A constant torque spring is a pre-stressed strip of stainless or carbon steel wound into a coil to deliver a steady rotary force during winding and unwinding. When one end is mounted on a storage drum and the other on an output drum, it produces nearly uniform torque through the full range of motion. This design ensures consistent and repeatable performance, making it ideal for applications such as cable reels, counterbalancing mechanisms, rotary dampers, and controlled return systems. Our constant torque springs can be customised for torque value, dimensions, and material selection to suit specific installation needs. Their compact form and smooth, stable operation make them a reliable choice for automation equipment, precision instruments, and motion-control devices.
Constant Torque Spring CTS-001
Standard constant torque spring — pre-stressed steel strip on dual-drum assembly delivering uniform rotary force for cable retractors, counterweights, and power sources.
Constant Torque Spring CTS-002
Compact constant torque spring for space-constrained rotational mechanisms. Delivers steady torque output for precision instruments and motion-control devices.
Constant Torque Spring CTS-003
High-torque constant torque spring for heavy-duty cable reels and industrial counterbalancing. Wide strip delivers greater torque in the same footprint.
Constant Torque Spring CTS-004
Multi-layer constant torque spring for extended rotational stroke. Stacked strip layers provide high energy storage for long retraction systems.
Constant Torque Springs
High-cycle constant torque springs for demanding rotational applications.
Need a Custom Constant Torque Spring?
Share your specifications and our engineering team will respond within 24 hours.