W12 4-Rolls Sheet Metal Plate B

Experience Easy-to-use Bending Capabilities

Our cutting-edge 4-roller sheet metal bending machines consume less energy and are simple to operate. When bending steel plates, make sure everything is simple and worry-free. Your production infrastructure can benefit from LANGYE's linear guide machines in a number of ways, including decreased capital expenditures, improved edge bending precision, long-lasting and efficient performance, and lower continuing operating and maintenance expenses.

Advantages of the Four-roller Besign

Roller motion in the four-roller design

Four rollers and linear guides for the side rollers are features of these sheet bending machines.
To construct the shell, the side rollers move along linear guides, the lower roller travels vertically, and the upper roller remains fixed.
Planetary gears with hydraulic motors drive the upper and lower rollers.
To prevent drive slippage, thin sheets need rollers that are closely spaced.
In this kind of action, the bottom roller's position exactly beneath the top roller guarantees excellent grip.
Four-roller machines are a desirable investment for large-scale pipe and shell manufacturing because of the high productivity of low-thickness shells. 

Other non-circular shapes, like oval shells and tankers, can be created in addition to cones.
CNC operation is also supported by this roller setup.
For the same thickness capacity and span, the investment can be 20–30% greater than for similar 3-roller machines.
The 4-roller sheet metal bending machines from LANGYE provide outstanding versatility and performance. They are perfect for medium to heavy rolling because they are also quite accurate and robust. 

Advantages of LANGYE Plate Rolling Machine

Large-scale infrastructure
The 16,000 square meter production plant is ideally situated to provide us with quick access to raw materials, transportation, skilled labor, power, and other infrastructure in Nanjing, China's engineering center. Over 40 Years of Excellence
Ongoing product development is the foundation of our superior manufacturing. We have led the industry in design, manufacturing quality, performance, and value for money for more than 40 years. Every one of our designs is created internally, and we provide complete assistance. More than 2500 Machines in Use
In China and abroad, we have produced and put into service more than 2500 equipment. We continue to support the first machine we sold, which is still in use today. More than 400 Recurring Clients

More than 400 of our clients are happy and devoted. They adore our on-demand service and our extensive spare part inventory for every machine we produce, in addition to the exceptional performance of our equipment. You can feel secure in the knowledge that you will receive excellent treatment.

Technical Paraments

* All dimensions are in millimeters.

* All capacities are 260 MPA.

Depending on your application and feed requirements, we offer both fixed and variable speed machines.

Build Quality and Benefits

1. Durable Steel Structure
Heavy-duty sheet metal is used to create the sturdy steel construction of LANGYE's sheet metal bending machines. A sturdy box-shaped chassis with interlocking and reinforcing ribs connects these frames. To enable parallelism of all axes and precision surfaces, as well as lifespan and essential precision qualities for the machine, roller guides are manufactured with a single fixed reference point.

2. Rollers for Sheet Metal Bending Machines
The most crucial part of our sheet metal bending machines are the rollers. LANGYE employs high-precision CNC lathes to machine forged carbon steel rollers with the right diameter. Our rollers are efficiently connected to the planetary gear system by means of a special spline design. Compared to welded connections provided by other manufacturers, this design lowers the number of roller failure spots.

Arch of Sheet Metal Bending Machine

In order to compensate for roll deflection during bending, our rolls are crowned. It is possible to purchase custom crowned rolls in a variety of materials and thicknesses.

Hydraulic Gear System for Sheet Metal Bending Machines

When the coiled workpiece is less than the maximum thickness, our 4-roll sheet metal bending machines may function at less than full capacity thanks to a hydraulic mechanism, which guarantees further energy savings.


Our machines use the incredibly efficient LANGYE Planetary Drive SystemTM, which reduces speed by increasing the number of gear and pinion stages while removing the energy loss that comes with hefty transmission systems.

Operational Benefits

Pre-bending, or pre-clamping
Depending on the operator's preference and level of skill, edge bending can be done either before or after shell rolling. It is possible to roll and edge bend thin plates simultaneously.

Easy Cone Bending

With the W12 series, cone bending is an easy process. To obtain the cone bending geometry, the bottom roller must be inclined. On certain models, an electronic microprocessor is in charge of controlling and monitoring this.


Additionally, our control system makes sure that after bending, the cone returns to a parallel configuration with ease and accuracy, enabling accuracy in repeatable tasks.

Additional Features of Sheet Metal Bending Machines

The following extra features and accessories are available at customer request in addition to our superior design and production excellence.

1. Rollers that are case-hardened
Additional resilience and endurance are offered by induction-hardened rolls, which have a surface hardness ranging from 42 to 55 HRC.

2. Full Fabrication Package for Windmill Towers
consists of hardened rolls, an inclined conveyor, center and side shell supports, and PLC/CNC capabilities.

3. Supports for the Center and Side Shells
Center and Side Shell Supports improve worker safety while streamlining operations, lowering operating expenses, and boosting productivity. 

4. Hard Rollers Plated in Chrome
The dairy and pharmaceutical industries employ hard chrome-plated rollers for specific purposes.

5. Tables with tilts
The sheets that are fed in at a particular angle are supported by tilt tables. Useful for longer sheets in particular.

6. Belt Conveyors
The machine's performance and lifespan are increased when the sheets are longer because the powered conveyor belts make feeding the sheets simple.

7. Controls for PLCs
PLC controllers offer accuracy and convenience of use while recognizing when preventive maintenance is necessary to prolong machine life and maximize output.