Extension Spring (8mm OD, 8kg Max Load, 48-80mm Length)

Extension Spring (8mm OD, 8kg Max Load, 48-80mm Length) is a steel extension spring used to maintain tension on synthetic ropes and cables as the line length changes. The spring has a center-to-center distance of 48 mm when relaxed and can extend up to 80 mm. The loops at the ends of the spring have an internal diameter of just over 4 mm for mounting on an M4 screw. Made from case-hardened spring steel to maintain shape and elasticity for thousands of cycles.

• Weight: 5.2g
• Material: Case-hardened spring steel
• Outer diameter: 8mm
• Maximum load: 8kg
• Length: 48–80mm
• Inner diameter of loops: just over 4mm

Ideal for precisely maintaining tension on ropes and cables in mechanisms with varying line lengths.

Ensures durability and stability of operation even under repeated stretching.