Harsh Environment Pulley ( 2 )

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                                                  Thermally matched shafts

  THERMALLY MATCHED SHAFTS TWO ENDS SUPPORTONE END SUPPORT
     Fig. 2 Thermally Matched Shafts   Fig. 3  A 2-end supported pulley     Fig 4  A cantilever supported pulley

          You may use stainless shaft to support harsh environment pulley submerged in corrosive bath at room temperature. However, as the bath temperature arises, stainless steel expands
2 - 3 times faster then the ceramics, ultimately ruin the ceramic bearing. Therefore we offer thermally matched alumina shafts factory-fit onto the harsh environment pulley of our produce(see Figure 2). These alumina shafts can be supported either at 2 ends or at one end (see Figure 3 and 4 respectively). The one end support is also known as a cantilever.

         The 2-end support offers a radial load capacity 2 times that of the cantilever, other parameters being equal. The recommended speed and load capacities of the ceramic bearings with alumina shaft are tabulated below. The distance between the support(s) has been arbitrarily chosen for reference.

                                

Non-sticking working surface                                                           NT 024 from a tin bath

          Ceramic pulleys without diamond polishing, when submerged in molten metallic baths suffer from metal adhesion, calling for frequent cleaning, adding to machine downtime. Our harsh environment pulleys feature a non-sticking, diamond polished surface, which eliminates metal adhesion. The photo at right was taken of a NT 024 - 6200 TZP high temperature pulley removed from a molten tin bath, showing no trace of tin adhesion.                                                                                                                                                     

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