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
2
General instructions
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.
Please always maintain the specified limits from the per-
formance table (technical data). Take into account the
predominant environmental conditions and restrictions.
Note the regulations of the trade association, TÜV or
corresponding national, international and European reg-
ulations. Installation and commissioning only according
to mounting instructions.
Intended use
ACE industrial shock absorbers are used wherever moving masses
are to be slowed down in a defined end position. The industrial
shock absorbers are designed for force capacity in an axial
direction. Within the permissible load limits the industrial shock
absorber also acts as a stop.
Description and function
The ACE industrial shock absorbers MC33-V4A to MC64-V4A are
maintenance-free, ready-to-install hydraulic components with
numerous metering openings.
During the slowing down process the moving mass moves with
kinetic energy and, if necessary, an additional drive energy in
the axial direction of the piston rod with a defined impact velocity
against the rod end button of the shock absorber. Alternatively,
numerous shock absorbers can also be used in parallel. During the
initiated slowing down process the piston rod is pushed into the
shock absorber. The hydraulic oil located before the piston is dis-
placed through all metering orifices at the same time. The number
of effective metering openings reduces in proportion to the driven
stroke. The retraction speed reduces. The dynamic pressure ap-
plied in front of the piston corresponds to the counterforce applied
by the shock absorber and remains approximately constant over
WARNING
The dampers must be dimensioned in such a way that the
calculated values do not exceed the maximum values of the
respective performance table (technical data):
W
3
[Nm/cycle]
W
4
[Nm/h]
Effective weight me
Max. side load angle [°]
For a correct damping design the shock absorber must
represent the only braking system. Additional braking
systems, such as a pneumatic end position damping
length, must not overlap with the end position damping
length by the shock absorber and must be disabled.
Delivery and storage
- After delivery please check the shock absorber for any damage.
- The shock absorber can become damaged if it falls. Carefully
remove shock absorber from the packaging.
- Shock absorbers can generally be stored in any position.
- Storage in the original packaging is preferred.
- Always store shock absorbers in a dry place in order to avoid
oxidation.
- The recommended maximum storage time is three years.
Maintenance and care
Regularly check the shock absorbers for oil loss, return of the
piston rod and external damage.
Shock absorbers are machine elements that are subject to con-
tinuous wear. Increased service life results in reduced damping
effect. If this is no longer sufficient, the shock absorbers must be
replaced or exchanged as appropriate.
Disassembly and disposal
Take account of environmental protection (recovery of problematic
substances) during disposal of the shock absorber. The MC
industrial shock absorbers are filled with NSF-H1 approval special
oil. The corresponding data sheet is available on request.
Faulty dampers can be sent to our service department for
determination of the cause of failure.
WARNING
If ACE industrial shock absorbers 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 can lead to injuries by crushing
during installation of the shock absorber. Secure moving
masses against inadvertent starting with suitable safety
precautions before installing the shock absorbers.
Safety information
Calculation and design
In order to ensure an optimum, fault-free and durable function of
the industrial shock absorbers they must be correctly dimen-
sioned and designed. The following parameters must be known
and used in the calculation:
- Moving mass [kg]
- Impact velocity of the mass into the shock absorber(s) [m/s]
- Additionally acting propelling force, propelling power or propel-
ling torque [N, kW, Nm]
- Number of shock absorbers acting in parallel [n]
- Number of strokes or cycles per hour [1/h]
The correct size of the shock absorbers can be determined
with the ACE online calculation programme at www.ace-ace.de.
You can also send us the completed online form via e-mail for
checking.
Or make use of our free calculation service by phoning: +49
(0)2173 - 9226-20.
General Function
F = Force (N) p = Internal pressure (bar) s = Stroke (m)
t = Deceleration time (s) v = Velocity (m/s)
* The load velocity reduces continuously as you travel through the stroke due to the
reduction in the number of metering orifices (*) in action. The internal pressure remains
essentially constant and thus the Force vs. stroke curve remains linear.
*4
*3
p = 400 bar
v = 2 m/s
*2
*1
*0
p = 400 bar
v = 1,5 m/s
p = 400 bar
v = 1 m/s
p = 400 bar
v = 0,5 m/s
p = 0 bar
v = 0 m/s
F/p
s/t
v
t
the entire stroke. A requirement for a constant rate of deceleration
is the correct calculation of the industrial shock absorber and
therefore the correct selection of the right metering orifice pattern
or the right hardness level of the shock absorber. The hardnesses
are graded from -0 to -4 (hard).
Industrial Shock Absorbers MC33-V4A to MC64-V4A (self-compensating, stainless steel)
Manual
