FAQ

We mainly supply elastomers on NBR basis in various shore hardness grades between 55 Shore and 90 Shore. Special shore hardness grades are available on request.

Depending on the type of application, the elastomer serves as non-slip protection, lightly dampening or dampening / isolating to a higher degree.

As machinery and equipment - depending on the make & kind - produce different types of vibrations, a range of shore hardness grades is neccessary in order to provide the respective optimum solution for each machinery installation scenario.

our precision wedge mounts are made of cast iron GG20, which, after completion of the casting process, are being milled clean and smooth on all inner contact surfaces as well as all sides facing outward

there are five basic versions available: wedge mounts free-standing (FS), wedge mounts bolt-on (BO), wedge mounts bolt-through (BT), wedge mounts bolt-on (BO) with spherical calotte for angle compensation and wedge mounts bolt-through (BT) with spherical calotte for angle compensation

these basic types are itself available in different sizes and fitted with different elastomer types, depending on the scope of application 

via the centrally positioned hexagonal adjustment screw, levelling of machinery and equipment installed on our wedge mounts is especially easy and user-friendly - in average, the adjustment range is ca. +/- 5 mm, starting from the '0'-position

in the product group of rubber-metal-elements, these basic shapes are available:

cylindrical with double outer thread ( type A )

cylindrical  with outer thread and inner thread ( type B )

cylindrical with double inner thread ( type C )

cylindrical with outer thread and contact surface ( type D )

cylindrical with inner thread and contact surface ( type E )

parabolic with outer thread and contact tip ( type DP )

cylindrical with outer thread and suction base ( type DS ) 

waist-shaped with double outer thread ( type AT ) 

waist-shaped with double inner thread ( type CT ) 

bolt-on, with fastening holes in the carrier plate ( type H1 )

conical with outer thread and contact surface ( type DK )

double carrier plate with triple hollow chamber, bolt-on ( type W )

double carrier plate with single hollow chamber, bolt-on ( type V )

metal plates on both sides, optional threaded holes ( type LBM )

due to the multitude of different machine types and customer-specific installation scenarios, in which - caused by uneven floors - an angle compensation between base plate and machine frame is required, we offer a large selection of suiting pendulum-action solutions such as pendulum ( version P ), pendulum with locking screw ( version PE ), pendulum with cap nut ( version PH ), pendulum with double hex ( version PHZ ), pendulum with bottom hex ( version PZ ) or non-pendulum ( version ST )

Basically, there is no difference in the technical function of the cast-iron levelling elements in regards to the geometrical shape. The different geometries, i.e. round, square or rectangular, are owed mainly to optical reasons and customer preference. Crucial is the connection between base plate and levelling screw, as well as the choice of dimension and type of elastomer for each respective machine or device to be installed.

The overview in the bwz Schwingungstechnik catalogue and the bwz Schwingungstechnik web site shows only a small selection of the actual available net thread lengths and thread sizes of the levelling elements series LBE. Due to our intrinsic manufacturing depth, individual net thread lengths are always possible, as well as other thread diameters. Please inquire accordingly.  

These levelling elements in version PH ( pendulum levelling screw with cap nut ) do not feature holes for floor-fixation. However, in combination with the suiting floor-fastening plates BFPK, potential horizontal machine movement can be arrested effectively. As an alternative, version BF PH is available, which features a twin elongated hole for ground-bolting.

Apart from the standard version of elastomer board with 70 Shore and grooved surface structure, on request we can supply all sizes of the polyamide levelling elements with our other common elastomer shore hardnesses, i.e. 55 Shore and 90 Shore.

The spheric pendulum ballhead embedded in the element base, with the upward facing inner thread for the levelling screw, has a pendulum angle of ca. 7,5 ° to each side, i.e. these machine alignment elements feature a total pendulum angle of 15 °, suiting to any kind of floor unevenness.

Our ready-to-use elastomeric formpieces made of medium-hardness nitrile rubber ( NBR ) are an easy option to install machines, devices and aggregates with minimum effort and minimum cost, without having to anchor into the device and / or the floor underneath. Three sizes and two versions cover a wide range of applications.

the version dubbed 'E' with the double crosspiece is designed for exact positioning at the corners of a device to be isolated, whereas the version 'H' with the single crosspiece allows for additional support underneath elongated machines and devices

These elastomer-based, pressure container clad isolators for low frequency mounting of machines and devices are available in two versions. First option is 'free-standing', which means that the base plate is equipped with a thin non-slip protection elastomer. The second option is 'bolt-on', where the base plates of the air-cushion vibration dampers FLN are bolted into the ground. In any case, a fixed connection between isolator and machine has to be established.

In case of the occurence of low systemic pressure, the suiting mounting plates ensure a full-faced coverage of the air-cushion vibration dampers against in-sinking of the machine foot. Should the mounting situation be such, that the machine frame by default provides for a full coverage of the vibration isolator, the application of the mounting plate may be waived. 

on request, other square or rectangular measures are possible as per customer demand and mounting situation