Track rollers The track rollers which can sustain high radial loading is a kind of radial roller bearing with thick section of outer ring. The thick-section of outer ring can be considered as tyres to support the orbits or move on them. The mounting and dismantling of the cam rollers are equivalent convenient. Even if in some bad conditions it still can word for a long time .So it has wide application in mine, metallurgy, transportation, and hoist machinery. The PRS products series of the cam rollers consists of six series. There are series NUTR curve cam rollers with loose ribs, series NATV support cam rollers with loose ribs ,series NURK curve cam rollers with stud type , series RNA track roller ring .We can also develop and design special cam rollers according to customers’ requirement. We can fulfill the different requirements of the individuals