procurement of rubber liner with hardware , dynamic impact pad and cushioned rollers . as per nit , procurement of rubber liner with hardware , dynamic impact pad and cushioned rollers . , dynamic impact pad , 75 mm having suitable dimension for 1600 mm wide belt conveyor , length: 1300 mm long along with fastener and ms support structures . the impact pad should have layer of suitable thickness of polymer and rubber . the bottom part should be provided with aluminium reinforcement moulded with rubber for fastening pad with structure . dynamic impact pad with cradle frame . 01 set consisting of 14 nos . pads , rubber liner of thickness 40 mm , size: 500 mmx 1000 mm , shore hardness in degrees a= 70 , tensile strength =220 kg/sq cm , elongation at break % =550 , specific gravity =1 . 19 , din abrasion loss = 99 cu . mm , along with hardware . hardware shall be in sets . for every 0 . 5 sq . mtr of rubber liner , one set of hardware is required . each set consisting of 08 nos . nuts and bolts , bolts should be ht bolts and nuts should be nylock steel nuts and washers must be of mild steel . ( 500 mm x1000 mm = 0 . 5 sq . mtr of rubber liner requires one set of hardware , hence 50 sq mtr rubber liner must consist of 100 sets of hardware ) , cushioned roller ( impact idlers ) for 1200 mm wide belt conveyors , heavy duty roller bearing should be zz , type: covering size of bearing: 6205-zz , cushioned length above the roller= 500 mm consisting of 12 nos . segments ( rings ) , shore hardness in degrees a-70 , cushioned roller ( impact idlers ) for 1600 mm wide belt conveyors , heavy duty roller bearing should be zz , type: cover size of bearing: 6207-zz , cushioned length above the roller= 500 mm consisting of 16 nos . segments ( rings ) , shore hardness in degrees a-70