FAQ

Always over the entire surface, otherwise overstressing may occur or the function of the vibration insulation may be impaired. The design by an isoloc technician is always based on this! Are the isoloc elements UMS, NT, NTS, NTR also available in a different color?

Of course, we can also supply the elements in a different color. Please ask us.

The load-bearing capacity of our vibration insulation panels and vibration insulation packages is specified with the compressive stress, which has the unit N/cm² or N/mm².

UMS: Universal precisionmachineshoe
ASF: screw-onand free-standing
DSF: screw-throughand free-standing
ASA: Screw-onwith bevelcompensation
DSA: Screw-throughwith bevelcompensation
IPL: Insulatingplate
GPL: Anti-slipplate
IPK: Insulatingpackage

Yes, all isoloc vibration isolation and anti-slip panels are silicone and PVC-free.

What machine data etc. does isoloc need to design a vibration isolation system and prepare a quotation?

We require the following information for simple standard isolations:

• Machine weight including workpiece / tool weight.
• Type and model of the machine.
• Size of the dynamic forces or moving masses.
• Position of the center of gravity.
• Number and dimensions of the installation points.
• Information on whether a machine must be anchored.
• Information on rigid connections and feeds to the machine or interlinked units.
• Installation location of the machine, e.g. first floor or storey.

Simply use our isoloc-questionnaireon our contact page.

Most of the isoloc materials used are resistant to oil and cleaning agents, coolants/lubricants, alkalis and various acids, etc., with very good to good resistance. Please ask for our specifications or simply contact us stating the medium used.

Isoloc standard items are available from stock in Stuttgart.

The creep behavior of isoloc insulating panels varies depending on the panel type, but is very low due to new special materials. Ask for our data sheets!

No, as some of the isoloc vibration insulation panels are highly resistant to solvents, a special adhesive is required, which we also supply separately in 50 ml and 500 ml bottles.

A distinction must first be made here between the temperature resistance of the elastomer as such and the temperature dependency when used as a spring-damper system. The temperature resistance depends on the elastomer used and can be over 100°C until the elastomer is "destroyed". When used as a spring-damper system, the physical properties such as the deformation behavior under static and dynamic stress are more important. The dynamic properties (moduli) depend, among other things, on the temperature. The elastic and viscous contributions to deformation can vary depending on the deformation rate and temperature. The vibration insulation panels can be used up to a temperature of + 60°C, or + 80°C for special compounds (HT). The lower limit for lower temperatures is - 20°C. In the range from - 20° to - 40°C [glass transition temperature], the shear modulus increases steadily or abruptly!

No, the color change, especially with our yellow insulating panel IPL10 (turns brownish when exposed to sunlight), does not affect the functionality and service life of the insulating panel.

The leveling spindle should always point towards the outer edge of the machine. The thick vibration insulation plate of the UMS should always be on the floor. The machine base stands on the thin anti-slip plate.

Floor anchoring is recommended in the following cases:

• for heavily top-heavy machines (high eccentric center of gravity with a small footprint).
• for machines with high horizontal forces and a relatively low dead weight.
• for lathes on which highly unbalanced parts are machined.

Depending on the isoloc type used, uneven floors can be compensated for. This depends on the elasticity of the isoloc panel in question.

For floor slopes > 1° and for large, long machines with many installation points. Otherwise, uneven loads will occur on the machine shoes or on the machine.

The level difference of the contact surface at the installation point should be max. ± 0.1 mm over the length or width of the isoloc element used and should be max. 0.25 mm over 1 m. However, these values depend on the type of machine to be set up and the use of the insulation system.

The level difference of the contact surface at the installation point should be max. ± 0.1 mm over the length or width of the isoloc element used and should be max. 0.25 mm over 1 m. However, these values depend on the type of machine to be set up and the use of the insulation system.

No, it is sufficient to use one of the two holes in the UMS machine shoes.

