Delivery Time:Up to quantity
Certification:ISO 9001:2008 TS 16949,ROHS
Big Garage Door Springs Oil Tempered Steel TS 16949 ROHS Certification
Specifications:
| Material | oil tempered steel |
| Wire diameter | 8mm |
| Outside diameter | 80mm |
| Total coils | 80 |
| Active coils | 80 |
| Direction | Right/left |
| Hardness | HRC 38-40 |
| Surface treatment | oiled |
| Load type | torsion |
| Style | cylinder |
| Usage | garage door,construction |
Description:
The torsion springs on steel rolling doors work the same way as other torsion springs in the garage door industry. When the door is closed, the spring is wound. The spring is secured to a spring anchor bracket on one end and to the shaft on the other. When the steel rolling door opens, the spring in the barrel supports most of the door weight. The remainder of this weight is lifted by the chain hoist or the operator.
When torsion springs are wound, they grow in length. Since both ends of the torsion springs on steel rolling doors are secured and cannot move, the spring cannot grow in length. There are two options for fixing this problem. You can stretch the spring yourself with a come-a-long before you secure it to the shaft, or your can purchase pre-stretched springs. This allows the coils to be gapped and to lose most of this gapping when the door closes.
Applications:
Garage door springs counterbalance the weight of the door to make it easy to open and close. They serve the same purpose of counter weights used to balance doors in centuries past and in many doors today.
applications of our torsion springs:
Residential sectional garage doors Commerial sectional overhead doors Industry shutter doors One-piece curtain doors mini-warehouse doors Self-storage doors Roll-up doorsHow to order your garage door springs
For quotation,we need info of your torsion spring as follow:
Inside diameter Wire size Length Type of spring ends Gapped or ungappedAnd before production,we will make drawing to let you confirm.
