The A 3X50-SL20S54 is a constant force extension spring made of 301 stainless steel, designed for applications requiring a rated load of 6.99 lb and a minimum fatigue life of 20,000 cycles. It features a band width of 1.5 inches and a band length of 54 inches, with free ends punched for fastening. The spring has a double-hole mounting configuration with a hole radius of 1-1/32 inches and a hole diameter of 9/16 inch.
Industrial fasteners are hardware devices that join two or more items together, creating a semi-permanent or permanent connection. The fasteners most frequently used by machinery designers are screws, nuts, retaining rings, and various types of pins because of the basic role that they play in the assembly of mechanisms. Various industrial hardware components are used in the assembly process including knobs, washers, spacers, shims, handles, springs, spring-powered reels, and ball plunger screws.
Fasteners play a vital role in a wide range of applications, from everyday household items to medical devices, robotics, and even outer space. Careful consideration must be given before selecting the most appropriate fastener for an application.
Download Reference Tables to help with selection:
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Constant Force Springs |
| Product Number | A 3X50-SL20S54 |
| Product Name | Constant Force Spring: 6.99 lb Spring Force, 20000 cycles Fatique Life, 54" Band length |
| Material | 301SS |
| Life Cycle | 20000 cycles |
| Load Force | 6.99 lbs (3.17 kg) |
| Inside Diameter | 2.62 inch (66.67 mm) |
