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Vane dampers

FYN-S1 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 Operating temperature Weight Main body and cap material Rotor materialOil type
FYN-S1-R104 10 Nm (100kgfcm) 1.5 Nm (15kgfcm) Clockwise 130° -5 ~ 50°C 220±10g Zinc die-cast (ZDC) Polyacetal (POM)Silicone oil
FYN-S1-L104 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.  characteristics
The damper's working angle is 130°. Rotating the damper beyond this angle will cause damage to the damper. Please ensure that an external stopper is in place.
Operating characteristics of self-adjusting oil pressure dampers In a conventional vane damper, the damping strength (damping constant) does not change regardless of the load torque used. Because of this, its working speed is slower when the load torque is small, and faster when the load torque is large. However, because the self-adjusting FYN-S1 series is designed to self-adjust the damping force (damping constant) according to the applied load, the working speed fluctuates less compared to conventional dampers when the applied load is altered. The acceptable range or torque is 5 ~ 10Nm. Please select your damper by referring to the motion-time graph below.
Operating principles