The integrated side flange on the housing permits the bearing to be installed directly on the nameplate. The surfaces of the housing are optimally finned for excellent, natural cooling characteristics. The EF type is especially suitable for electric machines which do not have their own bearing foundations or the alignment work that goes with them. However, the nameplates must be torsion-resistant and able to absorb the bearing loads. 

Significantly shorter bearing clearances, and therefore more rigid rotor constructions in comparison to pedestal bearings. Self-adjusting, floating labyrinth seals are standard fitted to seal the shafts on the concealed side of the machine. 

We recommend using chamber seals in cases where there is an increased circulation of lubricant, or due to unique specifications. Access through the interior of the machine must be provided for to enable assemble and adjustment of these seals. Thanks to the numerous advantages it offers, the EF type is the most popular design for electrical machines. Side flange-mounted bearings of the type EF are less suitable for machines with sensitive rotordynamic characteristics and/or rotors with supercritical speeds. In this case, the ER, EG, and EM housing versions offer more advantageous conditions.

Features

• Lower noise levels in comparison to rolling bearings and resistant to loads caused by shocks thanks to low material stresses

• Maintenance-free or low-maintenance and easy to install

• Lubricant film dampens vibrations, impacts, and noise

• Resistant to penetration of dust and shocks

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

• Slide bearings are suitable for very high speeds

• Slide bearings exhibit practically no wear during fully hydrodynamic continuous operation and with hydrostatic bearings

• Slide bearings are most cost-effective than rolling bearings at large dimensions

Technical Data

• Design: EF bearing

• Construction: Finned side flange-mounted bearing acc. to DIN 31693 / ISO 11687-2

• Size: 9 … 28, for shafts ? 80 … 355 mm

  35 … 45, for shafts ? 300 … 560 mm (600 mm)

• Lubrication: Self-lubricating (loose oil ring, fixed oil ring) or external lubrication

• Cooling system: Natural cooling, water cooling, or external cooling

• Bore design: Various bore designs as required, e.g. cylindrical bore, two-lobe bore, four-lobe bore, or radial tilting pad

• Options: Electric insulation, lubrication circulation system, hydrostatic jacking

• Accessories: Temperature monitoring with PT100, prepped for vibration/speed sensors

We can provide original German RENK gearboxes, couplings, sliding bearings, RENK bearings, oil seals, oil rings, and other accessories, so no matter what brand of motor the customer uses (including but not limited to: TECO Motor , ABB motors, Siemens motors, WEG motors, Marathon motors), as long as they are equipped with RENK products, we can provide related RENK product services.

Our Advantages:

1.    100% regular goods channel. 

2.    100% matched with original motors. As a high-voltage motor distributor over 10 years, we can make sure RENK bearings, RENK bearing bushes can match with original motors completely and correctly.

3.    We also provide other services like maintenance and replacement of components to make your work more efficient and easier.