HEMA offers three different drive concepts for its roller blind covers:
Torsion springs TF
This drive is suitable for high mileages at low stress and for plastic belts. The springs are made of a high-quality special wire, which achieves an up to ten times longer service life than conventional spring wires.
Steel belt motor SA
A steel belt motor should be used in applications with high tensile load. The outer band used for the cover serves as a spring motor at the same time.
Steel belt motor FM
This motor is also suitable for high tensile load.