EM type – finned middle flange bearing

EM type slide bearing product introductionWe developed the EM bearing type to meet the need for extremely small bearing clearances with a simultaneously high level of structural strength of the assemb

  • Brand :: RENK
  • Type:: EMNLB/EMZLB/EMZLQ/EMNLQ

EM type slide bearing product introduction

We developed the EM bearing type to meet the need for extremely small bearing clearances with a simultaneously high level of structural strength of the assembly unit, consisting of the nameplate and bearing. The mounting flange is located in the axial center of the housing and therefore enables the direct, vertical application of loads into the nameplate. The bearing housing is connected via the lower section of the housing. This means that the nameplates can also be split, and only the lower half needs to exhibit a high degree of rigidity. Very large access areas to the interior of the machine and the bearings can be provided for installation purposes – an extraordinary advantage when assembling the machine and performing maintenance work. This housing shape serves as a very suitable basis for a wide range of expansion stages in demanding drive concepts in particular. You could say that the EM type is a functional, multi-purpose bearing – for durable, low-speed machines up to turbo generators running at maximum speeds. The centrally flange-mounted bearings designed with an enlarged housing surface (ZM7, EM9S, EM14S/XS) are a special type of bearings for smaller shaft diameters. In cases where products exhibit a low degree of variation, these bearings offer optimized functionalities for operation with natural cooling, which means that two-pole electrical machines, for example, can be built without separate lubricating units.

EM type slide bearing product features

  1. Slide bearings have lower noise levels in comparison to rolling bearings and are resistant to loads caused by shocks thanks to lower material stresses

  2. Slide bearings are maintenance-free or low-maintenance and easy to install

  3. Slide bearings have a lubricant film that dampens vibrations, impacts, and noise

  4. Slide bearings are resistant to dust penetration and shocks

  5. Slide bearings require a small radial installation space and are structurally adaptable (can be integrated as component)

  6. Slide bearings are suitable for very high speeds

  7. Slide bearings exhibit practically no wear during fully hydrody

EM type slide bearing product technical data

Design

EM bearing 

ConstructionFinned middle flange bearing acc. to DIN 31694 / ISO 11687-3
Size9 … 28, for shafts Ø 80 … 355 mm
35 … 45, for shafts Ø 300 … 560 mm (600 mm, without axial component)
LubricationSelf-lubricating (loose oil ring, fixed oil ring) or external lubrication
Cooling system

Natural cooling, water cooling, or external cooling

Bore designVarious bore designs as required, e.g. cylindrical bore, two-lobe bore, three-lobe bore, four-lobe bore, or radial tilting pad
OptionsElectric insulation, lubrication circulation system, hydrostatic jacking
Accessories

Temperature monitoring with PT100, prepped for vibration/speed sensors


Common models of EM types slide bearing

SIZEEM Series
natural coolingexternal oil cooling
9EMNLB 9-80EMZLB 09-080
EMNLB 09S-80EMZLB 9S-100
EMNLB 09S-080EMZLQ 9-80 
EMNLB 9S-080EMZLQ 09-080
EMNLB 9-90
EMNLQ 9-80
EMNLQ 09-80
11EMNLB 11-110EMZLB 11-110
EMNLB 11-125EMZLB 11-125
EMNLQ 11-110EMZLQ 11-110
EMNLQ 11-125EMZLQ 11-125


14EMNLB  14-125EMZLB  14-125
EMNLB  14-140EMZLB  14-140
EMNLQ  14-125EMZLQ  14-125
EMNLQ  14-140EMZLQ  14-140
18EMNLB 18-160EMZLB 18-160
EMNLB 18-180EMZLB 18-180
EMNLB 18-200EMZLB 18-200
EMNLQ 18-160EMZLQ 18-160
EMNLQ 18-180EMZLQ 18-180
EMNLQ 18-200EMNLQ 18-200
22EMNLB 22-200EMZLB 22-200
EMNLB 22-225EMZLB 22-225
EMNLB 22-250EMZLB 22-250
EMNLB 22-280EMZLB 22-280
EMNLB 22-300EMZLB 22-300
EMNLQ 22-200EMNLQ 22-200
EMNLQ 22-225EMNLQ 22-225
EMNLQ 22-250EMNLQ 22-250
EMNLQ 22-280EMNLQ 22-280
EMNLQ 22-300EMNLQ 22-300
28EMNLB 28-250EMZLB 28-250
EMNLB 28-280EMZLB 28-280
EMNLB 28-300EMZLB 28-300
EMNLB 28-315EMZLB 28-315
EMNLB 28-335EMZLB 28-335
EMNLB 28-355EMZLB 28-355
EMNLQ 28-250EMNLQ 28-250
EMNLQ 28-280EMNLQ 28-280
EMNLQ 28-300EMNLQ 28-300
EMNLQ 28-315EMNLQ 28-315
EMNLQ 28-335EMNLQ 28-335
EMNLQ 28-355EMNLQ 28-355