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The YouYi Automation Products Center
All of YouYi's press automation solutions in one place.
Straightener/Leveling Machine
The SNL Series Precision Straightener is engineered for thin coil materials ranging from 0.1mm to 0.6mm in thickness. Available in both single-stage and two-stage configurations, it offers flexible solutions for different leveling requirements.
Material width (mm): 100-300
Material thickness (mm): 0.1-0.6
Correction Speed (m/min): 10
Product Characteristics
The SNL Precision Straightener Machine is specially developed for ultra-thin metal strip leveling applications requiring extremely high flatness and stress control.
Designed for materials ranging from 0.1 mm to 0.6 mm, the SNL series effectively removes coil set, edge waves, and internal stress from delicate metal strips before precision stamping.
With advanced features including SUJ2 precision leveling rollers, floating four-point micro adjustment system, full-drive roller structure, and optional two-stage leveling design, the machine ensures stable material feeding and superior flatness for high-precision manufacturing.
The SNL precision straightener is widely applied in 3C electronics, EV battery components, connector terminals, precision hardware, motor components, and thin metal stamping industries.
1、The SNL Precision Straightener is engineered for ultra-flat leveling of thin and delicate coil materials such as stainless steel, copper, iron, and aluminum.
It is specifically designed for thin material precision stamping where internal stress relief is critical for product quality.
2、The single-stage model is suitable for general thin materials such as stainless steel, copper, and aluminum, offering stable and precise leveling.
3、The two-stage model features a dual-leveling structure (pre-leveling + precision leveling), delivering superior flatness for high-residual-stress or ultra-thin coils.
Specifically designed for high-precision stamping of medium-thin materials. As coil materials cannot produce quality products without stress-relieving leveling, the performance of the leveling machine plays a critical role in production.
4、Engineered for optimal leveling of thin materials (0.1-0.6mm) including stainless steel, copper, iron, and aluminum sheets, delivering flawless flattening results.
5、Constructed with premium SUJ2 imported steel rollers, heat-treated to HRC 60°, precision hard-chrome plated and ground to ensure uniform coating thickness and ±0.002mm cylindricity tolerance.
6、Features a floating four-point balanced micro-adjustment system with dial indicator for rapid precision alignment, enabling swift achievement of optimal leveling parameters.
7、Full-drive dual roller system eliminates power loss and surface scratches caused by passive rotation in conventional models, ensuring energy efficiency and material integrity.
8、Advanced lubrication system enhances operational longevity and maintains micron-level precision during extended production runs.
9、Optional hinged-opening mechanism facilitates quick roller compartment access for debris removal and maintenance.
10、Equipped with auxiliary support rollers between upper/lower leveling shafts to prevent pressure-induced bending deformation. This patented configuration triples roller lifespan while enhancing leveling intensity, achieving superior surface flatness (≤0.05mm/m²) for ultra-thin materials (0.1-0.6mm). Particularly effective for processing high-strength alloys and tempered metals.
| Category | Single-Stage Precision Straightener | Double-Stage Precision Straightener |
|---|---|---|
| Structure | Compact structure with a single set of leveling rollers Material passes through one leveling unit Simple adjustment and easy maintenance | Two-stage design: pre-leveling section + fine leveling section Material goes through two leveling stages sequentially More complex mechanism, longer leveling path |
| Leveling Accuracy | Suitable for medium precision applications or easy-to-flatten materials Adequate for soft or uniform-thickness materials | Higher leveling accuracy, ideal for warped, uneven, or high-residual-stress materials Effectively eliminates internal stress, improves flatness and consistency |
Ultra-thin metal materials often experience deformation and residual stress during rolling, slitting, and coil winding processes.
Without proper leveling before stamping, manufacturers may encounter:
Material feeding instability
Uneven forming results
Product dimensional errors
Surface defects
Increased mold wear
Higher material waste
The SNL precision straightener removes these problems by restoring material flatness and reducing internal stress before production.
The SNL straightener is engineered for seamless integration into automated coil feeding and stamping systems, ensuring stable operation, high precision, and excellent space efficiency.
