See Product Details

Lee Spring manufactures over 10,000 Stock Compression Springs

Instrument Series Compression Springs (CI Series)

• Wire size .006"-.013"
• Materials: Choose Pre-tinned Music Wire, Passivated Type 302 Stainless Steel or Type 316 Stainless Steel
• Ends: Not ground

Standard Series Compression Springs (LC Series)

Heavy Duty Series Compression Springs(LHC Series)

OVERVIEW
COMPRESSION SPRINGS are open-coil helical springs wound or constructed to oppose compression along the axis of wind. Helical Compression Springs are the most common spring configuration. Generally, they are either placed over a rod or fitted inside a hole. When you put a load on a compression spring, making it shorter, it pushes back against the load and tries to get back to its original length. Compression springs offer resistance to linear compressing forces (push), and are in fact one of the most efficient energy storage devices available.

Materials

All of Lee Spring's music wire Stock Springs are plated, offering added protection against corrosion. Music wire and oil tempered Stock Compression Springs are supplied zinc plated. Music wire is a common high-carbon steel alloy used for spring manufacture. It is cold drawn and offers uniform tensile strength.Instrument Compression Springs and Instrument Extension Springs are either plated or manufactured using pre-tinned wire.
Music wire springs are not recommended for applications where the temperature exceeds 121º C (250º F.)
Music Wire is highly magnetic.

Stainless Steel 302, used in Lee Spring's Stock Springs, exhibits good corrosion resistance for all applications. Lee Spring passivates all Stainless Steel Stock Springs to remove contaminants and improve resistance to corrosion. Stainless steel springs are not recommended for applications where the temperature exceeds 260º C (500º F). Type 302 stainless steel is slightly magnetic. Surface of stainless steel may have a residue of nickel on the surface. This is normal and will not affect the function of the part.

Stainless Steel Type 316, used in Lee Spring's Compression Springs, exhibits superior corrosion resistance due to the presence of molybdenum in this alloy. Lee ultrasonically cleans all Type 316 Stainless Steel Stock Springs, as well as passivating them as described above. It also resists chloride attack and is often selected for use in marine atmospheres. Continuous use of 316 in 800 – 1575°F range not recommended but often performs well in temperatures fluctuating above and below this range

Configurations
The most common compression spring, the straight spring, has the same diameter for the entire length. The straight coil configuration is the standard coil type for Stock Compression Springs. Other configuration options for compression springs include hourglass (concave), conical and barrel (convex) types. These can be manufactured to specification as custom compression springs.

Ends
All Lee Spring Stock Compression Springs, except Instrumentation Compression Series, feature squared and ground ends.

Applications

Compression Springs are found in a wide variety of applications ranging from automotive engines and large stamping presses to major appliances and lawn mowers to medical devices, cell phones, electronics and sensitive instrumentation devices..

Key Parameters

Dimensions: Outer Diameter, Inner Diameter, Wire Diameter, Free Length, and Solid Height.

Spring Rate (stiffness)

Unit of Measures

Lee Spring's Stock Springs are specified in both English (Imperial) or metric units. Be sure to specify the preferred unit of measure when looking for a Stock Spring using Lee Spring's search engines.,

Stress:

The dimensions, along with the load and deflection requirements, determine the stresses in the spring. When a compression spring is loaded, the coiled wire is stressed in torsion. The stress is greatest at the surface of the wire; as the spring is deflected, the load varies, causing a range of operating stress. Stress and stress range govern the life of the spring. The higher the stress range, the lower the maximum stress must be to obtain comparable life. Relatively high stresses may be used when the stress range is low or if the spring is subjected to static loads only. The stress at solid height must be high enough to permit presetting, yet low enough to avoid permanent damage since springs are often compressed solid during installation.