Bearings

Sleeve Bearings

Self-aligning spherical-seat bearings are used on machines requiring the capability and performance of sleeve bearings. They employ construction features and sealing systems designed to keep the oil in and the dirt out. With seal additions the motor can conform to the IP-55 (dust & water jet) standard. The babbit-lined bearing shell is supported by a rugged housing and employs an oil ring that carries the oil from the reservoir up to the bearing. The opposite drive end bearing is insulated to minimize damaging shaft currents. Sight holes and split construction allow easy inspection and replacement without uncoupling the driven load.

Anti-Friction Bearings

Ball or roller type bearings on horizontal machines are selected based on customer requirements. They are regreasable and operate smoothly providing long life with low running bearing noise. They are also assembled with grease in a sealed housing to avoid contamination. The lubrication system includes a well sized relief plug to allow the purging of excess or old grease during relubrication. External, labyrinth seals can be added to horizontal machines to provide IP-56 (Dust exclusion) protection capability.

Vertical Thrust Bearings

Thrust bearings such as angular contact ball (anti-friction), spherical roller (anti-friction) and sleeve tilting pad (hydrodynamic plate bearing) are designed to meet the requirements of load capacity, lifetime and maintenance. Compliance with the API 541 design life and procedure is also available. Regardless their type, thrust bearings are always lubricated by an oil bath. Depending on the speed, lubricating oil, bearing size and type and environmental conditions, bearings are self cooled or water cooled by a coiled heat exchanger placed inside the housing. The picture shows a cut view exemplifying a spherical roller and contact angular type bearings construction.

Stator