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ACE Stoßdämpfer GmbH  ·  Postfach 1510  ·  D-40740 Langenfeld  ·  T +49 (0)2173 - 9226-10 (Technik -20)  ·  F +49 (0)2173 - 9226-19  ·  [email protected]  ·  www.ace-ace.com

Stand 03.2021

ACE Stoßdämpfer GmbH  ·  www.ace-ace.com

21_22_0019 Issue 05.2022

3

Mounting instructions and mounting accessories

Construction size: 

Ø 10 mm

Max. speed: 

50 rpm

Lifetime: 

50,000 cycles (1 cycle = 360° left-hand, 360° right-

hand), at least 80 % of the original damping torque after this. The 

service life may be significantly higher or lower, depending on the 

application.

Operating temperature range: 

0 °C to +50 °C

Pressure angle:

 20°

Material: 

Outer body, shaft, gear: Plastic

Mounting:

 in any position

Tooth: 

Involute gearing

P.C.D.:

 6 mm

Number of teeth:

 10

Module:

 0.6

Damping medium:

 Silicone oil

Mounting information: 

Attach the damper to the securing tabs 

in such a way that the part to be braked cannot exert any side 

forces on the damper. No axial or radial forces may be introduced 

via the shaft. The rotary axis was not designed for side loading 

(see diagrams).

Packaging disposal: 

Please dispose of the transportation pack-

aging in an environmentally-friendly manner. Recycling packaging 

materials saves raw materials and reduces waste. The packaging 

materials do not contain any prohibited materials.

Angular offset

Misalignment

Side loading 

End loading

Note! The rotary axes, square mounts or free-wheel 

mounts are not designed for side loading.

Installation instructions

Before installation and use check whether the identification num-

ber on the product or on the packaging matches the respective 

designation on the delivery note. 

Rotary dampers are maintenance-free and ready-to-in-

stall.

WARNING

The specified rated damping torque  

applies at a temperature of 23 °C or a  

speed of 20 rpm. 

The damping torque can change depending 

on the temperature or speed. Please observe the characteristic 

curves in the mounting instructions.  

The flap/mass can fall off during installation and removal 

of the rotary damper.

 Secure moving flap/mass against falling 

down!

Depending on the application, failure of the product could 

lead to personal injuries and/or material damage. 

Use 

additional safety elements.

Exceeding the permissible temperature range, the max. 

speed, the cycle number and the specified damping torque 

can lead to premature failure or destruction of the rotary 

damper.

 Operating temperature range, speed of 50 rpm, cycle 

number of 10/min. and the specified damping torque must be 

maintained.

Dirt, swarf and aggressive liquids can cause premature 

failure of the rotary damper. 

Protect or encapsulate rotary 

damper from external materials in the surrounding area.

Do not use rotary dampers in high-pressure or vacuum 

range.

0.8

0.6

0.4

0.2

0

400

300
200
100

Ncm

0 3 5  10 

20 

30 

40 

50

rpm

0.6
0.5
0.4
0.3
0.2

0.1

0

400
300

200

100

Ncm

 

0  10 20 30 40 50

°C

14 +/- 0.05

2 +/- 0.05

2.1

2.6

2.5 +/- 0.05

10

2.1

6

Ø

Ø

Ø

19

1.5

3

2.5

6 (5.5)

7.2

Ø

Dims. in ( ) without gear

Performance data

TYPES

1

 Damping torque

Ncm

Damping direction

Gear

Module

Number of 

teeth 

Pressure angle

°

P.C.D.

mm

Weight

kg

FRT-E2-100

0.10 +/- 0.05

two-sided

without

-

-

-

-

0.00032

FRT-E2-200

0.20 +/- 0.07

two-sided

without

-

-

-

-

0.00032

FRT-E2-300

0.30 +/- 0.08

two-sided

without

-

-

-

-

0.00032

FRT-E2-400

0.40 +/- 0.10

two-sided

without

-

-

-

-

0.00032

FRT-E2-100-G1

0.10 +/- 0.05

two-sided

with

0.6

10

20

6

0.00041

FRT-E2-200-G1

0.20 +/- 0.07

two-sided

with

0.6

10

20

6

0.00041

FRT-E2-300-G1

0.30 +/- 0.08

two-sided

with

0.6

10

20

6

0.00041

FRT-E2-400-G1

0.40 +/- 0.10

two-sided

with

0.6

10

20

6

0.00041

1

 The indicated damping torques refer to a rotational speed of 20 rpm and an ambient temperature of 23 °C.

Characteristic curves

At 23 °C ambient temperature

FRT-E2

At 20 rpm speed

Safety instructions: 

Do not use rotary dampers as supports. 

Provide an external guide or support.

On request: 

Special designs available on request. Toothed 

plastic racks (modules 0.5 to 1.0) are available for the rotary 

dampers with pinions.

Rotary Damper FRT-E2 (continuous rotation)

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