2026-07-16
NMT Ltd.
Corporate Communications Department
NMT Spherical Roller Bearings: High Temperature Thermal Stability, Resist Thermal Deformation for Metallurgy and Forging Equipment
Metallurgical furnaces, forging presses, hot rolling mills and other metal processing equipment operate in high-temperature radiation environments for a long time. The surface temperature of equipment bearings often exceeds 120℃, and the instantaneous temperature of local working positions is even higher. Ordinary spherical roller bearings are limited by common materials and simple structural design. Under long-term high-temperature heat radiation, metal thermal expansion is uneven, which is prone to thermal deformation, raceway distortion and roller jamming. High temperature will also accelerate the aging and volatilization of lubricating grease, resulting in dry friction, sharp increase in bearing temperature, rapid wear and early fatigue failure. These problems lead to frequent shutdown and replacement of bearings in high-temperature industrial equipment, seriously restricting production efficiency and increasing enterprise operating costs.
Focusing on the high-temperature operation pain points of metallurgy and forging industries, NMT Japan has upgraded the core materials and thermal structure of spherical roller bearings in an all-round way. The product adopts special high-temperature tempered bearing steel after multiple precision heat treatment processes, which has ultra-high thermal stability and structural rigidity. It will not produce uneven thermal expansion and plastic deformation under long-term high-temperature baking, and the dimensional accuracy and structural stability of the bearing can be maintained in a high-temperature environment. Compared with ordinary bearings, NMT high-temperature resistant bearings have a higher temperature resistance threshold and can adapt to continuous operation under ultra-high temperature radiation working conditions.
In terms of structural optimization, NMT builds a unique internal thermal balance structure for the bearing. The optimized hollow heat dissipation channel and uniform force distribution design can quickly export the heat generated by friction and external radiation, avoid local heat accumulation and high-temperature hot spots, and realize uniform temperature distribution inside the bearing. This design fundamentally suppresses the thermal deformation of rolling elements and raceways, ensures the fitting accuracy and rotation flexibility of internal parts in high-temperature environments, and avoids jamming and abnormal vibration caused by thermal distortion.
Matched with high-temperature resistant performance, the bearing is equipped with imported high-temperature resistant synthetic lubricating grease, which is not easy to volatilize and oxidize in high-temperature environments, maintains stable lubricating film protection for a long time, solves the problem of grease failure and dry friction of traditional high-temperature bearings, and greatly improves the continuous operation capacity of bearings in high-temperature scenarios. All products have passed long-term high-temperature cycle operation tests, with stable performance and no attenuation of mechanical properties after thousands of hours of high-temperature operation.
NMT high-temperature thermal stability spherical roller bearings are widely used in metallurgical rolling equipment, forging machinery, thermal processing production lines and other high-temperature industrial scenarios. They effectively solve the problems of thermal deformation, high-temperature wear and short service life of traditional bearings, reduce equipment maintenance frequency and downtime loss, and provide durable and reliable core component support for long-term continuous production of high-temperature industrial equipment.