What Rollers Are Used in Long Distance Belt Conveyors?

For long-distance belt conveyors (especially over 100m, mine, port, bulk material handling), these are the most widely used rollers:

1. Standard Troughing Idlers / Carrying Rollers

3‑roll or 5‑roll troughing set

Support the loaded belt

Most common roller on the carrying side

2. Return Rollers

Support the empty return belt

Usually single straight rollers

3. Impact Rollers

At loading / feeding points

With rubber rings to absorb impact

Protect belt and rollers

4. Self‑Aligning / Training Rollers

Prevent belt misalignment over long runs

Automatically correct belt wandering

5. Transition Rollers

At conveyor head/tail

Smoothly change belt from flat to trough shape

6. Special Long‑Life Rollers

HDPE / plastic shell rollers – lightweight, low noise, corrosion‑resistant

Steel rollers with labyrinth seals – dustproof & waterproof

Ceramic‑coated rollers – ultra wear‑resistant for harsh conditions

GB/T 7714：

Guo Y C,Cheng G,Hu K,Wang Z F.Research on the idler spacing of belt conveyor[J].Applied Mechanics and Materials,2011,127:295–299.DOI:10.4028/www.scientific.net/AMM.127.295.

APA：

Guo,Y.C.,Cheng,G.,Hu,K.,&Wang,Z.F.(2011).Research on the idler spacing of belt conveyor.Applied Mechanics and Materials,127,295–299.https://doi.org/10.4028/www.scientific.net/AMM.127.295

MLA：

Guo,Yong Cun,et al.“Research on the Idler Spacing of Belt Conveyor.”Applied Mechanics and Materials,vol.127,2011,pp.295–299,doi:10.4028/www.scientific.net/AMM.127.295