Principle of function
- In a closed housing a piston is moving back- and forward. A food-safe silicon-oil can flow in both directions through small channels. The viscosity of the oil, as well as the modification of the cross-section of the channels, leads to the friction needed to reduce the speed. The friction-heat will be channeled outside through the cylinder-wall.
- Highest energy-consumption on smallest cross section
- Different damping-characteristics possible
Fluid damper – Volume-compensation
- A: Volume-compensation by means of a spring in an air-filled chamber (ZIMMER-principle)
- B: Volume-adjustment by using a sponge (competitors)
Damper with and whitout reset-function
Damper without reset-function needs a coupler onto the pistonrod is needed to be used within the fitting. The pistonrod do not extract by itself, it has to be extracted manually.
Damper with a integrated reset-function a Coupler is not needed onto the pistonrod within the fitting. The pistonrod will be extracted automatically.
without reset- function
with integrated reset- function
FLUID DAMPER TYPES
defined: speed independent
smooth: depending on speedless opening time constant closing picture small opening force
Fluid damper Classic
The nozzle let the oil flow constantly:
- Highest force on smallest space available
- Force can be modified through the crosssection of the nozzle
- No overload-protection
smooth: Smooth reaction at low velocities
Fluid damper Comfort
Oil is flowing around the piston. The housing is expanding at high pressure whereas through this gap the oil is flowing
- overload-protection
- different graphs possible
smooth: Smooth reaction at low velocities
Fluid damper Versatile
Through these two nozzles the oil can flow constantly. Channels in the housing enhances special cross-sections. Within this example the cross-section becomes smaller during retraction; thus the damping force becomes stronger
- Various damper-characteristics possible
- Force can be modified by varying the cross-section and by changing the number of the channels
smooth: Smooth reaction at low velocities
Fluid dampfer – Opening-movement
Valve disc as well as drillings lead to a minimalized resistance at opening and the damping force needed during closing-movement.
A: Piston defined
B: Piston smooth
C: Bunch-shaped drillings
(max. flow cross-section by means of elongated holes)
Comparsation defined/smooth in self- closing unit
ExampleCharacteristicChiuso 100
load:
70kg sliding door
chart shows the closing time from 0,1–0,5 m/s in different graphs
Opening force is reduced about 30% in version:
smooth
Fluid damper characteristic with constant speed
Product range damper Classic
- Housing length (l) 42 mm bis 67 mm
- Housing diameter (d) 6 mm, 8 mm und 10 mm
- Stroke (s) 5 mm bis 30 mm
- Piston rod diameter (k) 2,3 mm
Product range damper Comfort
- Housing length (l) 29,5 mm bis 151,6 mm
- Housing diameter (d) 6 mm, 8 mm und 10 mm
- Stroke (s) 10 mm bis 100 mm
- Piston rod diameter (k) 1,5 bis 2,3 mm
Product range damper Versatile
- Housing length (l) 42 mm bis 67 mm
- Housing diameter (d) 6 mm, 8 mm und 10 mm
- Stroke (s) 5 mm bis 30 mm
- Piston rod diameter (k) 2,3 mm
