SNA Series Horizontally Split Plummer Blocks (bearing Housings)are Completely Interchangeable With Earlier SN Type Plummer Block,concerning Mainly To Its Centre Height,foundation Bolt Centres.Same Bearing Housings Can Be Used For 500 And 600 Series Bearings Having Equal Bearings Outside Diameter By Changing Its Shaft Seals,e.g.SNA 506 Plummer Blocks Can Be Used As SNA 605 Also Where Bearing O.D.of 1206K And 1305K Are Equal E.g.52mm.Similarly Same Plummer Blocks Can Be Used For Bearing With Tapered Bore Mounted With Adapter Sleeve Or Bearing With (straight)cylindrical Bore.However Such Plummer Blocks Are Designated As SNA 500 And SNA 600 For Bearing With Adapter Sleeves And SNA 200 & SNA 300 For Bearings With Cylindrical Bores.Bearing Seating Width Provides Axial Freedom Which Can Be Made Axially Located By Insertion Of Suitable Locating Rings.
Helical Gear Boxes
