purchase of Transmission Gear

Amount

Cast steel spur gear confirming to IS:2708, Grade III-B, whereas pinion should be EN-24. Hardness of pinion & gear 250 and 220 BHN respectively. Spur gear should be designed to transmit 700 H.P continuously at mill roller surface speed of 12mtr./minute under shock load condition and shall confirm to IS:4460-1967. The low speed reduction gearing unit shall have machine cut teeth by gear generating process in both cases as per following specifications & drawing No. CE/220/001 CAST STEEL SPUR GEAR Material IS:2708, grade III-B No of teeth = 125 Module = 25 Face Width = 450 PCD = 3125 OD = 3175 Root circle dia = 3062.5 Tooth thickness on PCD = 39.25 Center distance = 1887.5 Clearance = 3.9285 Circular pitch = 78.57 Pressure angle = 20° Total teeth depth = 56.25 Keyway (parallel type, 2 no.) = 70x20 Bore = 350 H7

Supply of EN-24 Pinion: No. of teeth = 26 Module = 25 Face width = 450 PCD = 650 OD = 700 Circular pitch = 78.5 Root circle dia = 587.5 Tooth thickness on PCD = 39.25 Pressure angle = 20° Key way(parallel type 02 No.) at 900 size 70x18 Bore = Ø320.5 Second intermediate pinion shaft (part No. 302) (3rd motion) suitable for Elecon make SCN-250, reduction gearbox, ratio 40:1, (Teeth-16) as for secondary cane carrier’s gearbox.