| CONTENT |
POLYSTEEL® ROLLERS |
STEEL-MS ROLLERS |
| WEIGHT |
25-30% lighter than steel-MS rollers |
Heavy as compared to polymer rollers |
| POWER SAVING |
Start up torque is 25-30% lower than conventional steel rollers and ampere loads is also less due to lighter in weight. |
Steel rollers are heavier, requiring higher start-up torque & consume more power & ampere load. |
| STRUCTURE FRAMES |
Polymer frames have been introduced with sturdy design & even lighter sections could be used. |
Requires heavy fabrication with heavy duty section to withstand self dead weight of rollers & increase costs. |
| CORROSION |
Resistance to corrosion & required zero to low maintenance as no repeat surface coating is
required & hence reduces down time cost. |
Corrosion not available-higher down time costs towards repeat maintenance descating & epoxy painting. |
SCALING ON
ROLLER SURFACE |
Being a Polymer material from a non polar group it does not allow to stick any foreign particles to accommodate on its surface & hence is no peeling
of surface & helps to increase life of a belt. |
Due to oxidation on its surface material tends to stick on its surface unevenly causing belt off centering & damage the belt, requires frequent cleaning & scaling of roller will have peeling effect & hence damage the belt. |
| MAGNETICS |
These are non-magnetic & light in weight suited
for belt magnetic seperators & belt weighing scale. |
Steel MS rollers are magnetic hence non magnetic rollers has to be manufactured from SS which again becomes very expensive. |
CO-EFFICIENT OF
FRICTION |
As it has very negligible rolling resistance & its dynamic co-efficient of friction compared with rubber is very low as 0.15 |
The DYNAMIC co-efficient of friction compared with MS to rubber is 0.5 & rubber to rubber is 1.1 which causes much frictional loss & leads to heavier torque as well as ampere loads. |
| ROLLER SHAFT |
The shaft rollers are of GLass fiber & epoxy resin material which are low in weight & resistant to chemical attack & its hardness is almost tough & nearby equivalent to steel. |
Material is either Carbon steel / EN8 grade higher in weight & will oxidate if in contact with moisture. |
TEMPERATURE
RESISTANCE |
POLYSTEEL Rollers are restricted to temperature to a max. 70-80Deg. For a safer side we recommend this temp limit wheras it can withstand temp up to max. of 100Deg. |
Steel-MS rollers can withstand temp higher up to 200Deg.C and are in application for all grades of conveyor belting this is the only major advantage it has. |
| BEARING HOUSING |
It is lighter in weight sturdy, anticorrosive & made of polymer. |
This is made from CRCA sheet, max. chance of getting corroded & its heavy in construction. |
