We can call it Track roller bearing, V Groove Wheel bearing, V Groove roller bearing, V Groove bearing. Load Runners, idler rollers, rail bearing, load rails Track rollers with Gothic arch groove - type LFR Series LFR rollers are the most widely-use and economy product among the linear motion track rollers, and they can suit to the cylindrical track.
V Groove Bearing Description:
Series V Groove roller bearings are the most widely-use and economy product among the linear motion track rollers, and they can suit to the cylindrical track.