Elecon has developed special purpose custom built roll stand of size mw 355 j for hot sizing of seamless tubes and can develop in various sizes as per client’s requirement.
The toothed coupling, on left top, receives power and drives three rolls through trio of spiral bevel gears meshing to each other.
Tooth profile of spiral bevel gears is cyclopalloid, gears are made from high tensile steel en-40b as per bs:970 accurately generated and nitrided.
The shafts are at 120 ° to each other and supported in antifiction roller bearings of adequate size to take care of radial and axial loads permitting large degree of freedom against misalignment.
The rollers out of cast steel are proof machined before assembly and are finish machined on special purpose boring machine for given size of out side dia of tube when rollers are also rotated around their axes.
The roll stand gears bearings are grease lubricated resulting smooth and trouble free operation.
Technical specifications :
-type:mw 355 j
-power:57.6 kw [1100 danm at 50 rpm]
-roll speed:50 rpm
-roll pressure:20,000 kg. Max.
-weight:[without rollers] 465 kg.
