A power spring is a flat strip of steel coiled into a spiral that works like a compact energy storage device. When wound up, it stores energy as torque, and as it unwinds, it releases that energy smoothly to create a steady, turning motion — ideal for mechanisms that require smooth return movement or controlled retraction. Made from high-carbon steel, SUS301 stainless steel, SAE1080, or SK5 precision steel strips, our power springs offer excellent fatigue resistance with stable torque output. The lineup includes open-band designs for compact assemblies like timers and clocks, multi-layer types for long-stroke or heavy-duty retraction systems, and housed versions for convenient integration in seat-belt retractors, vacuum cleaners, and automatic rewind mechanisms.
Power Spring PS-001
Open-band power spring wound from flat steel strip on a central arbor. Gentle torque curve, ideal for short-travel devices like car window regulators, toys, and clocks.
Power Spring PS-002
Open-band power spring with wider coil profile for increased energy storage. Ideal for toys, seat belt systems, and cable retractors requiring moderate stroke.
Power Spring PS-003
Open-band power spring with extended stroke and higher torque output. Suited for higher-cycle retraction mechanisms and motorised toy applications.
Power Spring PS-004
Compact open-band power spring with a reduced outer diameter. Ideal for miniaturised instruments, precision timers, and small-format toy motors.
Power Spring PS-005
Housed power spring pre-loaded in a circular case. Plug-and-play convenience for seat-belt retractors, vacuum cleaner cord reels, and auto-rewind mechanisms.
Power Spring PS-006
Heavy-duty housed power spring with higher torque capacity and longer stroke. Used in industrial hose reels, large cable retractors, and heavy rewind systems.
Power Spring PS-007
Multi-layer power spring with concentric coil stacking for maximum energy storage in a compact diameter. Ideal for heavy-duty long-stroke retraction systems.
Power Spring PS-101
Special-series open-band power spring in premium stainless steel or high-carbon alloy. Designed for corrosive, medical, and food-grade environments.
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