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FDN-70-L

The flat disc brake for one direction of rotation

Continuous Rotation
Damping torque 8 +/- 0.75 in-lbs

The damping direction of the flat, strong FDN rotary dampers with steel body can be either right or left rotation. They can brake directly in the pivot point. ACE rotary dampers are maintenance-free and ready-to-install.

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FDN-70-L
Continuous Rotation

Dimensions

A3.74 inch
B3.23 inch
C0.40 inch
D0.25 inch
R6.5 inch
E70 inch
F2.57 inch
G0.06 inch
H0.51 inch

Technical Data

Damping torque 8 +/- 0.75 in-lbs

Damping direction left

Construction size Ø 1.85 in to 2.76 in

Rotational speed max. 50 rpm

Lifetime 50,000 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

Mounting In any position

Information to the shaft FDN-47: Ø 6 +0 / -0.03
FDN-57 to FDN-70: Ø 10 +0 / -0.03
Hardness > HRC55, surface smoothness RZ < 1µm inch

Note

Rotary damper products are built to metric specfiications. For precise measurements, please refer to the ACE rotary damper catalog or contact an application expert.

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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