9
4.
Functional description
4.2 Unit in detail
The door openers are single-acting hydraulic cylinders. Extension is hydraulic, retraction is
mechanical by a spring return.
4.1 Description
HT 90
1 Female coupling
2 Cylinder
3 Claw
4 Base
1
2
3
4
1 Female coupling
2 Cylinder
3 Claw
4 Base
1
2
3
4