Precise braking without oil

Continuous Rotation
Damping torque 1.5 Nm

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.

CAD Drawings


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Continuous Rotation


A30 mm
B10 mm
C13 mm
D3 mm
E46 mm
F38 mm
G26 mm
H10.2 mm
I16 mm
J4 mm

Technical data

Execution standard assembly, one-sided bearing

Damping torque 1.5 Nm

Damping direction right

Construction size Ø 25 mm to 30 mm

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 -10 °C to +60 °C

Mounting in any position

Information to the shaft Ø +0 / -0.03
Hardness > HRC55, surface smoothness RZ < 1µm mm

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 designs available on request.

General information

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