Metallurgical smelting equipment, large heavy-duty gear reducers, vertical stamping equipment, plastic extruders and other heavy industrial machinery continuously bear huge unidirectional axial loads during operation, accompanied by impact loads under partial working conditions. Ordinary thrust ball bearings feature limited rolling contact area, unable to withstand ultra-large axial pressure. Plastic deformation and pitting failure easily occur under long-term heavy load operation. Conventional thrust spherical roller bearings have relatively large radial dimensions and cannot adapt to compact vertical transmission boxes. Heavy industry equipment urgently requires thrust cylindrical roller bearings with ultra-high axial load capacity and compact structure.

Various vertical heavy machinery operates continuously for a long time. Instant impact loads are generated during startup and shutdown. The working environment is filled with dust and high temperature. Once the bearing load capacity is insufficient, plastic deformation will easily appear on rolling bodies and washers, directly causing equipment shutdown for maintenance. Traditional thrust bearings lack sufficient rigidity. Deformation occurs under axial force, impairing positioning accuracy of transmission systems and leading to poor gear meshing and intensified vibration. Metallurgical and heavy transmission industries demand high-rigidity, impact-resistant and high-temperature resistant thrust support bearings to guarantee long-term stable non-stop production of complete sets of equipment.

NMT Thrust Cylindrical Roller Bearings consist of shaft washers, housing washers, cylindrical rollers and cages. They mainly bear unidirectional axial loads. The linear contact structure of rollers effectively expands stress contact area and delivers excellent axial load capacity. The cage separates cylindrical rollers precisely to ensure stable parallel operation and prevent mutual friction, skew and jamming. Featuring compact structural design, the bearings occupy less installation space than thrust spherical roller bearings of equivalent load capacity, suitable for narrow box installation positions of vertical reducers and extrusion equipment. Raw materials are optimized through special heat treatment with excellent high-temperature stability, adapting to continuous medium and high-temperature working conditions. Product dimensions comply with universal industrial standards for convenient renovation and replacement of new and old heavy machinery, suitable for multiple heavy-load conditions including continuous operation and intermittent impact.

Bearing washers and cylindrical rollers are made of high-purity bearing alloy steel. Multi-stage quenching and tempering heat treatment deliver uniform and stable hardness, outstanding compressive strength and contact fatigue resistance. Roller end faces and rolling surfaces are precisely ground to reduce friction coefficient and operational heat generation. Integrated cages are processed from high-strength wear-resistant materials with strong deformation resistance, resisting deformation and fracture under heavy loads. All components are grouped and matched by dimension to guarantee even load distribution on each roller. Finished products pass load tests and rotation inspections one by one to remove defective units with poor precision and unsmooth operation.

The complete series of specifications deliver excellent interchangeability. Widely applied in auxiliary mechanisms of metallurgical rolling mills, large heavy-duty gear reducers, vertical extrusion machinery, heavy mining hoisting equipment, heavy hydraulic presses and cement vertical roller pressing devices, satisfying ultra-large axial load support demands of heavy industrial equipment.

Core Product Advantages

Linear contact cylindrical roller structure with large contact area and outstanding axial load capacity to sustain continuous heavy loads and instantaneous impact loads;

The cage separates rollers evenly to restrict skew and offset, avoid mutual friction of rolling bodies and realize stable operation;

Compact overall structure with smaller radial size under equal load specifications, fitting vertical boxes and narrow installation cavities;

Excellent rigidity and small deformation under axial force, effectively maintaining positioning precision of transmission parts and reducing overall machine vibration;

Good high-temperature resistance, suitable for medium and long-term high-temperature environments of metallurgical and extrusion equipment;

Compatible with multiple lubrication modes including circulating oil lubrication and long-term grease lubrication, adapting to all-weather non-stop continuous production;

Standard universal overall dimensions with strong compatibility. No extensive base modification required for maintenance and replacement of heavy equipment;

Superior anti-fatigue performance. Plastic deformation and surface spalling failures rarely occur under long-term continuous heavy-load operation.

Typical Application Scenarios

Auxiliary transmission mechanisms of metallurgical rolling mills; large industrial heavy-duty gear reducers; vertical plastic and rubber extrusion equipment; transmission units of heavy mining hoists; support positions of heavy hydraulic presses; cement vertical roller mill machinery; axial support points of large vertical water pumps and vertical air compressors.

Quality Assurance

NMT Thrust Cylindrical Roller Bearings adopt high-purity bearing alloy steel raw materials. Incoming materials complete composition testing and metallographic sampling inspection to strictly control internal impurity content. Washer blanks are formed by forging to eliminate casting defects. Multi-stage stress relief heat treatment is implemented after rough machining to avoid deformation under long-term load operation. Cylindrical rollers go through precision turning and ultra-precision grinding. Strict control is carried out on dimensional tolerance, straightness and surface roughness. Cages are formed by high-precision machining. Window clearances are precisely calculated to guarantee flexible roller movement without collision interference.

All rollers are grouped and matched by dimension to realize uniform load distribution within each bearing. Semi-finished products pass visual flaw detection and dimensional recheck to remove workpieces with cracks and collision damage. Assembled finished products undergo axial load simulation tests and dynamic operation tests to inspect heat generation and vibration indicators. All unqualified products are completely sorted out to ensure consistent performance of bulk goods and supply reliable axial support solutions for heavy vertical industrial equipment.

Product Range

Single-row thrust cylindrical roller bearings, double-row thrust cylindrical roller bearings. Selection depends on axial load magnitude, operating temperature and installation space.

Brand Strength

NMT focuses on R&D and manufacturing of heavy-duty thrust bearings. Targeting industry pain points of metallurgical equipment, heavy reducers and vertical machinery including large axial loads, easy bearing deformation failure and high demand for temperature resistance, NMT continuously optimizes roller profile design and heat treatment technology. The bearings effectively solve common problems of axial support bearings on heavy equipment such as insufficient bearing capacity, excessive heat generation and short service life, reduce shutdown maintenance frequency of heavy industry equipment, improve continuous operation efficiency of production lines and lower comprehensive equipment operation and maintenance costs.