During the operation of heavy-duty reduction transmission systems, metallurgical extrusion machinery, vertical machine tools and large injection molding equipment, transmission systems need to continuously withstand huge unidirectional or bidirectional axial loads, maintain operational rigidity and restrain axial play of main shafts. Conventional thrust ball bearings have relatively low load limits. When bearing excessive axial pressure, rolling elements are prone to crushing and raceway peeling. Ordinary thrust spherical roller bearings come with relatively high manufacturing costs and have performance redundancy under some low-speed stable working conditions. Industries including metallurgy and heavy transmission equipment are in urgent demand for thrust cylindrical roller bearings featuring outstanding load capacity, excellent rigidity and stable operation.

Large heavy industrial equipment operates continuously all year round with wide fluctuation of working loads. Instant impact axial force will be generated during startup and shutdown phases. Insufficient axial rigidity of bearings will lead to axial displacement of main shafts, directly affecting machining precision and transmission stability of equipment, resulting in workpiece dimensional deviation and abnormal gear meshing wear. Many heavy production lines cannot be shut down frequently for maintenance, putting strict requirements on the long service life of bearings. General thrust bearings available on the market can hardly balance ultra-high axial load capacity and long-term durability. High-quality thrust cylindrical roller bearings are urgently required by various heavy transmission and metallurgical equipment to guarantee stable operation.

NMT Thrust Cylindrical Roller Bearings adopt a structure with multiple cylindrical rollers arranged in parallel. Line contact exists between rollers and raceways, enabling the bearings to bear extremely large unidirectional axial loads and deliver excellent axial support rigidity, which can effectively limit axial movement of rotating shafts. Rollers are precisely sized and sorted to distribute loads evenly on all rolling elements and reduce risks of local stress concentration. Featuring compact structure and small axial occupation, the bearings fit various vertical installation structures. Cages separate rollers accurately to avoid mutual friction and collision between rolling elements and reduce operating noise and wear. Multiple units can be combined according to equipment demands to further raise overall load limit. Overall dimensions comply with universal industrial standards for convenient replacement during renovation of new and old heavy equipment, suitable for circulating oil lubrication conditions.

Shaft washers and housing washers are made of high-purity bearing alloy steel. Multiple forging processes optimize metal structure and greatly improve compression resistance of raceway areas. All components go through precision heat treatment to guarantee uniform and stable surface hardness of raceways and resist surface plastic deformation caused by continuous high pressure. Rollers are processed via fine grinding with unified dimensional precision to improve stress balance. Cages are made of high-strength wear-resistant materials with strong deformation resistance and are not easy to distort under long-term heavy loads. All burrs on contact surfaces are completely removed to reduce initial assembly wear.

The bearings cover a wide range of specifications with excellent interchangeability. Widely applied in heavy gear reducers, metallurgical extrusion presses, main shafts of vertical lathes and vertical grinders, mold locking mechanisms of large injection molding machines, vertical supports of large water pumps and heavy-duty mining transmission boxes, meeting high-strength axial load demands of heavy mechanical equipment.

Core Product Advantages

Cylindrical roller line contact bearing mode realizes extremely strong axial load capacity, adapting to working conditions with huge axial pressure on heavy equipment;

Outstanding overall rigidity effectively restrains axial play of main shafts and ensures transmission precision and operational stability;

Precisely classified and screened rollers distribute loads evenly, avoid local stress concentration and delay fatigue peeling of raceways;

Compact axial structural design occupies less installation space and fits mechanical equipment with vertical layout;

High-strength wear-resistant cages isolate each rolling element to prevent collision between rollers and cut operating noise;

Multiple units can be installed in series to flexibly improve overall axial load limit and adapt to ultra-heavy load conditions;

Precisely ground raceways deliver controllable friction loss and stable temperature rise during continuous operation, suitable for long-duration continuous production;

Standardized overall specifications support direct replacement of traditional bearings. No large-scale modification on base structures is required during heavy equipment renovation.

Typical Application Scenarios

Transmission support of large heavy-duty gear reduction boxes; axial support points of extrusion presses and forging presses in metallurgical industry; thrust support for main shafts of vertical lathes, vertical grinders and vertical machining centers; mold locking systems of large injection molding equipment; main shafts of vertical large centrifugal pumps and compressors; transmission boxes of heavy mining conveying equipment; main shaft assemblies of large rubber and plastic extrusion machinery.

Quality Assurance

NMT Thrust Cylindrical Roller Bearings are manufactured with premium special alloy steel for bearings. Incoming raw materials complete composition inspection and metallographic sampling to strictly control non-metallic impurity content inside steel. Blanks of shaft washers and housing washers are formed by composite free forging and precision die forging processes to optimize metal flow distribution of raceway areas and enhance mechanical performance of load-bearing positions. Multi-stage stress relief treatment is carried out after rough machining to eliminate internal stress generated by forging and cutting and guarantee stable dimensions under long-term loads. Ultra-precision grinding is implemented on working surfaces of raceways to strictly control flatness and surface finish and reduce rolling friction loss.

All rollers pass dimensional inspection and flaw detection one by one to remove workpieces with micro cracks and collision damage. Components go through high-pressure cleaning and constant-temperature drying before full assembly in dust-free workshops. Finished products complete axial ultimate load tests, continuous durability operation tests and temperature rise simulation tests. All unqualified products are eliminated thoroughly to ensure consistent performance of bulk goods and provide stable long-lasting axial support solutions for heavy industrial equipment.

Product Range

Single row thrust cylindrical roller bearings, multi-unit combined thrust cylindrical roller bearings. Selection depends on axial load magnitude and equipment installation space.

Brand Strength

NMT devotes itself to R&D and manufacturing of heavy-duty thrust bearings. Targeting pain points of high axial load working conditions including metallurgical equipment, heavy reducers and vertical machine tools, NMT continuously optimizes precision roller grinding technology and steel heat treatment schemes. The bearings effectively solve common failures of axial support bearings on heavy equipment such as insufficient load capacity, poor rigidity and easy fatigue peeling, extend maintenance cycles of heavy industrial equipment and lower economic losses caused by shutdown of large production lines.