Elastic bearing
for compressors
Effective vibration isolation withGetzner Isotop®

The exceptional vibration-isolating effectof Getzner products is based on the uniqueproperties of the polyurethane materials
Sylomer®, Sylodyn® and Sylodamp®. Thesematerials also form the core of the Isotop®
range of effective solutions for compressor
bearings.

Keybenefits— Measurable reduction invibrations in the audible
frequency range and thus
reduction in secondary airborne noise— Devices can be installed even indifficult locations (e.g. roofs and walls)— Easy and convenient installation— Long service life and maintenance-freeApplication
Compressors are used in various systems such as heatpumps, air conditioning units or refrigeration systems.
No matter what the compressor – reciprocating, screwor scroll – vibrations are mainly caused by the refrigerant compression process. These vibrations are often perceived in the adjacent living or working areas as a deep
‘hum’ and are therefore seen as unpleasant. Tricky installation sites, such as rooftops or wall mounts, make itharder for the bearings to exert their full isolating effect.

Freuency-controlled compressors are also challenging forvibration decoupling, as they also operate in the low-frequency partial load range and thus come close to thenatural frequencies of rubber-metal bearings. With conventional bearings, this leads to a reduction in isolation
performance and even to an increase in vibrations in theresonance range.
The correct choice of bearings is therefore crucial fora good result and prevents unnecessary alterations orretrofitting.

Bearing concepts
There are two established concepts for elastic bearing
compressors in refrigeration systems or heat pumps:
Concept 1 – Direct bearing of the compressor

Concept 2 – Bearing with additional baseplate

The additional baseplate offers the advantage that bearings can be optimally selected, i.e. so they are closer tomaximum capacity and therefore have a lower naturalfrequency. This is particularly advantageous for lighter
scroll compressors in heat pumps or air handling units.

An additional baseplate pad can reduce the mechanicalloads on the refrigerant supply lines when several components are mounted on the same platform.

Products
The following compressor bearings from the Isotop® range
have proven highly effective in various situations:

Isotop® MSN— Low natural frequency from 3.5 Hz— Low overall height of 57 mm— Excellent corrosion protection – galvanised orwith CDC coating— Secure connection thanks to special bonding

Isotop® DMSN
— Sylodamp® inside – for more stability— Low overall height of 57 mm— Excellent corrosion protection thanks to CDC coating— Secure connection thanks to special bonding

Isotop® DZE Mini
— Sylodyn® and Sylodamp® inside— Resistant to compression and tension— Reduces high amplitudes— Designed for horizontal forces (e.g. high wind loads)— Stainless steel housing and continuous stainless steel
piping for ultimate corrosion protection— Rapid installation thanks to pre-assembled elements

Isotop® MSN-DAMP— 37.5 mm Sylomer® inside— Excellent corrosion protection thanks to CDC coating— Easy installation thanks to various attaching options— Secure connection thanks to special bonding

Isotop® Compact— Sylomer® or Sylodyn® inside— Ultra-low overall height of 30 mm— Easy installation thanks to various attaching options— Secure connection thanks to special bondingYou can obtain measurement reports and further informationfrom your Getzner contact or at getzner.com.

OP Compressors en © Copyright by Getzner Werkstoffe GmbH | 10-2020

Want to find out more about the best solution for your machine?
The EquipCalc selection tool makes it easy to choose the right productfor you: www.getzner.com/equipcalc

AUSTRIA — Bürs GERMANY — Berlin — Munich — Stuttgart FRANCE — Lyon JORDAN — Amman JAPAN — Tokyo
INDIA — Pune CHINA — Beijing USA — Charlotte AUSTRALIA — Melbourne
www.getzner.com