Spiral roller surface is welded with right/left turn screw steel spring or covered right/left turn screw rubber ring. It is used to cleaning the things that adhesion to the belt.
Guanghuan (GH) promise 100% high quality rollers, we not only promise one year quality wanrranty, but also promise to replace the failed products free in case the failed rate over 5% percent in the second year.
Strictly controlled TIR, smoothly rotated, low noise, excelent dust-proof and water proof seal system, precision bearing house, bearing of choice, precision cold-drawn shaft. All above make GH rollers as your reliable choice. We never encourage client find cheaper product, we only recommend the product that suit you. We would choose different bearing for underground conveyor and overland conveyor. We would use different greast for hot wet invironment and cold dry invironment.