Manual Leveling Machine (120mm Roll Diameter)

Product Introduction

In the modern metalworking industry, the flatness of sheet metal is a key factor determining the quality of subsequent processing. To meet the leveling needs of thick plates, high-strength steel, and various non-ferrous metal sheets, we are proud to introduce this 120-roll manual precision leveling machine. Designed specifically for processing metal sheets ranging from 4.0 to 25.0 mm in thickness—and even thicker—this machine features a robust frame, a precision roller arrangement, and a flexible manual adjustment mechanism, making it an indispensable tool in the medium-to-heavy plate processing sector. Whether for pre-processing before laser cutting or stress relief after stamping, this machine delivers exceptional leveling results at an outstanding value, ensuring the sheets meet perfect flatness standards.

Technical Specifications

Manual Adjustment and Operational Convenience

• Compared to fully automatic CNC models, this manual leveling machine maintains high precision while significantly simplifying the operating process and reducing equipment costs. The upper roller assembly’s vertical adjustment utilizes a high-precision worm gear lift mechanism, which, in conjunction with a top-mounted compression spring, effectively eliminates mechanical transmission backlash. Operators can precisely control the vertical movement of the upper rollers by turning a handwheel, thereby adjusting the roller gap.

• This manual adjustment method is intuitive and reliable, making it particularly suitable for production involving multiple product varieties and small batches. Operators can quickly set the roll pressure based on their experience, taking into account the sheet thickness, material (such as stainless steel, aluminum, or carbon steel), and flatness requirements. The equipment is equipped with a Delta variable frequency drive to control operating speed. Although adjustment is manual, speed control remains precise and smooth, allowing the feed speed to be freely adjusted according to actual processing conditions. Additionally, prominent emergency stop switches are located at the four corners of the machine body, and the electrical control system is centralized in a single control cabinet on one side, ensuring operational safety while embodying a user-friendly design philosophy.

Flexible Inlet and Outlet Configurations: Powered and Non-powered Roller Conveyor Systems

To accommodate varying levels of automation and budget requirements across different workshops, this 120-mm-diameter manual leveling machine offers highly flexible configuration options for its inlet and outlet auxiliary conveying systems. Users can select either powered or non-powered roller conveyor systems based on actual production rhythms and material handling methods.

Non-powered roller conveyor configuration

• For production scenarios with limited budgets or those primarily relying on overhead cranes or manual loading, non-powered roller supports are the ideal choice. This configuration is typically fabricated from thick-walled steel tubes, with finely polished surfaces and smooth-rotating bearings.

• Functional Role: Primarily serves to support, guide, and reduce friction. At the feed end, it assists operators in smoothly pushing heavy steel plates into the leveling roll opening, significantly reducing labor intensity; at the discharge end, it supports the leveled plates, preventing secondary deformation caused by sagging under their own weight.

• Suitable Scenarios: Ideal for single-piece custom orders, repair shops, or applications involving shorter plate lengths. This configuration features a simple structure and requires virtually no maintenance, making it the standard choice for economical production lines.

Powered Roller Conveyor Configuration

For factories seeking high efficiency and continuous operation, we strongly recommend a conveyor line equipped with powered inlet and outlet rollers. This system connects to the main machine via a chain or coupling, or is equipped with an independent drive motor, ensuring speed synchronization with the leveling machine.

• Functional Purpose: Enables automatic sheet feeding and “engagement.” The powered rollers actively feed the sheets into the leveling machine and quickly transport them to the unloading table after leveling.

• Technical Advantages: This configuration completely eliminates the need for manual labor, removing the risk of surface scratches or safety hazards associated with manually pushing or pulling sheet metal. Especially when handling extra-long or heavy sheets, the powered conveyor ensures balanced tension during transport, preventing sheet pile-ups or stretching caused by speed discrepancies. This significantly boosts production efficiency, making it a cost-effective upgrade path toward automated production.

Wide Applications and Value

This 120-roll manual leveling machine is widely used in industries such as steel structures, automotive manufacturing, construction machinery, shipbuilding, and pressure vessels. It can handle not only standard Q235 carbon steel plates but also perform precision leveling of high-strength steel plates, stainless steel plates, and aluminum plates.

Choosing this equipment means you gain industrial-grade leveling capabilities at a reasonable cost. After leveling, internal stresses in the sheet metal are completely released, eliminating deformation during subsequent welding, improving laser cutting precision, and significantly increasing the yield rate in stamping operations. When paired with optional powered infeed and outfeed conveyors, it becomes more than just a standalone machine—it is a key piece of equipment for enhancing product quality and optimizing your production process.