Product Introduction
Fast and Simple to Install
Extension Springs with Hook Ends are one of the most popular spring types. They have hooks on both ends. This design makes them fast and easy to put in your machine. You do not need special tools. The hook shape changes based on your needs. We make English hooks, German hooks, side hooks, long hooks, and short hooks. Each type fits a different space and force direction. Our product have the right hook angle and opening size. This makes the hook fit tight with your parts. It stops the spring from coming loose during work.
Strong Hooks That Last Long
The hook end is the part that takes the most stress. Some customers worry about hooks breaking. We have solved this problem with good design. We control the hook bend radius with care. We add a bigger round corner at the transition area. We also do local strengthening after heat treatment. This makes our Extension Springs with Hook Ends very strong at the hook. The break rate is below 0.1% under normal use. Our 28 years of experience help us make hooks that last. We know what works and what does not.
Used in Many Types of Machines
Extension Springs with Hook Ends are used in many industries. They work in printing presses and die-cutting machines. They are in car brake systems and home appliance latches. Farming equipment also uses our product. We hold over 85% of China's printing machine market. Most of these machines have our springs inside. We can customize the hook angle from 0° to 360°. The angle precision is within ±3°. You just give us a drawing or a sample. Our team will measure and make the spring for you. This is how we help you get the perfect fit.

Product Specifications
|
Parameter |
Specification Range |
|
Wire Diameter |
0.5mm - 16mm |
|
Outer Diameter |
4mm - 90mm |
|
Free Length |
10mm - 700mm |
|
Material |
Music Wire, 65Mn, SUS304, SUS316 |
|
Hook Type |
English, German, Long, Short, Side Hook |
|
Hook Angle |
Custom (0° to 360°) |
|
Surface Finish |
Black Oxide, Zinc Plating, Nickel Plating, Dacromet, E-coating |
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