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W12 Series 4-Rollers Rolling Machine

The W12 series 4-roller plate rolling machine is a high-efficiency hydraulic plate bending solution designed for pre-bending and rolling of metal plates into cylindrical, conical, or curved workpieces. Widely used in pressure vessels, boilers, pipelines, and structural steel industries, this machine integrates pre-bending and forming into one operation, eliminating the need for additional equipment.

Structure & Working Principle
The machine adopts a four-roller configuration:
The top roller is the main drive roller, with its vertical movement controlled by a hydraulic motor for stable and powerful operation.
The bottom roller applies clamping force to the plate through a hydraulic cylinder, ensuring firm holding during the forming process.
The two side rollers, positioned symmetrically on both sides of the bottom roller, move along inclined guide rails. They are driven by a mechanical system consisting of nuts, worms, and main screws, providing controlled lateral support and forming force.
This design allows both ends of the plate to be pre-bent in a single setup, reducing material waste and improving efficiency compared to three-roller machines.

Key Features
One-step forming: Pre-bending and rolling can be completed on the same machine, saving setup time
Full hydraulic drive: Smooth operation, high rigidity, and reliable clamping force
recision control: Optional CNC system for automatic control of roller positions, improving repeatability
Wide material compatibility: Suitable for carbon steel, stainless steel, aluminum, and alloy plates
Easy operation: User-friendly control panel with manual and automatic modes

Applications
Pressure vessels and boilers
Pipe manufacturing
Wind tower and structural steel fabrication
Automotive and shipbuilding industries

Inquiry

Product Description

Specifications

Model

Thickness
of coiled plate
(mm)

Max pre-bending
Thickness
(mm)

Width of
coiled plate
(mm)

Plate Yield
Strength
(Mpa)

Diameter of
Upper Roller
(mm)

Main Motor
(KW)

Weight
(KG)

Overall
Dimensions 
LXWXH
(mm)

W12-4X1500

1-4

3

1500

245

140

3

1800

2800X900X1100

W12-4X2000

1-4

3

2000

245

160

4

2600

3400X900X1100

W12-6X2000

1-6

5

2000

245

170

4

3200

3600X1100X1350

W12-6X2500

1-6

5

2500

245

190

5.5

3800

4000X1200X1400

W12-8X1500

1-8

6

1500

245

190

5.5

3100

3500X1100X1350

W12-8X2500

2-8

6

2500

245

220

7.5

3800

4300X1300X1600

W12-12X2000

3-12

10

2000

245

240

7.5

4800

3800X1300X1600

W12-12X2500

3-12

10

2500

245

260

11

5200

4350X1450X1700

W12-16X2000

3-16

12

2000

245

260

11

5800

4100X1500X1800

W12-16X2500

3-16

12

2500

245

280

11

7500

4950X1600X1980

W12-16X3000

3-16

12

3000

245

340

15

9500

5600X1800X2100

W12-20X2000

3-20

16

2000

245

280

11

7800

4350X1600X2000

W12-20X2500

3-20

16

2500

245

340

15

9200

5000X1800X2200

W12-25X2000

4-25

20

2000

245

340

15

9400

4350X2000X2500

W12-25X2500

4-25

20

2500

245

380

22

11000

5000X2200X2600

W12-25X3100

4-25

20

3100

245

420

30

16000

6000X2200X2700

Description and specifications given in this catalogue are subject to modification without notice.

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About
Nantong Pacific CNC Machine Tool Co., Ltd
Nantong Pacific CNC Machine Tool Co., Ltd

Nantong Pacific CNC Machine Tool Co., Ltd is a key enterprise of national machinery industry, located in Haian Economic and Technological Development Zone, where the environment is beautiful and the traffic is convenient, which facilitates the rapid establishment of communication between enterprises and customers. The enterprise is fully equipped, specializing in the production of shearing machine, bending machine, rolling machine, hydraulic press, punching machine and other products, widely used in: light industry, aviation, shipbuilding, metallurgy, instrumentation, electrical appliances, stainless steel products, construction and decoration industry. Our products sell well both at home and abroad.


