Roller Shade Constant Force Springs
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Roller shade springs can be used for pulling roller curtains because they can release a constant force with the proper value. The constant force springs can be made of stainless steel SUS301, BTX carbon steel and other materials are available upon request. The fatigue lifetime of roller shade spring is over 13000 times. Constant tension springs have thickness of 0.2-0.3mm, width of 10-30mm, length of 1000-3000mm and the sizes can be adjusted to match with different products.
One of the roller shade springs made by Zongda is shown as below:- Size: 0.23mm*20mm*3000mm (thickness*width*length)
- Material: Stainless steel SUS301
- Hardness: HV490-510
- Fatigue lifetime: Over 10000 times
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