Metallurgical rolling, industrial furnaces, heat treatment equipment, high-temperature drying production lines and thermal processing conveying equipment operate under extreme high-temperature working conditions. Ordinary standard bearings are prone to annealing softening, thermal structural deformation, grease carbonization, dry locking, raceway pitting and rapid precision failure under long-term high-temperature radiation. Bearing failure rate in high-temperature environments is several times higher than that in normal temperature conditions. Frequent locking shutdowns and parts replacement seriously affect the continuity of high-temperature production lines and bring huge production losses and maintenance cost pressure, which are core operational pain points of high-temperature industrial equipment.

Breaking the temperature resistance bottleneck of ordinary bearings, Japan NMT develops and manufactures high-temperature resistant cylindrical roller bearings specially for high-temperature industrial equipment. It achieves comprehensive upgrades in special material formula, structural design, heat treatment technology and high-temperature lubrication adaptation, solving the industrial problems of poor temperature resistance, softening, stalling and short service life of traditional bearings. Tailored for continuous high-temperature radiation, alternating heat and thermal shock working conditions, NMT bearings provide long-term and stable transmission guarantee for high-precision and heavy-duty high-temperature equipment such as metallurgical and furnace machinery.

Core Product Advantages

1. Special heat-resistant material prevents high-temperature softening: Made of high-temperature dedicated heat-resistant bearing steel with high-temperature stabilization quenching and tempering treatment, it avoids annealing, softening and deformation in high-temperature environments, maintaining stable structural hardness and mechanical strength to prevent high-temperature collapse failure.

2. Optimized thermal stability structure eliminates locking and stalling: The rolling clearance and fitting tolerance are precisely optimized according to the high-temperature thermal expansion coefficient, reserving expansion margin to effectively solve bearing locking, jamming and shaft scuffing caused by thermal expansion, ensuring smooth and stable high-temperature operation.

3. High-temperature lubrication adaptation prevents carbonization and dry friction: The internal structure matches special high-temperature lubrication system and heat-resistant dustproof sealing structure, delaying grease carbonization and oxidation failure, avoiding internal dry friction loss and greatly extending service life under continuous high-temperature operation.

4. Excellent thermal fatigue and thermal shock resistance: Unique high-temperature heat treatment process endows the bearing with outstanding thermal stability and thermal shock resistance, withstanding repeated heating and cooling alternating cycles without thermal fatigue cracks and surface spalling.

5. Long-term precision stability at high temperature: Super-finished mirror raceway and micron-level roller sorting ensure stable coaxiality and smooth operation even under high temperature, eliminating jitter and offset and guaranteeing the transmission and processing accuracy of high-temperature equipment.

Application Scenarios

Metallurgical steel rolling equipment, industrial furnace transmission mechanisms, heat treatment furnace roller tables, high-temperature drying production lines, thermal processing machinery and equipment, high-temperature fans, industrial heat treatment automation equipment, refractory material heavy machinery, high-temperature conveying and lifting systems.

Precision Manufacturing Technology

NMT high-temperature resistant cylindrical roller bearings are manufactured in strict accordance with Japanese high-temperature bearing specifications. Adopting selected high-temperature special base materials, the products undergo multiple constant-temperature forging, high-temperature stabilization heat treatment, low-expansion precision grinding, raceway superfinishing, high-temperature clearance calibration and dust-free precision assembly. Each product passes high-temperature durability test, thermal cycle shock test, high-temperature load fatigue test and high-temperature locking simulation test, ensuring high strength, high stability and long service life under extreme high-temperature working conditions.

Product Range

High-temperature open-type cylindrical roller bearings, heat-resistant sealed roller bearings, furnace dedicated high-temperature bearings, metallurgical rolling heavy-load high-temperature bearings, thermal alternating condition anti-fatigue bearings, high-temperature low-expansion precision bearings, customized non-standard high-temperature bearings.

Brand Value

Japan NMT deeply cultivates the field of extreme working condition bearings, iterating products for complex industrial environments such as high temperature, heavy load, impact, corrosion and high speed. With Japanese high-temperature precision manufacturing technology, it solves the problems of frequent failures and high maintenance costs of high-temperature industrial equipment, empowering the stable production of global high-temperature heavy industry.