Ace FDT Service manual

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.comStand 03.2021 ACE Stoßdämpfer GmbH · www.ace-ace.com21_22_0019 Issue 05.2022
FDT
FDT
Rotary Dampers
The flat disc brake for two-sided damping
Continuous rotation
Damping torque 2 Nm to 8.7 Nm
Table of contents Page
General instructions................................. 2
Safety information ................................... 2
Intended use........................................... 2
Description and function........................... 2
Calculation and design ............................. 2
Delivery and storage ................................ 2
Maintenance and care.............................. 2
Disassembly and disposal......................... 2
Mounting instructions................................ 3
Warranty ................................................. 4
Expected service life................................. 4
Technical data.......................................... 4
Operating and mounting instructions
General instructions and technical details

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.comStand 03.2021 ACE Stoßdämpfer GmbH · www.ace-ace.com21_22_0019 Issue 05.2022
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α
Calculation and design
In order to ensure an optimum fault-free and durable function of the rotary dampers, they must be correctly dimensioned and designed. The following parame-
ters must be known and used in the calculation.
- Temperature
- Damping torque
- Speed
- Cycle number
Should you have any further questions about the use of rotary dampers, please contact one of our ACE technicians.
For free calculation service, phone: [phone] - 9226-20.
Calculation steps
1. Calculate torque for unfavourable angle
(see example on left: 0°).
2. Determine angular speed.
3. Choose a suitable rotary damper for the calculated torque.
4. With the aid of the damper performance curve, check whether
the rpm matches the desired speed.
5. If the rpm is too high – choose a higher torque.
6. If the rpm is too low – choose a lower torque.
Torque
M = L / 2 · m · g · cos α
(L / 2 = centre of gravity)
mMass in kg [1 kg = 9.81 N]
LFlap length in cm
nSpeed in rpm
Calculation example: Damping of a flap
In order to select a suitable rotary damper for the calculation
example shown, the length and the weight or centre of gravity of
the flap must be specified. Once the max. torque value with an
unfavourable angle of the flap has been determined, a suitable
brake is selected.
General instructions
Intended use
ACE rotary dampers ensure the controlled opening and closing of
small covers, compartments and drawers. They can brake directly
at the pivot point or linearly via rack and pinion to attain a smooth
and quiet movement. Sensitive components are preserved. The
harmoniously gentle process increases the quality and value of
the product.
Description and function
With continuously rotating rotary dampers, fluid damping is facil-
itated through shearing of thin silicone layers between the areas
of a rotor and a stator. The damping torque is determined by the
viscosity of the fluid or the dimensioning of the damping orifice.
ACE rotary dampers are maintenance-free and ready-to-install.
The damping direction is two-sided. The outer bodies are made of
steel. Power is transmitted via a square mount.
Safety information
This manual is for the disruption-free use of the product
types listed on page 1; its compliance is a prerequisite
for the fulfilment of any warranty claims.
Therefore, make sure to read this manual before use.
Always maintain the limits specified in the performance
table. Take into account the predominant environmental
conditions and restrictions. Note the regulations of
the trade association, TÜV or corresponding national,
international and European regulations. Installation and
commissioning only according to mounting instructions.
Delivery and storage
- After delivery please check the rotary dampers for any damage.
- The rotary damper can become damaged if it falls. Carefully
remove rotary damper from the packaging.
- Rotary dampers can generally be stored in any position.
- Storage in the original packaging is preferred.
- Always store rotary dampers dry.
- The recommended maximum storage time is two years.
- Storage of rotary dampers is permissible at -20 °C to +70 °C.
Maintenance and care
Regularly check the rotary damper for oil loss and external dam-
age. Rotary dampers are machine elements that are subject to
continuous wear. Increased service life results in reduced braking
effect. If this is no longer sufficient, the rotary dampers must be
replaced or exchanged as appropriate.
Disassembly and disposal
Take account of environmental protection (recovery of problematic
substances) during disposal of the rotary dampers. The rotary
dampers are filled with silicone oil. The corresponding data sheet
is available on request. By design, the silicone oil cannot be
refilled. The rotary dampers cannot be repaired. Faulty brakes can
be sent to our service department for determination of the cause
of failure.
WARNING
If ACE rotary dampers are used where a failure of the
product could lead to personal injuries and/or material
damage, additional safety elements must be implemented.
Free-moving masses, such as lids, flaps, covers etc., can
lead to injuries by crushing during installation of the rotary
dampers. Secure moving flap/mass against falling down!
Rotary Damper FDT (continuous rotation)
Manual

