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Vane dampers

FYN-K1 Series
Bansbach vane dampers and dashpots are used to dampen drives, control speed, and many other applications. Our rotational viscous dampers are maintenance free and the most durable units on the market. Bansbach silicone oil viscous dampers are available in either fixed rate or adjustable models. On adjustable vane dampers adjustment is made with an integrated set screw.
The damping direction of the vane dampers with continuous rotation can be clockwise, counter clockwise, or in both directions. In vane dampers with continuous rotation, a fluid damping is produced by the shearing or braking force of silicon fluids resistance between the surfaces of a rotor and a stator. The damping moment is determined by the viscosity of the fluid and the size of the orifice or gap. The damping characteristics can be customized by changing the viscosity of the silicon fluid or by changing the structure of the rotor and stator. vane dampers life-cycles are typically in excess of 50,000 cycles. The service life may be significantly higher or lower, depending on the application. After extended life cycles the dampers still produce over approx. 80% of their original damping moment.
Model Max. torque Reverse torque Damping direction Max. angle Weight Body and cap material Rotating shaft material Oil type
FYN-K1-R403 4 Nm (40kgfcm) 1 Nm (10kgfcm) Clockwise 108° 33±3g Polybutylene terephthalate (PBT) Polyphenylene Sulphide (PPS) Silicone oil
FYN-K1-L403 Counter-clockwise
Damper characteristics vary according to the ambient temperature. In general, the damper characteristics become weaker as the temperature increases, and become stronger as the temperature decreases. This is because the viscosity of the oil inside the damper varies according to the temperature. When the temperature returns to normal, the damper characteristics will return to normal as well. The changes in the time it takes for the lid to close are shown in the graph to the right. FYN-D3 damping characteristics
The damper's working angle is 180° with respect to the attachment flange, as shown below. Please determine where to attach it according to your needs. Also, rotating the damper beyond this angle will cause damage to the damper. Please ensure that an external stopper is in place.
FYN-D3 diagram
The FYN-D3 series is a fixed type; its torque is non-adjustable. However, a customized order for a torque between the range of 5 ~ 10Nm is possible by changing the oil viscosity.
The direction in which torque is generated varies according to the model. Please select the appropriate model for your purpose.