ACE Controls MC 4550 EUM4 Shock Absorber

2
Industrial Shock Absorbers MC33 to MC64 (self-compensating) Manual 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 performance 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 regulations. Installation and commissioning only according
to mounting instructions.
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 (soft) to -4 (hard).
General Function
v
F/p
s/t
t
F = Force (N) p = Internal pressure (bar) s = Stroke (m) t = Deceleration time (s) v = Velocity (m/s)
v = 2 m/s
Safety information
v = 1 m/s
v = 1,5 m/s
Delivery and storage
v = 0,5 m/s
- 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.
v = 0 m/s
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.
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 to MC64 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 displaced 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 applied in front of the piston corresponds to the counterforce applied
by the shock absorber and remains approximately constant over
Stand 03.2021 21_22_0019 Issue 05.2022
*3
*4 p = 400 bar
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):
W3 [Nm/cycle] W4 [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.
p = 400 bar
*2 p = 400 bar
*1 p = 400 bar
*0 p = 0 bar
* 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.
Calculation and design In order to ensure an optimum, fault-free and durable function of
the industrial shock absorbers they must be correctly dimensioned 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 propelling 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.
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 continuous 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 automatic fluid (ATF) 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.
ACE Stoßdämpfer GmbH · Postfach 1510 · D-40740 Langenfeld · T +49 (0)2173 - 9226-10 (Technik -20) · F +49 (0)2173 - 9226-19
ACE Stoßdämpfer · [email protected] GmbH · www.ace-ace.com