Established in 1963, NTN is one of the world's largest bearing producers. With manufacturing throughout the world, NTN is a leading bearing supplier to both the industrial and automotive markets. NTN is also a leader in the development of precision equipment in cutting-edge fields and supplies many different industries, including automotive, construction equipment, wind energy, and steel and paper mills.
NTN ball bearings are available in sizes ranging from 10 mm to 320 mm outside diameters and in a wide variety of configurations of seals, shields, lubricants, internal clearances, and cage designs. With more than ninety years of manufacturing expertise in ball bearings, NTN offers one of the industry’s widest arrays of products to fit your application.
NTN Deep groove, or single row radial, ball bearings are the most widely used bearings. They utilize an uninterrupted raceway that makes them optimal for radial loads. This design permits precision tolerance, even at high-speed operation. NTN ball bearings use standard cages of pressed steel, as well as machined, brass cages for high-speed applications. NTN also offers bearings with locating snap rings.
Prelubricated bearings have integral seals, or shields, which are packed with long-life grease. In many applications, these bearings can be used without supplementary seals, closures, or protective devices.
NTN TMB Bearings feature a lighter Weight and longer Life— Thermal Mechanical Ball Bearing (TMB) features: Clean, vacuum-degassed, high-carbon chromium steel that undergoes a proprietary heat treatment to reduce crack sensitivity; High-power density that allows a smaller bearing to support higher loads; Low-weight, compact designs; A wide range of sizes.
Single row angular contact ball bearings feature raceways with high and low shoulders. These opposing raceways are designed to carry thrust load in one direction.
Double row angular contact ball bearings have an inner and outer ring with a double raceway. The two rows are so related that the contact angle is similar to a pair of back-to-back single row bearings.
NTN Insulated Ball Bearings offer two options to prevent electrical pitting damage. Double row angular contact ball bearings have an inner and outer ring with a double raceway. The two rows are so related that the contact angle is similar to a pair of back-to-back single row bearings.
NTN Insulated Ball BearingsNTN’s MEGAOHM™ Series of insulated bearings has been specifically designed to counteract electrical pitting. These bearings are available in both ceramic and resin versions that are suited to a variety of applications. Coating the outer ring of the bearing provides a barrier (capable of resisting at least 100 M) at 500 VDC) against any stray currents that would pass through the bearing.
For especially problematic applications, NTN offers ceramic hybrid bearings. Using conventional steel inner and outer rings, silicon nitride rolling elements provide excellent electrical insulation while reducing rotating mass and improving heat dissipation.
NTN Specialty Ball BearingsDouble-row, self-aligning bearings from NTN utilize an inner ring with a single spherical raceway. In this configuration, the inner and outer rings can be misaligned relative to each other. The resulting effect is a comparatively large single angle that imposes moment loads upon the balls. The boundary dimensions of self-aligning bearings can be the same as standard ball bearings.
NTN Stainless Steel Series Bearing Units have both stainless bearings and stainless steel housing. This new series from NTN provides corrosion resistance and longer lubrication life in a clean unit with low torque characteristics.
NTN Thermo Plastic Mounted Bearing UnitNTN Plastic Housing Series Bearing Units features stainless bearings and glass fiber reinforced plastic housing. The NTN Plastic Housing Series Bearing Units ensures a clean operating environment.
NTN bearing units in the plastic series feature ball bearings inserted into housings made of plastics that provide superior resistance to corrosion as compared to standard series cast iron units. This series is especially useful in a wide variety of applications because of the nonmagnetic and rust free properties of the housing.
The solid grease lubricant in the ball bearing, solely developed by NTN, reduces leakage from the bearing, significantly reducing environmental pollution. Also, the housing will not stain, nor is there paint to peel and contaminate the environment.
NTN Ductile Cast Iron Mounted Bearing UnitNTN Bearing Units with Ductile Cast Iron Housing feature a spheroidal graphite cast iron housing which helps with design optimization.
Housing weight of the NTN Bearing Units with Ductile Cast Iron Housing is reduced by 40%, with a compact design When compared with the standard NTN housing the ductile series housing enjoys a 40% weight reduction. Plus, the housing is useful for a size reduction in machine equipment. This is achieved by minimizing as much as possible non-critical dimensions of the housing allowing the housing to be placed in tight locations.
NTN Steel Series Mounted Bearing UnitsNTN Bearing Units Steel Series features a rolled steel housing for general structures which ensures a safer design.
Products in the NTN Bearing Units Steel Series are made of precision gas cut rolled steel. NTN steel housings offer superior strength characteristics when compared to cast iron and cast steel housings.
The rolled steel microstructure is more consistent than cast iron or cast steel, reducing the risk of housing fracture under severe conditions.
Rolled steel housing dimensions of the NTN Bearing Units Steel Series are consistent with cast units, allowing them to be interchanged with NTN standard housings and other manufacturers ISO standard.
NTN rolled steel housings provide superior strength to cast steel and cast iron. Their ability to resist impact loads makes them suitable for applications involving heavy loads and vibration. Possible applications for NTN rolled steel housings include but are not limited to conveyors, trucks and overhead cranes at steel mills, mining machinery and pollution control equipment.
NTN Triple Sealed Bearings for Bearing UnitsThese reliable triple-sealed bearings are dustproof and waterproof.
They ensure a longer bearing life even when exposed to heavy airborne dust and splashes of foul water.
The construction of NTN Triple-Sealed Bearings for Bearing Units features a triple seal, balled setscrew, sealing device, sealed plate, and triple-lip. These features provide easy mounting of the bearing on the shaft, better sealing performance and prevention of contamination, plus enhanced corrosion resistance and pressure resistance.
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