Leaf Spring Ear Rolling Equipment Manufacturers
Home / Products / Equipment / Automobile Leaf Spring Complete Equipment / Standalone equipment / Leaf Spring Ear Curling Machine
Leaf Spring Ear Curling Machine
  • Leaf Spring Ear Curling Machine
  • Leaf Spring Ear Curling Machine

Leaf Spring Ear Curling Machine

This ear curling machine is essential for the automotive leaf spring industry, capable of efficiently processing flat curling/wrapping, center curling/wrapping, and bracket ear production.
The machine offers exceptional processing versatility, handling plate thicknesses up to 25mm and widths up to 120mm, while maintaining a tight inner diameter tolerance of 0.3mm across a range of Φ25—Φ130mm.
Utilizing a one-time downward curling formation process, the equipment achieves a production rate of 3–5 heads per minute and is engineered for continuous 24/7 operation across three daily shifts with a total power rating of 30KW.
Equipped with a Siemens PLC and a touch-screen interface, the system supports automated parameter input and comprehensive data collection, integrating premium components such as AirTAC pneumatics and Huade hydraulic valves for superior operational stability.


Equipment technical parameters

1. Steel plate thickness  ≤ 25mm
2. Maximum board width  120 mm
3. Inner diameter of rolled ear Φ 25 — Φ 130 mm
4. Ear inner diameter mm Φ 50 — Φ 160 
5. Ear inner diameter/ear plate thickness > 1.2 5
6. The distance between the centers of the two ears is  850-2000 mm (central positioning).
300 — 2200 mm (end positioning)
7. The tolerance for the center distance between the two ears is ±1.5 mm .
8. The inner diameter tolerance of the rolled ear is 0.3 mm .
9. Processed varieties include  flat rolled ear, flat wrapped ear, center rolled ear, and center wrapped ear.
10. The ear-rolling method involves rolling the ear in one go.
11. Production efficiency 3-5 heads/minute
12. The required heating temperature for leaf springs is 975±25℃.
13. Arrangement left-cut, right-roll
14. Total power 30KW


Equipment Uses
This machine is used to produce flat rolled ears, flat wrapped ears, center rolled ears, and center wrapped ears at the ends of automotive leaf springs. The equipment is highly rigid and capable, and can be used for bracket rolled ear production with high efficiency.


Equipment composition: one set
One set of ear-rolling main unit, one set of head-cutting main unit, hydraulic system and electrical control system, etc.


Other technical requirements for equipment
The control cabinet is equipped with an exhaust fan and an electricity meter with a data output communication port for convenient data acquisition and management. It is designed with information modules for production operation, fault alarm feedback, maintenance and other functions.
The equipment allows users to input product parameters via a touchscreen, and the control system automatically sets the equipment's operation.
The equipment is capable of continuous operation, allowing for three shifts of production per day;
The PLC uses Siemens products;
The main electrical control components are Chint products;
The pneumatic components are from airTAC.
The main hydraulic valves are products of Beijing Huade Technology.
Equipment color: Paint according to the equipment color swatch provided by the customer or use RAL6011 (fruit green).


Equipment environmental requirements
Compressed air source: pressure ≥ 0.5 MPa;
Power supply: Three-phase four-wire: AC380V, 50Hz;
Factory ambient temperature: 10～50℃. It also has good ventilation and a relative humidity of 40-75%.
The cooling water temperature of the hydraulic system shall not exceed 35℃.


Equipment technical data

1. Plan view, foundation map                                   1 copy
2. Electrical schematic diagram, wiring diagram, hydraulic schematic diagram         1 copy
3. Operating instructions (must include lubrication diagram, maintenance guidelines, and layout diagram)         1 copy
4. Consumable parts diagram (consumable parts list)            1 copy
5. List of purchased parts and instruction manuals for major purchased components                   1 copy



Contact Us
PREV: Automobile Leaf Spring End Induction Heating Equipment NEXT:Leaf Spring Ear Wrapping Machine
Related Products
About Us
Wuxi Weineng Automation Technology Co., Ltd.
Wuxi Weineng Automation Technology Co., Ltd. located in Wuxi, the Pearl of Taihu Lake, covers an area of ​​6,000 square meters and currently employs over 60 people. In 2016, the company's founding team began researching and developing complete sets of equipment for automotive leaf springs, hot-coiled springs, and stabilizer bars. Leaf Spring Ear Rolling Equipment Manufacturers in China. To date, they have been deeply involved in this industry for 10 years and are recognized as a specialized, innovative, and distinctive enterprise in this field by the Ministry of Industry and Information Technology.
The company integrates R&D, production, sales, and service. Its main products include complete sets of automotive leaf spring equipment and stabilizer bar equipment, including stabilizer bar end induction heating equipment, stabilizer bar thermoforming induction heating equipment, hollow stabilizer bar double-end induction heating equipment, hollow bar resistance conduction heating production lines, stabilizer bar secondary vulcanization production lines, and hot-coiled spring equipment. The company also provides users with complete induction heating automated production lines. Leaf Spring Ear Curling Machine Suppliers in China.
Over the years, the company has served leading domestic enterprises such as Shanghai China Spring Manufacturing Co., Ltd., Huawei Technology Co., Ltd., Zhejiang Meili Technology Co., Ltd., Zhejiang Jinsheng Auto Parts Co., Ltd., Chengdu ThyssenKrupp Fawer Spring Co., Ltd., Pinghu ThyssenKrupp (Pinghu) Automotive Stabilizer Bar Co., Ltd., and Liaoyang ThyssenKrupp Fawer Spring Co., Ltd., earning high praise for its products and services. Furthermore, the company has exported its equipment to countries such as Turkey, South Korea, India, Brazil, Egypt, Dubai, Iran, Africa, Tunisia and Morocco. "Professionalism, precision, innovation, and integrity" are the development concepts that the company has always adhered to. While continuously strengthening its own scientific research capabilities, it has formed stable industry-university-research cooperation with many universities. It has been repeatedly rated as a high-tech enterprise and a specialized and innovative enterprise. In the future, the company will continue to deepen its research and development in the automotive leaf spring, automotive guide arm, automotive stabilizer bar and spring industry equipment, provide the spring industry with more professional, intelligent and sophisticated equipment products, and contribute to the high-quality development of the global automotive leaf spring, automotive stabilizer bar and hot-coil spring industries.

News

  • Industry News Aug. 03. 2026

    Drill Rod Upsetting | Process, Benefits & Equipment Guide

    What Is Drill Rod Upsetting? Every drill string failure analysis points to the same critical location: the tool joint connection. When a friction-welded drill rod separates, the failure almost always originates within the weld zone itself. Drill rod upsetting eliminates this weakness entirely by fo
  • Industry News Jul. 27. 2026

    What New Demands Do EVs Place on Suspension Spring Manufacturing?

    Heavier Battery Packs Are Changing the Load Equation A mid-size EV battery pack can weigh anywhere from roughly 350 to 700 kilograms, sitting low in the chassis and adding static load that a comparable combustion vehicle simply doesn't carry. That extra mass doesn't distribute itself evenly across
  • Industry News Jul. 23. 2026

    Smart & Digital: The Future Direction of Automotive Spring Equipment

    From Mechanical Automation to Data-Driven Production Ten years ago, a technician judging whether a leaf spring furnace was running correctly relied on a temperature gauge and years of experience. Today, that same judgment increasingly comes from a data stream — furnace temperature curves, quenchi
X Facebook
Product News