As a professional China 4 Roller Rolling Bending Machine Manufacturers and W12 Series 4-Rollers Rolling Machine Company, The company now has the ability to design, develop and manufacture standard series products and non-standard equipment. Products sell well throughout the country, a large number of exports to Southeast Asia, Europe, the United States and the Middle East. The company covers an area of more than 20,000 square meters, with a group of engineers and technicians with rich professional knowledge, production and testing equipment is complete. Over the years, has been committed to the research and innovation of forging machine tools, the product sales and after-sales service is sparing no effort, has in Beijing, Tianjin, Shenyang, Shandong, Zhejiang, Guangzhou, Shanghai, Hangzhou, Chengdu, Xi 'an and Jiangsu area established a more perfect set of pre-sale, sale, after-sales service in one of the branches, do our best to meet the needs of domestic and foreign customers.


In today's world full of hope and opportunities, Pacific Machine Tools and our customers go hand in hand for common development.

News
Extension of Industry Knowledge

1. Introduction to 4 Roller Rolling Bending Machine

The 4 Roller Rolling Bending Machine, also known as W12 Series 4-Rollers Rolling Machine, is a high-performance plate rolling equipment widely used for forming cylindrical, arc, and conical shapes from metal sheets. It is essential in industries such as shipbuilding, pressure vessels, wind towers, and heavy steel structure manufacturing.

Compared with traditional 3-roller machines, the 4-roller design improves efficiency by 30%–50% and reduces material waste by up to 20%, making it a preferred solution for precision plate forming.

Nantong Pacific CNC Machine Tool Co., Ltd is a key enterprise of national machinery industry, located in Haian Economic and Technological Development Zone, where the environment is beautiful and the traffic is convenient, which facilitates the rapid establishment of communication between enterprises and customers. The enterprise is fully equipped, specializing in the production of shearing machine, bending machine, rolling machine, hydraulic press, punching machine and other products, widely used in: light industry, aviation, shipbuilding, metallurgy, instrumentation, electrical appliances, stainless steel products, construction and decoration industry. Our products sell well both at home and abroad.

2. Working Principle of W12 4-Roller Machine

(1) Upper Roller Main Drive System

The upper roller serves as the main driving component, powered by hydraulic motors that ensure stable and powerful rotation for continuous rolling operations.

(2) Lower Roller Vertical Movement

The lower roller moves vertically under hydraulic pressure, applying force through hydraulic oil in the cylinder to clamp the plate securely. This ensures uniform pressure distribution.

(3) Side Roller Adjustment System

Side rollers on both sides move along guide rails using screw, worm, and lead screw mechanisms, enabling precise curvature control for different plate thicknesses.

The machine allows pre-bending and rolling of both plate ends on the same equipment, significantly improving productivity and reducing material handling time.

3. Key Advantages of 4 Roller Rolling Machine

  1. High Efficiency: One-time clamping completes rolling and pre-bending.
  2. Precision Forming: Accuracy reaches ±0.5mm for cylindrical structures.
  3. Reduced Labor: Automated hydraulic control reduces manual intervention.
  4. Wide Application: Suitable for plates from 2mm to 80mm thickness.
  5. Stable Performance: Hydraulic synchronization ensures consistent rolling quality.

4. Technical Parameters Overview

Item Specification Performance Benefit
Plate Thickness 2–80mm Wide application range
Rolling Accuracy ±0.5mm High precision forming
Efficiency Improvement 30%–50% Faster production cycle
Technical specifications of W12 series 4-roller plate rolling machine

5. Industrial Applications

The 4 roller rolling bending machine is widely used in:

  • Pressure vessel manufacturing
  • Wind tower production
  • Shipbuilding industry
  • Steel structure fabrication

6. FAQs

Q1: What is the main advantage of 4-roller structure?

It allows pre-bending and rolling in one machine, improving efficiency and reducing material waste.

Q2: What thickness range can it handle?

It can handle steel plates from 2mm up to 80mm depending on model capacity.

Q3: Is CNC control available?

Yes, CNC systems are optional and significantly improve precision and automation level.