpiece between two
rollers. During operation, left and right slide rollers move toward
and roll the workpiece simultaneously, ensuring uniform rolling
pressure on both sides and avoiding precision loss from workpiece
deflection in one-way feed. It also enables better
clamping/positioning for axial feed, facilitating automated
loading/unloading to enhance workpiece stability and precision.
This CNC thread rolling machine is a leader in thread rolling
machine industry of China.
Machine Features:
- Specifically designed for high-precision workpieces, especially
shaft parts processing, such as ball screws, worm gears, and gear
rolling densification.
- The feed and transmission power sources are driven by servo motors,
facilitating adjustment and data collection.
- The feed part uses a servo motor to drive the RV reducer and
planetary roller screw, increasing the machine's torque and
durability. Typically, other machines use ball screws, but our
planetary roller screw output is 5-10 times that of ball screws.And
the accuracy of the workpiece is ensured through the detection of
the grating ruler.
- Transmission part:
A) The S30CNC uses a servo motor directly connected to a
high-quality planetary reducer to drive the roller shaft, ensuring
the roller shaft's operating precision and operability.
B) The S50CNC & S70CNC have increased transmission torque compared
to the S30CNC, Two servo motors are used to brake the two roller
shafts in the gearbox, which are connected by a cage drive shaft.
This improves the traditional transmission shaft's uneven speed
characteristics and ensures smoother operation. - The human-machine interface makes operation easier and more
user-friendly.
- Since the workpiece is located on the middle feeding component,
connecting to automation is more convenient, fast, and simple.
FAQ
1. What is a Two-Roller Thread Rolling Machine used for?
It is mainly used for external thread forming on bolts, screws,
studs, threaded rods, shafts, pins, pipe fittings, and other
cylindrical metal parts.
2. What is the advantage of thread rolling compared with thread
cutting?
Thread rolling is a chipless cold forming process. It can improve
thread strength, surface quality, fatigue resistance, and material
utilization while reducing cutting waste.
3. What materials can this machine process?
It can process carbon steel, alloy steel, stainless steel, copper,
aluminum, and other ductile metals depending on workpiece hardness,
roller die design, lubrication, and forming parameters.
4. Can the machine process different thread sizes?
Yes. Different thread sizes and profiles can be processed by
changing roller dies and adjusting machine settings according to
workpiece requirements.
5. Is this machine suitable for mass production?
Yes. Thread rolling machines are suitable for high-efficiency batch
production, especially for fastener factories and hardware
manufacturers.
6. Can roller dies be customized?
Yes. Roller dies can be customized according to thread size, pitch,
workpiece diameter, material, thread profile, and production
requirements.
7. What information is needed for quotation?
Please provide workpiece material, diameter, thread size, thread
length, production quantity, required accuracy, sample or drawing,
and special processing requirements.
