Adhering towards the tenet of 'quality initial, shopper supreme' for Plastic Injection Mold, Silicone Rapid Injection Mould factory, Screw Machine Parts factory. Our company adheres to the principle of quality first, affordable price, and service first, sincerely welcome domestic and foreign users to come to consult and order. With studying and developing new techniques, we are not only following but also leading the fashion industry.
Description
The torsion spring is placed under the door body (closed): one end of the torsion spring is fixed, and the other end is wound to the number of turns required for installation, then the adjusting end of the automatic garage door torsion spring is pushed to the fixed end and tightened to adjust Screws on the flange. The number of turns of the torsion spring = door height ÷ wire wheel circumference + pre-tightening 0.5 to 1 turn.
Put the door on top (ie open state): fix one end of the torsion spring, stretch the torsion spring along the adjusting end by 60 ～ 120mm, pre-tighten 0.5 ～ 1 turn, and finally fix the torsion spring adjusting end on the shaft with screws. Why is the torsion spring stretched? Because the torsion spring's outer diameter will become smaller and the number of turns will increase during the door body lifting process, therefore, the lengthened spring will have a certain gap to facilitate the door body lifting.
Parameter of spring parts
wire diameter | 1mm~1.2mm |
material | carbon steel,alloy spring steel,nickel steel,and stainless steel,zinc steel,pot black steel,phosphor copper,and beryllium copper;etc |
surface treament | black oxide,Zinc/Nicke/Chrome plating,power coating,oiled to prevent rust,passivate,etc. |
Usage | Auto,Furniture,Motor,Car,etc. |
Certificated | ISO 9001,ISO14001 |
Delivery Time | SHIPPING IN TIME WHEN WE GET PAYMENT |
FAQ
Q: Are you trading company or manufacturer ?
A: We are a customized factory.
Q: How long is your delivery time?
A: Generally it is 15-20 days for samples and 25-30 days for mass production, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: How do you ship the goods?
A: We have our cooperation forwarder, they can deliver the goods to you in very short time with competitive price, and you can ship by your own agent as your convenience.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance.
Payment>=1000USD, 30% T/T + 50% Mold Fees in advance, balance before shippment.
B: FOB Tianjin/Beijing. Or EXW, CIF, DUU, ETC
We always regard the production of high-quality Custom Nickel Plated Touch Panel Micro Switch Button Spring for Electrical as the foundation of the enterprise and take improving the product quality and enhancing theresearch and development ability as the development direction of the enterprise. We are based on honesty, adhering to the tenet of survive by quality, developing by innovation, and always regarding the needs of consumers as the starting point and foothold of the troupe. Our company has established long-term cooperative relations with many enterprises based on the tenet of 'intimate service and sincere friends' with good credit and excellent service.