Spring Properties
Also known as extension springs, these parts feature a hook at each end of a tightly wound coil to produce tension. The hook is shaped to fit with the part it attaches to. Aoi Spring can offer solutions delivering the tension and safe hooks you need.
Tension coiled spring with complex hook
Materials: SWP-A
Wire diameter: Φ2.0mm
Application: Agricultural machine parts
Tension coiled spring with small D/d Index
Materials: SWP-A
Wire diameter: Φ3.2mm
Application: Control cable parts
Tension coiled spring with diagonal hook
Materials: SUS304-WPB
Wire diameter: Φ2.6mm
Application: Hose clamp parts
Types of Hooks
●Semi-circle hook
The coil is formed into a semi-circle at the end for a hook
●Circle hook
The coil is formed into a full-circle at the end for a hook
●Reverse circle hook
The coil is twisted in the direction opposite to the winding to form a circle for a hook
●Side circle hook
The coil is formed into a circle on the side for a hook
●Square hook
The coil is formed into a square-shaped hook at the end
●U-hook
The coil is formed into a U-shaped hook at the end
●V-hook
Fashioned into a V-shaped hook at the end, as shown in the figure
●Squeezed circle hook
The coil is wound gradually smaller toward the end, where there is a circle hook
●Screw-on hook
Unlike other tension springs, the end of the coil is not processed into a hook. Rather, another metal fitting is screwed into the coil.
●Diagonal circle hook
Forms the coil into a circle at a diagonal angle
Notable Achievements
Available Thickness
φ 0.2 mm – φ 4.0 mm
Materials Track Record
| SUS304-WPB | SUS304-WPA | SUS316 (chemical-resistant) |
| SUS631 (precipitation hardening) | SW-B | SW-C |
| SWP-A | SWP-B | zinc-plated wire |
| nickel plated wire |
Applications
White goods
lid hinges
Medical
electric pump components
Residential
sliding door mechanical components
What Makes Aoi Spring Special
* We can offer solutions delivering the tension and safe hooks you need.
