Strip springs

Power springs

The power spring gets its name from the fact that it has the property of driving a shaft mechanism with its stored energy. It’s usually used for applications with limited space to accommodate the spring part.

• Spring width: 1.8 - 100 mm
• Spring thickness: 0.05 - 3.0 mm
• Material: Martensitic spring strip steels, textured carbon and stainless steels
• Service life: Very long, depending on the design
• Up to 30 working rotations

Typical applications of power springs include:

• Cable and hose retractors
• Fall protection devices
• Balancers
• Actuators
• Starter springs in small clockwork motors
• Timepieces
• Overhead line systems

Maximo power springs

The Maximo power spring features an S-shape with cross-camber, minimum hysteresis, characteristic line within working range in straight line with minimum gradient and greatest energy storage capacity. KERN-LIEBERS has developed and built very sophisticated machinery internally for the special manufacturing processes for Maximo power springs.

• Spring width: 1.8 - 100 mm
• Spring thickness: 0.05 - 0.55 mm
• Material: Textured carbon and stainless steels
• Service life: Up to 500,000 load cycles (typical applications require 100,000 - 200,000 cycles)
• Up to 50 working rotations
• Flat characteristic curve in the work area, low hysteresis
• The material volume is fully exploited at maximum torque
• Characteristic S-shape in unwound exposed position

Typical applications of Maximo springs include:

• Seat belts
• Dog leashes
• Cable retractors
• Roller blind drives of all types
• Measuring tapes