12
6 Functional description
The braking of moving masses in the end position is performed by converting kinetic energy into heat using hydraulic
damping.
6.1 Shock absorber characteristic curve
The shock absorber characteristic curve describes the development of force over the stroke of the product. This
development is the result of the design-based buildup of the internal hydraulic friction and throttle effect via the spiral
groove as well as the velocity-dependent loading of the product.
It depends on the following parameters and can vary within the specified ranges:
• Type, viscosity and density of the oil
• Impact velocity
• Energy load due to the impact process
• Temperature
• Wear
6.1.1 Velocity-dependent behavior
The specified technical data apply to the use of the maximum damper stroke.
The force that the product generates depends on the impact velocity.
• A higher velocity corresponds to a higher product force.
• The force curve over the stroke yields the energy absorption per stroke.
INFORMATION
►
During the design process, make sure that the energy load of the application is not greater than the maximum
energy absorption per stroke.
The product is designed so that the maximum energy absorption per stroke is present with a minimum impact velocity.
Up to reaching the maximum impact velocity, the maximum energy absorption per stroke remains the same in order to
prevent the product from being overloaded.
Below the minimum velocity, the product responds more softly and no longer achieves the maximum energy absorption per
stroke.
NOTICE
Non-compliance may result in material damage.
►
Make sure that the maximum impact velocity of the product is not exceeded.
Ö
The resulting high forces can cause an overload, thus damaging the product.
Ö
Because the oil cannot drain quickly enough through the throttle cross-section, bouncing can occur above the
maximum impact velocity.
The individual degrees of hardness tend toward the following character-
istics in the shock absorber characteristic curve:
1
2
3
1
2
3
Stroke [mm]
Force [N]
Hard
Medium
Soft/Supersoft
As a rule, the maximum force increases from the minimum to maximum
impact velocity, whereby the energy is absorbed in an earlier stroke than
the maximum stroke.
Thus the stroke that results or that is necessary for the application can
be lower than the maximum stroke of the product.
►
For more information, refer to the "Setting the stroke and fixed stop"
section.
Zimmer GmbH • Im Salmenkopf 5 •
77866 Rheinau, Germany •
+49 7844 9138 0 • www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS:
PowerStop
DDOC00335 / b
EN / 2023-08-07
Summary of Contents for PowerStop PHE16X10LSAK-A
Page 2: ......