It can be easily combined with:
Servo Feeders – delivering precise and synchronized material feeding for high-accuracy stamping operations
Decoilers / Uncoilers – ensuring smooth and stable coil unwinding with controlled material tension
Press Machines & Automated Stamping Lines – enabling continuous, fully automatic production with consistent quality
When integrated as a complete system, the SNL straightener helps form a compact, space-saving, and highly efficient coil handling solution, ideal for modern manufacturing environments requiring automation, precision, and reliability.
1、What is a precision straightener?
A precision straightener is a coil processing machine used to remove internal stress, coil set, and waviness from metal strips before stamping operations.
2、What is the difference between a single-stage and double-stage precision straightener?
A single-stage precision straightener is suitable for standard thin materials, while a double-stage model offers enhanced leveling capability for ultra-thin materials and high-residual-stress metals.
3、What materials can the SNL precision straightener process?
It can process stainless steel, copper, aluminum, iron, spring steel, and other thin metal coils ranging from 0.1 mm to 0.6 mm.
4、Can the SNL straightener process copper and aluminum strips?
Yes. The SNL series is specifically designed for delicate non-ferrous materials such as copper and aluminum while maintaining excellent surface quality.
5、What is the difference between a precision straightener and a normal straightener?
A precision straightener provides higher adjustment accuracy, better flatness control, and improved stress relief capability for thin and sensitive materials.
6、Can it be integrated with servo feeders?
Yes. The SNL straightener can be combined with servo feeders, decoilers, and stamping presses to create a fully automated coil feeding system.
7、What industries use ultra thin precision straighteners?
It is widely used in electronics, battery components, automotive electronics, connectors, and precision hardware manufacturing.
Technical Parameters
| Modle | SNL-100 | SNL-200 | SNL-300 | STL-100 | STL-200 | STL-300 | |
| Width | mm | 100 | 200 | 300 | 100 | 200 | 300 |
| thickness | mm | 0.1-0.6 | 0.1-0.6 | 0.1-0.6 | 0.1-0.6 | 0.1-0.6 | 0.1-0.6 |
| Correction Speed | m/min | 15 | 15 | 15 | 15 | 15 | 15 |
| Motor | HP | 1/2HP | 1/2HP | 1HP | 1/2HP | 1/2HP | 1HP |
| Wheel diametor | mm | ø20 | ø20 | ø20 | ø20 | ø20 | ø20 |
| Number of wheels | PCS | - | - | 3/3 Upper/Lower | 3/3 Upper/Lower | 3/3 Upper/Lower | |
| Number of wheels | pcs | 9/10 Upper/Lower | 9/10 Upper/Lower | 9/10 Upper/Lower | 9/10 Upper/Lower | 9/10 Upper/Lower | 9/10 Upper/Lower |
| Segmentl | Single stage | Two stage | |||||
Application
1600 Large-Scale New Energy Lithium Battery Aluminum Casing Blanking Dedicated Automated Stamping Line
Thick-Sheet 3-in-1 Decoiler, Leveler & Feeder System for Automotive Stamping Applications
Customized Dual-Uncoiler 3-in-1 Feeding Line for Automated Stamping of Smart Furniture Hardware Components
2-in-1 Decoiler & Leveling Machines with Servo Feeders: Enhancing Precision in 3C Industry Automation
Ready to streamline your production with reliable stamping automation solutions that boost efficiency, reduce downtime!
Related Products
GJ Type High precision straightener (Thickness: 0.0.5-0.6mm)
High-Precision Design: Engineered specifically for stamping medium-thin materials requiring micron-level accuracy.
FJS Type high-speed straightener (Thickness: 0.3-1.5mm)
The precision-leveled material is transferred to downstream feeders via an S-shaped guiding system.
HCL Type Heavy Duty Coil Straightener(Thickness: 1-6mm)
The leveling adjustment mechanism integrates a compact worm gear and worm wheel system, ensuring smooth torque transmission with reverse self-locking capability.
SFL Precision Straightener Machine for Thin Metal Sheets (0.2–1.2mm)
This series of straightening machine is specially designed to straighten thin stainless steel, copper sheet, iron sheet and aluminum sheet and other thin materials, which can achieve perfect leveling effect
FAQ
Q: How do I determine the right feeder size for my production line?
