Industrial roller shutter door Torsion springs

 

There are two or more torsion springs for one roller shutter door according to your door size and weight. Four torsion springs will be more safer.

Materials: DIN 17223, JIS G3522, GRS3522.

Wire Diameter: ø4.0~ø12mm

Length: 22”- 157” or customized.

Specification of spring: 1.75'' 2.0'' 2.625'' 3.50” 3.75'' 5.25'' 6'' etc.

Surface treatment: Anti-rust oil, Shot-patented, Galvanized(white zinc, colored zinc), Electrophoresis, Common paint, Automotive topcoat, etc.

Application: the torsion spring can be used for overhead door, high speed door, garage door, sectional door( storage facilities, manufacturing, fire station), rolling service door, impact-able sectional door, rolling sheet door, hangar door, blast door, stadium door, counter door, insulated door, security grilles, Acoustic shutters, low headroom door, Steel Roll-up Truck & Garage Doors, folding sliding door, etc.

 

 

 

Q1: Could I get a sample?

A: Yes, for shorter torsion springs, we can send them to you by express. But for longer ones, it is better to send them to you with other goods by sea.

 

Q2:How can I get the price?

A: Please tell me your ID, wire diameter, length and surface treatment, qty of torsion springs, we will count a best price for you according to them.

 

Q3: What is your lead time?

A: It depends to your quantity. For small order (such as 10pairs), one week is possible. For big order, it will needs two to four weeks.

 

Q4: what is the cycle life of torsion springs?

The life cycle of torsion spring is determined by the size of the wire, the diameter of the spring and the length of the spring. The heavy wire is stronger and can withstand more twisting and bending than lighter wire can. You can choose the suitable one according to your application.

For instance :

when your door weighs 165 Lbs, there will be few options of 2 spring system for you.

207x2x22 springs to get 10,000 cycles

218x2x26 springs to get 20,000 cycles

225x2x33 springs to get 30,000 cycles

The standard torsion spring lasts approximately 10,000 open and close cycles, which is about 7 years of everyday use.

 

Q5:How do you make our business long-term and good relationship?

A:We keep good quality and competitive price to ensure our customers benefit ; We respect every customer as our friend and we sincerely do business and make friends with them.

 

 

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