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Motion Control
Product Series
Product families
Basic Types
TYPESDamping torque in-lbsDamping direction
FFD-25FS-L1020.88left
FFD-25FS-L5024.42left
FFD-25FS-L1038.85left
FFD-28FS-L1020.88left
FFD-28FS-L5024.42left
FFD-28FS-L1038.85left
FFD-30FS-L1020.88left
FFD-30FS-L5024.42left
FFD-30FS-L1038.85left
FFD-30FS-L15313.27left

Rotary Dampers
FFD-FS-L

Precise braking without oil

Continuous Rotation
Damping torque 0.89 in-lbs to 26.55 in-lbs

In comparison to other rotary dampers, the ACE FFD product family does not need any fluid to generate the damping torque, but rather works on the principle of friction. That means temperature or speed changes have virtually no influence on the damping torque. The FFD is available in two different body variants and two types of bearings. ACE rotary dampers are maintenance-free and ready-to-install.

Rotary damper products are built to metric specifications. For precise measurements, please refer to the ACE rotary damper catalog or contact an application expert.
Rotary Dampers
FFD-FS-L
Precise braking without oil
Continuous Rotation
Damping torque 0.89 in-lbs to 26.55 in-lbs
ACE Controls Inc. - Image - FFD-FS-L
ACE Controls Inc. © 2023
ACE Controls Inc. - Image - FFD-FS-L

Technical Data

Execution Flange assembly, one-sided bearing

Damping torque 0.89 in-lbs to 26.55 in-lbs

Damping direction left

Construction size Ø 0.98 in to 1.18 in

Rotational speed max. 30 rpm

Lifetime 30,000 cycles (1 cycle = 360° left-hand, 360° right-hand). Even after this time, the dampers still produce over approx. 80 % of their original damping moment. The service life may be significantly higher or lower, depending on the application.

Operating temperature range 14 °F to 140 °F

Material Outer body: Plastic

Mounting In any position

Information to the shaft Ø +0 / -0.001
Hardness > HRC55, surface smoothness RZ < 1µm

Mounting information

Turn the shaft in the opposite direction to the brake direction to avoid damaging the freewheel mount. No axial or radial forces may be induced via the shaft.

Safety information

Do not use rotary dampers as supports. Provide an external guide or support.

On request

Special accessories available on request.

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