Sealmaster Mounted Roller Bearings - SealMaster - #49

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142 APPLICATIONS... GOLD LINE SOLUTIONS FOR MIXERS APPLICATIONS. Misalignment: The SEALMASTER misalignment capabilities, ±2° on ball and ±3° on roller bearings overcome static alignment problem associated with the extended cantilever set up found in mixers. Thrust Loading: Bearing Load Capability... SEALMASTER RPB tapered roller bearings are the recommended bearing choice for mixers because of their increased ability to perform heavy combined radial and thrust loading. Although, high speed applications may require the use of mounted ball bearings. Locking Mechanism... Double sided set screw shaft locking, available standard on roller and medium duty ball bearings, uses four set screws to hold the bearing to the shaft and is recommended for these applications. System Imbalance: Wide Inner and Outer Race... This feature distributes the dynamic misalignment forces over a large surface area between the bearing insert/cartridge and housing. This also provides a greater internal chamber volume that allows for increased grease capacity. Locking Pin... The locking pin design significantly lessens the likelihood of outer ring rotation that could compromise the integrity of the lubrication system. Housing Fits... SEALMASTER provides increased useful bearing life by incorporating a custom fit between the bearing insert/cartridge and the housing to minimize corrosive fretting, and accomodate dynamic misalignment. Internal Clearances... In SEALMASTER RPB Roller Bearings the optional, reduced clearance modification diminishes edge loading from dynamic shaft misalignment caused by bending of the shaft and the overhung load due to viscous or heavy media. Contamination: Seals... In wet or slurry applications the SEALMASTER contact seal with protective flingers is suggested. Seal materials may need to be considered if media being mixed contains any aggressive chemicals. Non-purgable spring loaded "V" seals (oil seals) can be utilized for grease retention on ball bearings in these vertical applications. Lubrication... Lubrication frequency may need to be increased to ensure adequate lubrication is maintained. Optional food grade greases are available where required. Industrial mixers are designed to combine materials in industries such as paint, ink, film, chemicals and food products. Mixers benefit from the standard Gold platform as well as special bearing modifications that address the demanding application dynamics. Thrust loads are present due to the shaft weight, the mixing wheel, and the media being mixed. Often, mixers have a vertical shaft orientation. The bearings typically have close center distances and an extended shaft cantilevered into a mixing drum. The blade is positioned at the end of the mixing shaft to blend media. Shaft deflection results in dynamic loading on the bearing which causes dynamic misalignment. Often bearings must be protected from liquid splash or dry media debris. Key Concerns... include misalignment, thrust, system imbalance, loss of shaft lock, and liquid, dry, and chemical contamination. MIXERS... Contact application engineering with your application parameters for exact bearing selection (630-898-9620).