refurbishment szn-450 closed reduction gear box refurbishment szn-450 closed reduction gear box , refurbishment szn-450 closed reduction gear box , design, manufacturing and fitting of internals with bearing in our existing old closed reduction gear boxbody havingfollowing specification:- details of eaisting closed reduction gear box make- m / s flender drives ltd. model- szn-450 reduction ratio- 1000:100.34 bhp- 600, sl n- 10006, year of manufactring-1983 work order no-82-2018 , ( a ) input pinion shaft – double extended ( i ) . no of teeth-15, od-180mm, face width- 118mm. ( ii ) bearing no 22322 rhw33c3- 1 nos ( iii ) bearing no-nj2322 fy-01 no , ( b ) inter mediate pinion shaft & gear wheel- pinion- no of teeth-15, od-252mm, face width-195mm, gear no of teeth-46, od-495mm, face width-110mm, bearing- nj-2326fy ( either ends ) -02 nos , ( c ) output gear shaft & gear – no of teeth – 46, od-700mmface width- 180mm, bearing ncf3044v ( either ends ) -02 nos , ( d ) centre distance between input pinion shaft&output shaft- 770mm , note- old existing casing / body is to be used for fitting of new internals. the reduction ratio is to be maintained indentical to our existing gear ratio.