60Si2MnA Spiral Rewind Spring for Servomotor Position Cable

This custom flat spiral spring (scroll spring) is specially engineered for servomotor position feedback cable retraction, widely matched with damper actuator systems. Manufactured from premium 60Si2MnA silicon-manganese spring steel, it delivers stable, consistent torque for automatic cable rewinding during full piston stroke movement.

Unlike ordinary 65Mn spring steel, 60Si2MnA features higher tensile strength, outstanding anti-relaxation performance and superior cyclic fatigue resistance, making it ideal for long-term continuous industrial operation with repeated winding & unwinding cycles. Our spring is strictly produced per client technical specifications, with precise segmented winding structure to maintain smooth tension without cable stretching or jamming.

Key Technical Specifications

• Raw Material: 60Si2MnA alloy spring steel strip
• Strip Dimension: 2mm thickness × 39mm width
• Total effective turns: 23 turns (13 tightly wound base turns + 10 spaced working turns)
• Actual max tightening rotation per full stroke: 5.6 turns
• Inner first coil diameter: 40mm | Drive shaft matching diameter: 29mm
• Outer fixing pin diameter: 10mm | Inner straight hook length: 25mm
• Matching housing inner diameter: 275mm
• Surface finish: Black oxide anti-rust treatment (custom paint/Dacromet available)
• Working function: Automatically rewind position feedback cable of servomotor rod

Structural Design Features

1. Segmented winding layout: 13 inner compact base turns stay fully attached during operation to provide stable baseline torque; 10 outer spaced turns serve as flexible working section for stroke retraction
2. Precision formed inner & outer hooks: Standard hook size fits housing fixing pin and motor drive shaft tightly, avoiding slip or fracture under torsion
3. Smooth strip edge machining: No burrs to scratch position cable during retraction, protecting cable integrity
4. Customizable dimensions: We support full customization of strip thickness, width, total turns, hook sizes and torque curves to match different servomotor & damper assemblies

Application Scenarios

• Damper servomotor position feedback cable retraction system
• Industrial actuator linear position sensing cable reel
• Valve control motor automatic cable winding mechanism
• Construction & hydraulic equipment servo reset assemblies