A: The feeder size depends on the material width, thickness, and feeding step distance required by your stamping press. Choosing the correct specifications ensures smooth operation and prevents feeding errors or misalignment.
Q: What factors should I consider when choosing a servo feeder machine?
A: When selecting a servo feeder, key factors include feeding accuracy (±0.05mm or better), maximum feeding speed (e.g., 20m/min), material compatibility (stainless steel, aluminum, etc.), load capacity, and control system (PLC or touchscreen). Ensure the machine matches your stamping process requirements.
Q: How do I choose the right decoiler, straightener and feeder?
A: Select based on material type, width, thickness, coil weight, and required speed. Match decoiler capacity to coil size, choose a straightener for material strength, and a feeder that meets feed length and precision. Ensure compatibility with your press and automation level.
Q: Coil feeder vs servo feeder: what’s the difference?
A: A coil feeder is a broader system for continuous coil feeding, often integrated with decoiler and straightener. A servo feeder uses servo motors for precise, programmable feeding, ideal for short pitches and high accuracy applications.
Q: How to choose decoiler capacity?
A: Select a decoiler rated 10–20% above your maximum coil weight. Confirm inner diameter (I.D.) compatibility and outer diameter limits. Adjustable mandrels are recommended if you run multiple coil sizes.
Q: What feed precision can I expect?
A: Servo feeders typically achieve ±0.01–0.05 mm, with high-end models reaching ±0.005 mm. Mechanical feeders usually provide ±0.02–0.1 mm. Actual accuracy depends on material properties and straightening quality.
Q: How does material affect machine selection?
A: High-strength materials need stronger straightening and drive systems. Thin materials require low-pressure handling. Soft materials like aluminum need anti-scratch solutions.
Q: What affects feeding accuracy most?
A: Key factors include feeder precision, servo tuning, straightener setup, material quality, and press stability. Poor setup or worn dies can reduce accuracy.
Q: What spare parts should be prepared?
A: Common spares include bearings, belts, sensors, seals, guide blocks, and lubrication parts. Keeping key components reduces downtime and improves maintenance efficiency.
Q: Can feeders be retrofitted to existing presses?
A: Yes, most systems support retrofitting. Check press dimensions, feed height, control compatibility, and safety requirements before installation.
Q: How long does it take to receive the feeder machine after placing an order?
A: Lead time for delivery typically ranges from 4 to 8 weeks depending on customization, production schedules, and shipping location. Once your order is confirmed, we will provide a more precise delivery estimate.
Q: What are your payment terms?
A: We accepts T/T payment, 30% deposit and 70% balance before shipping
Q: How often should I perform maintenance on my servo feeder machine?
A: Routine maintenance should be conducted weekly for basic cleaning and lubrication, while a more thorough inspection should be done monthly to check for wear on rollers, belts, and electrical components. A full servicing is recommended every 6-12 months depending on usage intensity.
Q: What are the most common issues with feeder machines, and how can I troubleshoot them?
A: Common issues include misalignment, inconsistent feeding accuracy, or motor failure. Check for loose bolts, dirt buildup, or software calibration errors. If problems persist, refer to the user manual or contact technical support.
Q: Do you provide on-site repair services if my machine breaks down?
A: Yes, we offer on-site repair services for major issues, along with remote troubleshooting support for minor problems. For urgent cases, we can dispatch a technician within 24-48 hours, depending on your location.
Q: What is the maintenance cycle?
A: Daily cleaning and inspection; weekly check belts, air lines; monthly inspect bearings and guides; yearly replace worn parts. Adjust frequency based on operating hours and workload.
Q: What's the package of your coil feeding machines?
A: For the coil feeding equipment that go LCL shipping, We will use plastic films wrap on the equiment, and then fix it into a wooden box.
For the large coil lines that go FCL shipment, We will fix each part with ropes on the shipping container and then wrapped them with plastic films.
Q: What is the typical lead time?
A: Standard machines usually take 4–8 weeks. Customized systems or full production lines may require 10–20+ weeks depending on complexity and production schedule.
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