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Damper list

FYN-U1 Series
RoHS Compliant

fig
Vane Damper [Uni-Directional] Fixed

Specification

Model Max. torque Reverse torque Damping direction
FYN-U1-R103 1 N·m
(10kgf·cm)

 0.5 N·m
(5kgf·cm)		 Clockwise
FYN-U1-L103 Counter-clockwise
FYN-U1-R203 2 N·m
(20kgf·cm)		 0.7 N·m
(7kgf·cm)		 Clockwise
FYN-U1-L203 Counter-clockwise
FYN-U1-R303 3 N·m
(30kgf·cm)		 0.9 N·m
(9kgf·cm)		 Clockwise
FYN-U1-L303 Counter-clockwise

Note) Measured at 23˚C±2˚C

  • Max. angle / 110
  • Operating temperature / –5～50˚C
  • Weight / 12±1g
  • Body and cap material / Polybutylene terephthalate (PBT)
  • Rotating shaft materiall / Polyphenylene Sulphide (PPS)
  • Oil type / Silicone oil
fig

How to Use the Damper

  1. FYN-U1 is designed to generate a large torque just before a lid closing from a vertical position, as shown in Diagram A, comes to a full closure. When a lid is closed from a horizontal position, as shown in Diagram B, a strong torque is generated just before the lid is fully closed, causing the lid to not close properly.
    2. fig
  2. When using a damper on a lid, such as the one shown in the diagram, use the following selection calculation to determine the damper torque.
    3. fig
  3. When connecting the rotating shaft to the other parts, please ensure a tight fit between them. Without a tight fit, the lid will not slow down properly when closing. The corresponding dimensions for fixing the rotating shaft and the main body are as follows.
    4. fig
  4. 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.
    5. fig
  5. The damperʼs working angle is 115˚, as shown below. Rotating the damper beyond this angle will cause damage to the damper. Please ensure that an external stopper is in place. The working angle is based on the width across flat for fixing, located towards the rear end of the main body. The position where the rotation is complete is at 90˚ with respect to the width across flat.
    6. fig
  6. The FYN-U1 series is a fixed type; its torque is non-adjustable. However, a customized order for a torque between the range of 1 ~ 3N·m is possible by changing the oil viscosity.
  7. The direction in which torque is generated varies according to the model. Please select the appropriate model for your purpose.