HANGZHOU NORVEE MACHINERY CO.,LTD
Hangzhou Norvee Machine Co., Ltd Professional Springs supplier in china
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Constant force stainless steel torsion spiral springs for computer monitor
Specifications
constant force spring, torque spring, power spring, constant force compression springs
1) motor brush
2) industrial tools
3) height adjustment
4) medical and healthcare device
5) roller shutter or window balance
6) store propelling shelf and POP display
7) automatically and transportation device
spiral spring, torsion spring
1) timers
2) cord retractors
3) counter balance
4) wind-up toys and games
5) electrical and mechanical reels
| main products | constant force spring, spiral spring, various force spring, shelf spring, machinery spring, power spring, wind-up spring, engine start spring, measure tape spring, toy spring, lifting spring and all kinds of spring shelf pusher system, cigarette shelf pusher, cigarette tray, plastic cigarette divider, etc. |
| equipments | 7 production lines, lots of other advanced equipments |
| techician | 15 technician, 13 QC, 11 R&D stuffs |
| various design | many designs are available |
| material | high carbon steel, stainlees steel SUS301 (the best choice), or to your needs |
| specification | 0.08~0.7mm thickness, 2~80mm width, free length |
| lead time | 2 days for sample, 7~10 days for mass production,will double check after you place order |
| packing | high standard exported PE bag and carton |
| unit price | negotiable |
| trade term | EXW, FOB, C&F, CIF, door to door service, etc |
| payment term | western union, paypal for small amount, T/T |
| our service | 1) Quick responses with full attention within 24 hours. 2) Samples and production status updated promptly. 3) Fast and safe delivery for samples and orders. 4) OEM or ODM orders are welcomed. 5) Best service before and after sales.
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· Tobacco shelf pusher
· seatbelt retractors
· tape measures
· retractable dog leads
· electrical cord retractors
· hose reels
· wind-up toys
· pull start on small gas-powered engines
· tool balancers
· valves
The constant force spring consists of strip material, which has been shaped and pre-tensioned into a tightly wound roll. The spring is used in a linear movement and produces almost constant force throughout its deflection. Constant force springs can be fitted in a number of ways and extended partly or completely. There is practically no limit on extension speed and acceleration.
Torsion springs can either have a left-hand or right-hand helix. They are made to give a force and torque when one leg is turned relative the other.
Our helical torsion springs are made in dimensions from 0.03- 26 millimeter and we select wire diameter, spring body diameter, length and pitch to suit your requirements.
For closed coiled helical torsion springs there will be a friction between the coils giving a hysteresis in the torque-angle performance.
There are generally two common types, single and double coil torsion springs. Normally is the coil controlled inside with a mandrel but also an outer control with a cylindrical housing is possible. With fixed assembled legs the spring type can work without a coil body control. Tangential legs give the lowest stresses but also radial and axial legs of different types are possible. In many cases the strain in the legs must be considered in the design.