Ask Prof. Grabriel Lodewijks. He should have a well equipped library.

Rise Louise made a plastic roller, African Roller (sic) of South Africa make one - I believe they were purchased by anothers. Other mfgrss have made experiments and may market them.

Google:

Prok Australia

Tytton Australia

Melco Southe Africa

Lorbrand South Africa

Continental Conveyor USA

Precision Pulley USA

FMC USA

Hewitt Robins USA

........

Advantages:

1. noise

2. more accurate shell TIR without machining = higher speed

3. no corrosion except in bearings = use ceramic bearings ■

Dear Mr sandjay

In addition to advantages indicated by Mr Nordell the main advantage in case of pipe conveyor will be reduction in belt sdgr damage.

In case of pipe conveyors Belt Edge damage due to strucking of belt at matalic edge of roller pipe is observed. In case of plastic rollers with round edge belt edge damage can be minimised

A R SINGH ■

Dear Sandjay

we have made plastic rollers with inbuilt housing . These rollers are working withiut any problem

A R SINGH ■

Dear Mr. A. R. Singh,

Where you have installed in INDIA conveyor with palstic idler having 5 m/see belt. speed ?

Please give me ref.

Regards.

A.Banerjee ■

Dear Mr. Kalidien,

I have not seen any conveyor with plastic idler in any steel/ power plant. Once I have seen in a model conveyor having plastic idlers.

Regards.

A.Banerjee ■

We have used plastic iders many times on conveyors subject washdown for cleanliness.

In any materials handling machine a competent designer will select the components according to application ■

Dear banarjee

we have used nylon rollers for %)) m long @%) tph pipe conveyor at sterlite industries tuticorin for transportation of copper concentrate

a r singh ■

DEAR BANARJEE

WE HAVE USED NYLON ROLLERS FOR 500 M LONG 250 TPH capacity PIPE CONVEYOR AT STERLITE INDUSTRIES TUTICORIN FOR TRANSPORTATION OF COPPER CONCENTRATE

A R SINGH ■

Originally Posted by arsingh

DEAR BANARJEE

WE HAVE USED NYLON ROLLERS FOR 500 M LONG 250 TPH capacity PIPE CONVEYOR AT STERLITE INDUSTRIES TUTICORIN FOR TRANSPORTATION OF COPPER CONCENTRATE

A R SINGH

Dear Mr.Singh,

I am fearing that the Nylon rollers may catch fire if they failed to rotate because of any reason ( Bearing failure , Material struck up between brackets and rollers , Poor house keeping etc., ). This may lead to fire accident.

I may be right or wrong. Though polymer rollers have many advantages over Mild Steel Rollers , I am hesitant for using polymer rollers.

Experts are requested to comment on this.

Thanks & Regards, ■

We use PVC rollers in our operation underground and the material will not sustain a flame.

They will burn if there is a flame on them from another source but remove that flame and they will extinguish on there own. Therefore the rollers themselves cannot cause a fire. ■

In addition, we have to consider the belt width and the capacity since longer roller will have higher deflection in pipe. But it can be minimized by adding reinforcement inside the pipe.

Regards,

Endri ■

Dear A R Singh Sir,

Is there any advantage in pastic idler against metalic by manufacturing process as well as cost ?

Regards,

Nainesh A Patel. ■