supply of spares for premium transmission pvt limited make bevel helical gear box , model b2-250rhb , spl , ratio 15 . 4 1 sr . no . hgf 56968 and h2-280rhb supply of spares for premium transmission pvt limited make bevel helical gear box , model b2-250rhb , spl , ratio 15 . 4 1 sr . no . hgf 56968 and h2-280rhb , item description , input pinion shaft , part no . 1a / b2-250 , bevel wheel , part no . 09 / b2-250 , 2nd stage pinion shaft , part no . 08 / b2-250 , 2nd stage wheel , part no . 16 / b2-250 , output shaft , part no . 15 / b2-250 , hold back , part no . 12 / b2-250 , fan , part no . 07 / b2-250 , 1st stage pinion , part no . 1b / h2-280 , 1st stage wheel , part no . 11 / h2-280 , 2nd stage pinion , part no . 10 / h2-280 , 2nd stage wheel , part no . 15 / h2-280 , output shaft , part no . 14 / h2-280 , hold back , part no . 08 / h2-280 , fan , part no . 06 / h2-280