refurbishment of elecon make gearbox sbn 400 and transmission pinion , refurbishment of elecon make gear box sbn 400 , refurbishment of elecon make gearbox sbn 400 scope of work: (i)manufacturing, supply and replacement of 1st intermediate pinion with new one. (ii) reversing of output wheel. (iii) assembly and trial run. (iv) new pinion should match with the existing gear wheel metallurgy of pinion : en 353/22mncr5 (v) given successful trail & testing with one crushing season. , 2. supply of transmission pinion (as per sample) od : 936 mm, no. of teeth : 37 bore : 330 mm matl is 2708 gr3 hardness 201 to 255 bhn mechanical properties: tensile 690 nmm minimum yields stress 495minimum elongation 13% minimum