Description
Product Overview
The SUS301 constant force spring is engineered to deliver a uniform pulling force of 1.48 lb across its entire extension range. Constructed from high‑grade spring steel, each coil is precision‑wound to maintain consistent tension, eliminating the need for complex tensioning mechanisms. The spring features a 0.44 in inner diameter (ID) and a 0.52 in outer diameter (OD), with a total relaxed length of 20.98 in and an extended length of 17.99 in, providing ample flexibility for a wide variety of mechanical applications. Packaged in sets of five, the product is ideal for bulk installations, ensuring that you have sufficient inventory for multiple devices or replacement cycles. The manufacturing process adheres to strict quality standards set by Shanghai PreciseSpring, guaranteeing reliability even in harsh industrial environments.
Usage
These constant force springs excel in applications where a steady load is essential. Common use cases include counterbalance systems for heavy doors, window mechanisms, and elevator doors, where the spring offsets the weight of the moving component to provide smooth operation. They are also well‑suited for cable retractors in packaging equipment, hose reels in automotive service stations, and tensioning devices in conveyor belts. The compact dimensions allow for easy integration into confined spaces, while the robust construction ensures longevity under continuous cycling. Whether you are designing a new piece of equipment or retrofitting an existing system, the SUS301 offers a plug‑and‑play solution that reduces maintenance downtime and improves overall system efficiency.
Why Choose Us
Choosing Shanghai PreciseSpring means selecting a partner committed to engineering excellence and customer satisfaction. Our constant force springs undergo rigorous testing for load consistency, fatigue resistance, and dimensional stability, ensuring that each unit performs exactly as specified. We source raw materials from certified suppliers and employ advanced heat‑treatment processes to enhance spring durability. In addition to product quality, we provide comprehensive technical support, including installation guidance, performance troubleshooting, and custom spring design services. Our responsive after‑sales team is available to address any concerns, offering replacement parts and warranty options that give you confidence in the long‑term reliability of your investment.
Key Features
- Consistent 1.48 lb pull ensures smooth operation in counterbalance applications.
- High‑grade spring steel construction delivers exceptional durability and fatigue resistance.
- Compact 0.44 in ID and 0.52 in OD dimensions fit easily into tight mechanical spaces.
- Pack of five springs provides cost‑effective bulk purchasing for large‑scale projects.
- Dedicated technical support and warranty service for peace of mind.
FAQ
What is the maximum extension length of the SUS301 spring?
The spring can be extended up to 17.99 in while still maintaining its rated 1.48 lb pulling force.
Can the spring be used in outdoor environments?
Yes, the spring’s stainless‑steel coating provides corrosion resistance suitable for outdoor and marine applications.
Is a custom length or load rating available?
Shanghai PreciseSpring offers custom spring design services. Contact our engineering team to discuss specific load or dimensional requirements.
How do I install the spring to achieve optimal performance?
Mount the spring at the point where the force is required, ensuring that the ends are securely anchored. Align the spring’s axis with the direction of the applied load to avoid lateral stresses.
What warranty does the product include?
The SUS301 spring comes with a one‑year limited warranty covering material defects and premature failure under normal operating conditions.
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