Is this relavant to a conveyor roller ■

The IP Index may have to be quoted as some newer roll/ers have to be classified due to the electrostatic content of their manufacture materials and also if they are fitted with RFID monitoring tags and equipment. This is relatively new adaptions for monitoring purposes. I have new patented rolls that I may have to have rated as each roll end will have an RFID tag for scan monitoring throughout the conveyor length.

http://www.tamecservices.com.au ■

Dear Endri,

I am not familiar with idler roller IP. I am familiar with IJPI (Idler Junction Pressure Index).

This is a criteria that must not be exceeded, otherwise there are a number of consequences that may ocurr:

1. Steel Cord Construction - rubber may delaminate from steel cord surface where idler junction stress causes fatigue and failure of rubber in wing to center roll zone

2. Stress on center roll rubber botttom cover that may cause divots on rubber beneath the steel cords near point of maximum stress between cords and belt in contact with idler rollers.

3. Delamination of belt bottom cover from core gum due to differential wear of bottom cover at high contract stresses. Bottom cover too thin. Center and wing roll diameters are too small and over stress contact zone as above.

4. Idler spacing too wide for rubber bottom cover, idler roller diameter, idler trough angle causes excessive stress in junction zone.

5. Vertical and horizontal curves are too small or apply excessive stress on bottom cover at idler junction.

6. Idler transition is too small at either head or tail stations.

7. Loading zone with high tonnage pressure at skirt zone specifically at IJP zone.

8. THe above also relate to the belt speed and whether bottom cover has a fabric reinforcement.

These all relate to IJPI. I do not know what IP means. ■

This classification system utilizes the letters "IP" ("Ingress Protection") followed by two or three digits. ■