Better Bearings for Vibratory Applications
Off-highway operators are looking for increased speed, reliability and productivity.
In turn, OEMs are striving to meet that need with solutions that deliver more power, the ability to handle greater eccentric loads in the machine drums, and the reduction of power loss/heat generation across entire system. Central to the development of such solutions are robust bearings that can handle the high vibration levels.
Applications such as road rollers or vibrating screens are challenging for rolling bearings, as the direction of load is alternating, inducing very high forces on thecage. Bearings designed for general machinery often fail in these applications due to cage fracture or operate with high friction due to improper guidance of the rollers.
SKF Explorer spherical roller bearings for vibratory applications (identified by suffixes VA405 / VA406) are specifically engineered for rugged vibratory applications. They are manufactured with surface-hardened cages and guide rings, optimized internal clearance and tolerances. And to improve performance for end-users still further, SKF has recently upgraded the SKF Explorer performance class with a unique heat treatment, offering improved wear and contamination resistance.
The bearings provide a powerful solution in tough applications such as vibrating screens and road rollers, especially compared to alternative bearings without guide ring. The purpose of the guide ring is to guides the rollers, so that they enter the loaded zone with a minimum of skew, reducing friction and heat generation to a minimum..
“SKF Explorer spherical roller bearings for vibratory applications offers number of features, such as tailored tolerances and hardened cages that provide outstanding performance in vibratory applications,” says Johan Ander, Product Management SelfAligning Bearings. “The upgraded SKF Explorer performance class with higher wear resistance deliver additional benefits with increased bearing service life in heavily contaminated environments, which is often the case in off-highway equipment.”