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Rotary dampers

FRT-SB1 Series
Bansbach rotary 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 rotary dampers adjustment is made with an integrated set screw. The damping direction of the rotary dampers with continuous rotation can be clockwise, counter clockwise, or in both directions. In rotary 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. Rotary 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 Rated torqueMax. rotation speed Max. cycle rate Operating temperature Weight Body Material Rotating shaft material Bottom cap Oil type
FRT-SB1 360±120Nm/ (rad/sec) 50rpm 10 cycles/min -20~60°C 11.5±0.5 kg Iron Iron AluminumSilicone oil
frt-sb1 damping characteristics

1. Delayed absorption in linear motion
Formula (N x m/(rad/sec))=FL2t/d

2. Delayed absorption in rotation
Formula (N x m/(rad/sec))= T/ω

3. Impact absorption in linear motion
Formula (N x m/(rad/sec))= MVL2/d

4. Vibrational absorption
Formula (N x m/(rad/sec))= MfL2/0.08