YDTech® manufacturer of curve cylindrical rollers with crowned(drum, barrel, correction line, repair) shape ends; supplier of loose needle rollers with crowned(drum, barrel, correction line, repair) shape ends in china.

crown needle rolles is meaning the roller ends had logarithmic curve correction line, in order to eliminate rollers stress.

cylindrical roller bearings and needle roller bearings, cylindrical and needle roller bearing surface technology programs generally use cylindrical surface, the bus is straight, with chamfered ends. Load, the edge effect of the action of rollers serious stress concentration at both ends, and the bearing raceway lubricant film can not be formed, a sharp peak stress the role and direct contact between metal and the material wear and fatigue spalling.

modification roller means to prevent the end of the roller and raceway contact stress concentration, its outer surface of the end of smuggling slightly amended roller.

with protruding major categories of the corresponding roller bearings cylindrical roller bearings and tapered roller bearings. dressing roller and the camber roller domestic roller bearings have been widely used, can improve the life of the product.

precision cylindrical rollers have multiple uses in a variety of industries including automotive, textile and electrical equipments. they are mainly used as bearing rolling elements to transmit torque and reduce friction.

we are manufactured precision rollers parts. including cylindrical rollers,spherical rollers, needle rollers, tapered rollers, cuspidal ends rolles, arc correction line rollers, logarithm profile rollers etc. we will provide you quality needle roller with competitive price and excellent service.