Customization: | Available |
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Function: | Pressed, Buffer |
Material: | Steel |
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Factory direct 3mm diameter coiled steel springs
DOFO has a large rand of steel springs. Choose from our product list and inquiry.
#1 ATTN: Read This Before BuyingA. Due to the internet and computer display solutions. The actual products may differ from
the pictures. Please contact our salesmen for further assistance.
B. All the extension springs, compression springs, torsion springs, wire forms can be made in customized demands.
C. We appreciate Drawing-Guide Production, Please send us a spring drawing as possible as you can when you inquiry.
D. We appreciate your inquiries and you are welcome all the time!
For a better understanding of your demand, please learn the basics of compression spring manufacturing.
#2 Working Drawing of a Compression spring
#3 Different End Types of Helical Compression springs
There are basically four types of ends, closed & ground, closed & not ground ends, open & ground ends, and open & not ground ends. Below is a diagram for illustration.
#4 Different Shapes and Applications of Helical Compression Spring
Compression springs are helical or spiral-like-springs. They demonstrate an open-coiled design and react to axis forces to store and return energy. Manufacturers build compression springs into a variety of products, such as Automobile suspensions, Couches, Mattresses, Vending machines, Medical devices, Pacemakers, Pens, Hydraulic, Medical, Lawn equipment, Firearms, Marine industry, Underwater oil rig piping, Watches
Different products require different shapes to meet their demand. The below diagram covers the common shapes of compression springs, such as conical spring, barrel spring, variable pitch spring, straight coil spring(cylinder spring) which are the most common springs, etc.
Coating Method | Cost | Does it Meet the RoHS requirement? | Remark |
Unplated | None | Yes | |
Anti Rust Oil | Lowest | Yes | |
Black Oxide/Oxide | Lower | Yes | |
Normal Zinc coating | normal | No | |
Trivalent Zinc coating | High | Yes | Normally 8~10μ thickness, 48 hours without white rust |
Nickel Plated | normal | Yes | |
Electrophoresis | Higher | Yes | |
Painting | Very High | Yes | require a longer delivery time |
Stainless steel Washing | normal | Yes | |
Stainless Steel Electro-polish | Highest | Yes | This coating cost more than the others |