bids are invited for sprocket with hub for girland raising/lowering of h/uh m/c in rs-1, type: simplex iso 12b, no of teeth : 24, pitch 3/4 total width including hub: 44mm, with pilot bore of 20mm hub od: 90mm teeth duly flame hardened upto 300-350 bhn. , drive sprocket for rod handling system of thimble press in rodding shop-i size: 1pitch x 19 teeth, duplex, finished bore: 50mm with keyway as per drawing no.rsi/mech/spr/a1/10836,sh-7/8, item no.16 , driven sprocket for rod handling system of thimble press in rodding shop-i size: 1pitch x 19 teeth, duplex, finished bore: 70mm with keyway as per drawing no. rsi/mech/spr/a1/10836,sh-7/8, item no.15. note: bearings shown in the drawing is not in scope of supply of vendor. , 1pitch duplex bss/din 8187 chain(iso chain no.16b-2) confirming to bs 228/din 8187 to be supplied in minimum length of 5 meters with one connecting link for each length. , connecting link with spring fastner size : 1 for simplex roller chain as per iso 16b-1/bs228/din 8187 std total quantity : 2111