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Custom Spring 17-7PH Stainless Steel 1500N Load Constant Force Spring
Product Spotlights
Custom 17-7PH stainless steel constant force spring with 1500N load capacity, offering consistent tension over full deflection. High corrosion resistance, fatigue life, and customizable dimensions. Backed by 25+ years of manufacturing expertise and global export experience from China.
Negotiable
MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, 17-7PH Stainless Steel
Load Capacity:
1500N
Type:
Constant Force Spring
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, 17-7PH Stainless Steel
Load Capacity
1500N
Type
Constant Force Spring
Customization
Available (Length, Width, Thickness, Coil Count)
Surface Finish
Optional (Passivation, Polishing, etc.)
Application
Industrial, Automotive, Aerospace, Medical Devices
Operating Temperature
-40°C to 300°C (Approx.)
Tensile Strength
High (≥ 1400 MPa typical)
Welcome to Anping County Boli Hardware Wiremesh Products Factory – your trusted manufacturer of custom precision springs since 1998. With over two decades of expertise and an annual export value exceeding US$5 Million, we are proud to introduce our Custom Spring 17-7PH Stainless Steel 1500N Load Constant Force Spring. This product is engineered to deliver consistent, reliable performance in demanding applications, combining the unique properties of 17-7PH stainless steel with a constant force design that ensures uniform tension over a wide deflection range. Whether you need a standard size or a fully customized solution, our factory in Hengshui, Hebei, China, is ready to meet your specifications with precision and quality.
Product Features & Technical Specifications
- Material Excellence: Made from 17-7PH (UNS S17700) stainless steel, a precipitation-hardening alloy that offers high strength, excellent corrosion resistance, and good fatigue life. This material is ideal for applications requiring both durability and resistance to harsh environments.
- Constant Force Design: Unlike traditional springs that exhibit increasing force with deflection, our constant force spring provides a nearly flat load-deflection curve. This means the spring exerts a steady 1500N force over its entire range of travel, ensuring consistent performance in mechanisms like counterbalances, retractors, and tensioners.
- High Load Capacity: Rated for a 1500N (approx. 337 lbs) load, this spring is suitable for heavy-duty industrial applications, including automotive seat recliners, elevator safety devices, and heavy equipment assemblies.
- Customizable Dimensions: We offer full customization – length, width, thickness, coil count, and end configurations can be tailored to your exact requirements. Typical dimensions range from 10mm to 500mm in length, 5mm to 100mm in width, and 0.1mm to 2.0mm in thickness.
- Precision Manufacturing: Our springs are produced using advanced CNC coiling machines and heat treatment processes, ensuring tight tolerances (±0.1mm on critical dimensions) and repeatable quality batch after batch.
- Surface Finish Options: Available in passivated, polished, or as-rolled condition. Passivation enhances corrosion resistance, while polishing reduces friction and improves appearance.
Typical Mechanical Properties (Reference)
| Property | Value |
| Tensile Strength (min) | 1400 MPa |
| Yield Strength (0.2% offset) | ≥ 1200 MPa |
| Hardness (HRC) | 40-48 |
| Elongation at Break | ≥ 8% |
| Operating Temperature Range | -40°C to +300°C |
Key Advantages for Your Business
- Consistent Performance: The constant force characteristic eliminates the need for adjustment or compensation in your assembly, reducing design complexity and improving product reliability.
- Long Service Life: 17-7PH stainless steel offers excellent fatigue resistance, allowing the spring to withstand millions of cycles without significant loss of force.
- Corrosion & Heat Resistance: Ideal for use in outdoor, marine, or high-temperature environments where ordinary carbon steel springs would fail.
- Space & Weight Savings: Constant force springs can achieve high loads in a compact package, saving valuable space and reducing overall product weight.
- Flexible Procurement: As a manufacturer with direct control over production, we offer competitive pricing, low MOQs (as low as 100 pieces for custom orders), and fast lead times (typically 15-25 working days).
Trusted by Global Markets
Since 1998, Anping Boli has been a reliable partner for clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our annual export value of US$5-10 million reflects the confidence customers place in our quality and service. We ship from major ports including Tianjin, Qingdao, and Shanghai, ensuring efficient logistics to any destination. Our factory is equipped with modern inspection tools to guarantee that every spring meets your specifications. We do not claim unverified certifications, but we are happy to provide material test reports, dimensional inspection reports, and samples upon request.
Frequently Asked Questions
-
Q: What is the difference between a constant force spring and a regular spring?
A: A constant force spring delivers a nearly uniform force throughout its deflection, whereas a regular spring (e.g., helical) increases force linearly. This makes constant force springs ideal for applications requiring steady tension, such as counterbalance mechanisms. -
Q: Can you supply springs with a load other than 1500N?
A: Yes, we can customize the load capacity by adjusting material thickness, width, and coil geometry. Contact us with your specific requirements, and we will provide a design and quotation. -
Q: What is the typical lead time for custom springs?
A: For standard custom sizes, lead time is usually 15-25 working days, depending on quantity and complexity. Rush orders may be available upon request. -
Q: Do you offer samples before mass production?
A: Absolutely. We can provide samples for evaluation. Sample cost is negotiable, and we will deduct it from the final order if you proceed with mass production. -
Q: What is the minimum order quantity (MOQ) for this product?
A: For custom designs, MOQ is typically 100 pieces. For standard sizes, we may accept smaller quantities. Please inquire for details. -
Q: How do you ensure the spring quality during production?
A: We implement a strict quality control system, including incoming material inspection, in-process dimensional checks, and final load testing. Each batch is accompanied by a test report if required. -
Q: Is this spring suitable for high-temperature environments?
A: 17-7PH stainless steel can operate up to approximately 300°C (572°F) continuously. For higher temperatures, we can discuss alternative materials like Inconel. -
Q: What surface treatments are available?
A: We offer passivation, electropolishing, and custom finishes. For springs used in clean rooms or medical devices, special cleaning and packaging can be arranged.
Conclusion: Choose Anping Boli for your custom spring needs – combine decades of experience, global reach, and a commitment to precision. Contact us today to discuss your project or request a quote.
Send Inquiry to This Supplier
Mr. Geng Xiaozhong
Sales Manager
2Yrs
Hengshui, Hebei, China
2Yrs
Business Type
Manufacturer
Year Established
1998
Annual Export Value
US$5 Million - US$10 Million
Product Certifications
Others
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