Various light-duty conveying devices, food production lines, agricultural machinery and ventilation fans widely adopt rotary support components. Traditional split bearings matched with separate flange housings lead to complicated assembly procedures. Repeated coaxial calibration is required during installation, consuming plenty of time for on-site commissioning. Ordinary non-flange outer spherical bearings need additional processing of mounting brackets, increasing component processing costs. The overall structure is loose, and bolt loosening and bearing offset tend to occur after long-term vibrating operation of equipment. Many food processing and agricultural machinery work under complicated conditions with water vapor, dust, crop residues and splashing cleaning liquid. Ordinary bearings feature insufficient sealing performance. Impurities easily invade bearings, causing deterioration of grease and rapid wear of rolling elements, resulting in frequent downtime maintenance. Meanwhile, many equipment shells have limited thickness and reserved installation space. Integrated bearing products with compact structure and direct locking installation are required by the industry. The market is in urgent need of flanged outer spherical bearings integrating bearing bodies and flange bases to simplify assembly procedures with excellent centering performance and sealing protection capacity, adapting to complicated working conditions with heavy dust and humidity.

With continuous popularization of modern agricultural equipment, automatic food production lines and ventilation systems, equipment operates uninterruptedly for a long time accompanied by constant vibration. Split bearing units are composed of bearings and independent bearing housings, bringing heavy workload in warehouse management and assembly. Under long-term vibration loads, connecting fasteners gradually loosen, triggering eccentric rotation of shafts and aggravating abnormal bearing wear. Food processing machinery requires regular water cleaning. Agricultural conveying equipment is exposed to outdoor dusty and humid environments for a long time. Ordinary bearings are prone to water and dust intrusion, shortening service life. Many complete equipment designs pursue lightweight and modularization. Designers hope to reduce part types and lower frame processing difficulty. Integrated flanged outer spherical bearings integrate mounting flange plates, eliminating the need for additional support bases and enabling direct fixing by fitting equipment shells, greatly simplifying mechanical structure design. Bearings possess self-aligning performance, capable of compensating tiny coaxial errors caused by machining and assembly, effectively relieving additional loads induced by misalignment and extending bearing service life.

NMT Precision Flanged Outer Spherical Bearings integrate outer spherical ball bearings and circular flange bases into modular support units. Separate bearing housings are not required. Bearings can be locked directly onto equipment wall plates and shell surfaces via flange bolt holes, drastically shortening assembly time. Outer rings adopt outer spherical structures with outstanding self-aligning capacity to moderately compensate installation deviation and avoid extra stress brought by misaligned operation. Rolling elements and inner & outer rings are manufactured from high-purity bearing steel through quenching and precision grinding for stable friction and steady load capacity. Multiple sealing structures are available. Double-layer rubber seals can block invasion of dust, water vapor and cleaning liquid into bearing inner cavities, fitting water washing conditions in food workshops and dusty humid outdoor environments of agricultural machinery. Long-lasting grease is pre-filled at factory, suitable for continuous operation under medium and low rotating speeds. Widely applied to food conveying lines, grain conveying equipment, industrial ventilation fans, small packaging machinery, aquatic processing equipment, greenhouse transmission devices and light-duty belt conveyors. Complete ranges of flange sizes and inner diameter specifications feature strong versatility for convenient replacement of new and old equipment.

Flange bases are integrally cast from high-strength cast steel with excellent structural rigidity, resisting deformation and cracking under vibration loads. Bearing inner and outer rings undergo stabilized heat treatment with uniform hardness and outstanding contact fatigue resistance. Steel balls go through precision grading and sorting to guarantee balanced stress and low-noise stable operation. Sealing components are made of hydrolysis-resistant and aging-resistant rubber to resist erosion from water vapor and weak acid-base cleaning media. All finished products pass rotation flexibility testing, visual flaw inspection and dimensional accuracy examination. Products with rotation jamming and out-of-tolerance dimensions are eliminated to ensure consistent quality among batches.

Rich specifications are extensively used in food processing conveying lines, grain elevating and conveying machinery, industrial centrifugal fans, light-duty automatic packaging equipment, fruit and vegetable cleaning production lines, greenhouse transmission mechanisms and small belt conveyors, meeting simple installation and support demands of various light-duty rotary mechanisms.

Core Product Advantages

Integrated molding of bearings and flange bases with modular design. Separate bearing housings are omitted to reduce component quantity and frame processing costs;

Built-in circular flange mounting holes enable direct locking by fitting equipment shells for simple and fast assembly, drastically cutting on-site installation and commissioning hours;

Outer ring spherical structures realize self-aligning capacity to compensate assembly errors and prevent early bearing wear caused by misalignment;

Optional double-layer sealing structures provide excellent dustproof and waterproof performance, adapting to water washing of food machinery and dusty humid outdoor working conditions of agricultural equipment;

Bearing steel materials together with precision grinding technology deliver smooth operation and low vibration. Temperature rise stays stable during continuous operation for prolonged service life;

High-quality grease is pre-filled at factory for long-cycle maintenance-free operation under regular working conditions and reduced downtime for maintenance;

Compact structure occupies less space, suitable for light-duty automatic equipment with limited shell mounting space;

Complete standardized specifications with excellent interchangeability, directly applicable for new machine matching and bearing unit replacement of old equipment.

Typical Application Scenarios

Food processing belt conveying production lines; grain elevating and conveying machinery; industrial ventilation centrifugal fans; automatic fruit and vegetable cleaning production lines; light-duty packaging machinery; greenhouse transmission devices; aquatic processing conveying mechanisms; small light-duty belt conveyors.

Quality Assurance

NMT Precision Flanged Outer Spherical Bearings adopt high-quality steel as raw materials. Incoming materials pass hardness and metallographic inspection. After integral casting, flange bases receive precision machining. Bearing rings go through forging, heat treatment and precision grinding in sequence with strict control over dimensional tolerance and surface accuracy. Steel balls are sorted by dimensions to ensure unified specifications of rolling elements inside each bearing. Sealing fittings and lubricating grease are selected to adapt to humid and dusty working conditions. All components receive visual defect inspection and dimensional verification. Workpieces with collision marks, burrs and unqualified dimensions are fully eliminated. Each assembled finished product undergoes rotation smoothness testing. Samples are selected for vibration and sealing durability tests. Defective goods are sorted separately to guarantee flexible rotation, reliable sealing and accurate mounting dimensions of every bearing, supplying stable rotary support solutions for food, agricultural and ventilation machinery.

Product Range

Single-seal flanged outer spherical bearings, double-layer rubber sealed flanged outer spherical bearings. Selection depends on rotating speed, dust level and contact with cleaning liquid.

Brand Strength

NMT devotes itself to R&D and manufacturing of outer spherical bearing units. Targeting common pain points of food machinery and agricultural conveying equipment including complicated assembly, vibration-induced loosening, water and dust intrusion, NMT continuously optimizes base structures, sealing schemes and heat treatment technologies. The bearings effectively mitigate frequent failures such as water & dust invasion, premature failure and abnormal operation noise, lower equipment maintenance and replacement costs, and help machinery manufacturers realize modular and easily-assembled overall structural design.