Active local mining machinery, engineering machinery, mostly mountains and desert from human normal life mining site, sometimes even work on 2000 meters underground. Such mechanical sort is various, from the mineral crushing machinery to the cutting machine, screening machine, loading machinery, transportation machinery, etc., are all 24 hours per day continuous operation of the equipment. Either of these mechanical machinery fault happens, would give the scene of the mining production caused great influence, and, due to the recent large-scale machinery, also make maintenance work very hard.

Therefore, in terms of bearing the use of the environment, "heavy load and impact load", "light load and high speed rotation" and "heavy load and low speed rotation" for bearing a lot of very harsh conditions. Bearing of the user's desire is, therefore, have to withstand the sturdiness and durability of the bad working condition and high reliability products.

To meet the requirements of users, for a long time, will own the core technology namely materials, lubrication technology, analytical technology and the integration of the most advanced bearing design technology, is committed to research and development. As a result, achieved can provide substantially beyond the past bearing "long life and high limit speed" target level of products, improve mining field under harsh conditions for the customer the production efficiency and reduce maintenance cost. In addition, NSK offers corresponding environmental protection requirements, a new solution.