In simplified terms, the tuning frequency is the natural frequency(s) of the vibration isolation elements under load with a mass m.

Shore hardness is only of secondary importance when assessing the properties of an elastomer spring. The dynamic properties, i.e. the dynamic natural frequencies (ƒ0v, ƒ0h) and the degree of damping (ϑv, ϑh), are decisive for assessing the "effect" of a vibration isolation plate.

IPL 6: 35 Shore (A)*
IPL10: 60 Shore (A)
IPL17: 70 Shore (A)
IPL20: 75 Shore (A)
IPL25: 75 Shore (A)
IPL30: 90 Shore (A)
IPL40: 70 Shore (A)

± 5°Shore

In the broadest sense, vibration foundation isolation refers to any vibration isolation that is not installed directly under the machine, but under the machine foundation (usually a concrete block). Such a machine foundation is usually sunk into the ground in a foundation trough.

1. the machine or system requires installation on a foundation for reinforcement. These can be, for example, measuring machines, printing machines or very long turning and drilling machines. For this reason, the elastic vibration isolation elements must be installed under the additional mass (usually a concrete block).

2. increase in weight due to additional mass and thus lower bearing natural frequency with the same number of vibration isolation elements due to the higher compressive stress.

3. to reduce the amplitudes of the vibration-isolated machine, including the foundation, if the natural frequency of the bearing remains the same.

4. reduction of the amplitudes (absolute movement) of the elastically mounted machine due to the larger inertial mass. Prerequisite: The overall stiffness of the vibration isolation remains constant despite the greater mass = more vibration isolation elements. The connected elements are subjected to less stress. Additional stiffening of the machine, lower inertial forces act on the machine components (longer service life).

Protection of a body, machine or system against external oscillations or shocks / vibrations. Formerly also known as passive vibration isolation.

Vibration insulation is structure-borne sound insulation.

Vibration isolation reduces the forces emanating from a machine (source isolation) or the vibrations caused by them. The residual forces (base point forces) should be smaller than the mass forces. Vibration isolation is also referred to as mass force compensation. The mass of the system to be protected must perform movements so that inertia forces occur which, in the undamped case, counteract the excitation forces so that the forces (source isolation) emanating from the system (machine) are reduced. However, the desired reductions can only be achieved if the natural isolation frequency of the system to be protected is significantly lower (> -fold) than the operating frequency of a machine, for example.

A shock or impulse is generally a broadband excitation. Shock isolation is used to reduce the forces emanating from a machine that are caused by shock excitation. Shock isolation is used when the transmission of high peak forces is reduced and converted into residual forces. As shock-like excitations are broadband excitations, forces or vibrations are amplified in the vicinity of the bearing's natural frequency. The magnitude of this amplification depends on the degree of damping.

PICTURE

The standard elements for vibration and structure-borne sound insulation of machines and systems are not effective for directly radiated airborne sound (noise), but structure-borne sound insulation reduces secondary radiated airborne sound on walls and other parts of the building by 3 - 7 dB (A) in some cases.

The installation of a machine tool is an essential design task, which is of considerable importance both for the functionality (accuracy, machining quality) of a machine and for the environmental behavior (vibrations).

First of all, it is important to use correctly matched vibration isolation elements for the actual vibration isolation.

The quality and accuracy of the leveling depends, among other things, on the type of machine, e.g. press or machine tool. Machine tools generally have to be leveled very precisely in order to be able to be operated with tool changing systems, for example, which are usually separate from the machine.

Uneven leveling can lead to tilting movements, which can then have a negative effect on vibration isolation.

Damping is energy dissipation (conversion of kinetic energy, e.g. into thermal energy). This means a rapid decay of free vibrations of a shock excitation (e.g. with presses etc.), faster decay of the amplitudes of an elastically mounted machine and, in the case of resonance, a reduction in the resonance peaks. These can occur, for example, when starting up or switching off a machine and in the event of shock excitation.

However, damping is not vibration isolation!