David Smith from Russiawe cooperate with Norvee more than 10 years, we order the tobacco pusher springs and they can provide very good quality, in time delivery.
William from AustraliaNorvee can provide good quality gas spring, we order from them for many years and have very good cooperation.
Bill from USAwe order the music material extension springs from Norvee since 2005, there is never quality problem and we order from them all the time till now.
Seat Belt Retractors Flat Spiral Coil Spring Constant / Variable Force
|Material||Stainless Steel 302||Name||Heavy Duty Tension Springs|
|Length||100mm To 900mm As Your Drawing||Thickness||0.01mm To 10mm|
tension coil springs,
tape measure spring,
seat belt retractors coil spring
stainless steel 302 with 400mm flat spiral coil power springs for the valves
|Material||Stainless steel,carbon steel,62Si2Mn,60Si2Mn,65Mn,SK4,SK5|
|Load type||Constant and variable force|
|Thickness of material||0.08mm~ 1.8mm|
|Wire diameter||0.01mm~ 10mm|
|Inside diameter||As your request|
|Outside diameter||1 mm and above.|
|Length of springs||Free length as you need|
|Surface treatment||Zinc plated, nickel plated, black coating,also can be done as customers request|
|Application||Furniture,industrial equipment,electronic devices,etc|
|Equipments||Advanced CNC computer spring machines with high precision and efficiency|
|Technology||Experienced engineers ,technicians and Skilled Workers|
|Advantage||High quality, competitive prices,automatic production equipment, , safe package and fast delivery|
Applications for power springs
- seatbelt retractors
- tape measures
- retractable dog leads
- electrical cord retractors
- hose reels
- wind-up toys
- pull start on small gas-powered engines
- tool balancers
Power springs are identified by the many coils of strip material stored in a case, barrel, or band, and connected to a central arbor or shaft. When this shaft is rotated, the material starts to wind flat against it. This action creates an increasing torque for as many turns as it can be wound until there is no material left.
Pre-pressed or conventional power springs
Our capabilities of power springs range from 0.002 inch to 0.125 inch material thickness and from 0.030 inch to 3 inch material widths. Power springs can be made using pre-stressed (back wound) or conventional (from flat) methods. Pre-stressed power springs are spooled to a special free diameter and back wound into a housing or keeper, while conventional wound springs are manufactured and wound in the flat state. The advantages of pre-stressed springs are that it allows maximized torque from a specific material. Conventional wound power springs, however, offer increased cycle life.
The clock spring (also referred to as a flat torsion spring) is designed to produce a torsional force (circular movement). In contrast to the tightly coiled motor spring on the previous page, the clock spring has open coils that, when mounted correctly, reduces fricton to zero. However, torque capacity is reduced as a result. The standard range is made from rounded edge stainless steel, which affords a better fatigue life.
Why Choose us?
1. We can provide reasonable price ,fast shipping,timely delivery ,continue developing advancing and innovation.
2. The customers can get high quality products , preferential price , and good service from our company.
3. Our company sincerely welcomes customers from both home and abroad to contact with us.