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.comStand 03.2021 ACE Stoßdämpfer GmbH · www.ace-ace.com21_22_0019 Issue 05.2022
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Mounting instructions and mounting accessories
Construction size: Ø 47 mm to 70 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: -10 °C to +50 °C
Damping medium: Silicone oil
Material: Outer body: Steel; Output shaft sleeve: Nylon
Damping direction: Top view of the shaft left-hand (L) =
anticlockwise, right-hand (R) = clockwise.
Mounting: in any position
Mounting information: Secure brake at the mounting holes and
connect the part to be braked via a suitable shaft to the output
shaft sleeve. An external guide or support of the moved part is
recommended. Thanks to the flat design, numerous dampers can
be fitted in parallel to increase the damping torque.
No axial or radial forces may be introduced via the shaft. The
rotary axis was not designed for side loading (see diagrams).
Safety instructions: Do not use rotary dampers as supports.
Provide an external guide or support.
On request: Special designs available on request.
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
12/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.
12
10
8
6
4
2
0
FDT-70
FDT-63
FDT-57
FDT-47
Nm
0 10 20 30 40 50
rpm
12
10
8
6
4
2
0
FDT-70
FDT-63
FDT-57
FDT-47
Nm
0 10 20 30 40 50 °C
A
B
R
C
D
Ø
H
E
G
F
ØØ
C-0.02
-0.1
0
-0,1
J
Ø
Recommended Drive
Shaft Size
Characteristic curves
At 23 °C ambient temperature
FDT
At 20 rpm speed
Performance data and dimensions
TYPES
1Damping torque
Nm
Damping direction A
mm
B
mm
C
mm
D
mm
E
mm
F
mm
G
mm
H
mm
R
mm
J
mm
Weight
kg
FDT-47 2.0 +/- 0.3 two-sided 65 56 8 4.5 47 42.8 1.6 10.3 4.5 10 0.050
FDT-57 4.7 +/- 0.5 two-sided 79 68 10 5.5 57 52.4 1.6 11.2 5.5 13 0.075
FDT-63 6.7 +/- 0.7 two-sided 89 76 12.5 6.5 63 58.6 1.6 11.3 6.5 17 0.095
FDT-70 8.7 +/- 0.8 two-sided 95 82 12.5 6.5 70 65.4 1.6 11.3 6.5 17 0 . 110
1The indicated damping torques refer to a rotational speed of 20 rpm and an ambient temperature of 23 °C.
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.
Rotary Damper FDT (continuous rotation)

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.comStand 03.2021 ACE Stoßdämpfer GmbH · www.ace-ace.com21_22_0019 Issue 05.2022
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Warranty
Fundamentally, all modifications to the product by third parties
lead to exclusion from the warranty.
Obvious defects must be reported to the vendor in writing immedi-
ately after delivery, no later than one week, but in any case before
processing or installation, otherwise the assertion of a warranty
claim is excluded. A timely dispatch is sufficient to keep the term.
The vendor is to be given an opportunity to check on site. If the
complaint is justified the vendor offers warranty by repair or re-
placement at its own discretion. If the rectification fails, the buyer
may choose to demand reduction of payment or cancellation of
the contract. If there is only a minor lack of conformity, particularly
with only minor defects, the buyer nevertheless has a right of
withdrawal.
If, after failed rectification, the buyer chooses to cancel the
contract due to a defect of title or material defect, they are not
entitled to additionally claim for damages.
If, after failed fulfilment, the buyer chooses compensation, the
goods remain with the buyer, if this is reasonable. The compen-
sation is limited to the difference between the purchase price and
the value of the defective item. This does not apply if the vendor
maliciously causes the breach of contract.
The quality of the goods is only considered as agreed upon with
the product description of the vendor. Public statements, claims
or advertising of the manufacturer do not represent an additional
contractual specification of quality of the goods.
If the buyer receives defective mounting instructions, the buyer
is only obligated to deliver defect-free mounting instructions and
only if the defect to the mounting instructions prevents proper
mounting.
The warranty period is two years and begins upon completion.
Exchange and return of custom products are fundamentally
excluded. The factory conditions of the manufacturing factory
apply to parts not manufactured and processed by the vendor,
which can be viewed by the orderer at the vendor at any time.
Construction and installation parts are delivered according to the
present standard of engineering.
Manufacturer's declaration as part of the EC Machinery Directive 2006/42/EC
We hereby declare that the model of industrial shock absorbers, industrial gas springs, hydraulic dampers, rotary dampers and profile
dampers or individual positions thereof are intended for installation in a machine in the execution delivered by us. Its commissioning
is forbidden until such a time that it is established that the machine, into which the elements above are to be fitted, meets the regula-
tions of the EC Directive version 2006/42/EC of 17 May 2006.
The products listed above are not autonomous or incomplete machines and do not fall under the Machinery Directive 2006/42/EC.
Applied harmonised standards are EN 983 and DIN EN 60204, in particular.
This declaration is not an assurance of properties in the sense of the product liability law. The safety information of the product
information should be observed.
Jürgen Roland Langenfeld, 11.09.2013
(Executive Director)
Manufacturer's declaration
Expected service life
ACE rotary dampers are generally tested for a lifetime of 50,000
cycles with a max. speed of 50 rpm and a max. cycle number of
10/min. After this the dampers still have approx. 80 % of their
original damping torque. Depending on use the service life can
be significantly longer or shorter. In practice significantly longer
lifetimes have been achieved.
Rotary Damper FDT (continuous rotation)
Manual