Precision Bearings

Precision bearings are effective in minimizing the maintenance cost of different industrial equipment and in maintaining the accuracy of their mechanism. Besides raising the productivity of different machines, these bearings help to achieve a high speed of machines. Resin polyamide based cage of these bearings minimizes heat build up inside machine components to boost their operating speed. Light in weight, Precision bearings are effective in boosting the productivity of different industrial systems without raising their maintenance charge.  Both sides seal based design of these bearings enhances their rust resistance capacity and prolongs their life span.

Ball Screw Support Bearing

Ball Screw Support Bearing is an advanced mechanical device that is widely acclaimed among our customers owing to its high build quality, tensile strength, and longevity. The bearing is a mechanical component that provides support for the positioning of rotating components of a machine. It helps in making the system work smoothly and friction-free. Ball Screw Support Bearing does not degrade in quality due to impacts, heat, and tough conditions. Our customers can get the bearing in different technical specifications and types and that too at a reasonable price.

Ball screw support bearings are specially designed for use in ball screw or lead screw applications. Most ball screw support bearings are angular contact bearings with a steep contact angle, such as 60 degree, and are available in duplex, triplex, and quadruplex configurations. Other designs include bearings containing separate thrust and radial roller bearings in a single assembly. Cartridge designs are also available that include a housing, seals, and bearings.


  • Unique surface modification technique against bearing rings allows drastic improvement in resistance against rolling contact fatigue, leading to longer service life (approximately two times, compared to the conventional type
  • Seals are provided for both sides of a bearing to enhance the performance of rust prevention and preservation of grease. (Light-contact seal type)
  • Long-life special grease is used. (Light-contact seal type)
  • Unique surface modification technique against bearing rings and special grease reduce fretting (1/5 or less for sliding mode, 1/10 or less for rolling mode, compared to the conventional type). (Light-contact seal type)
  • This grease-packed type bearing eliminates further grease packing and allows easier handling. (Light contact seal type)


High Precision Spindle Bearings

Bearings optimised to get the best from your machine

The range of precision bearings has been developed by NTN experts in close collaboration with some of the biggest names in machine tools. The benefit of the range?

  • Productivity: optimised production cost
  • Accuracy: high-quality machining
  • Reliability: reduced maintenance costs
  • Eco-design: environmental protection


A wide range of high-precision bearings for all your needs

Spindle bearings

  • High Precision Angular contact ball bearings - Standard, High-Speed and Ultra-high-speed
  • High precision cylindrical roller bearings with 1 or 2 rows of rollers - Standard and High-Speed
  • Angular Contact Ball Bearings for Axial loads


Ball screw support bearings

  • BSTU - sealed
  • BST - open/sealed
  • A focus on technology in all our ranges


Cage technology

Our cages are made from resin polyamide for the best price/performance ratio.

  • T2: cage in innovative and high performance polyamide resin for precision angular contact ball bearings for machine tools. It allows rising temperatures to be lowered to reach higher speeds.
  • T6: PEEK cage, light and sturdy, specially designed for spindle bearings on cylindrical rollers Its design and ability to store grease allows to reduce heat generation and therefore reach higher speeds.


And we also offer:

  • T1: cage in phenolic resin for high speed angular contact ball bearings capable of maximum speeds.
  • Special steel 2LA



  • Optimised chemical composition of steel
  • An unique surface modification technique



  • Reduction of maintenance costs
  • Higher operational reliability


Special heat treatment 2A


  • Optional for ball screw support bearings (BST)
  • 80% less fretting corrosion while sliding
  • 90% less fretting corrosion while rolling



  • Environmentally
  • Longer service life & high reliability


Internal designs optimized for ultra-high speed and top ranges

  • NTN has developed ultra-high speed and top ranges by working on the internal designs and technologies of cages.
  • Radial angular contact ball bearing  super precision, high or ultra-high speed
  • Cylindrical roller bearings  high precision and ultra-high speed


Each application has an optimum preload

  • 4 levels of standard preload: Light (GL), normal (GN), central preload (GM), high preload (GH)
  • And specially preloaded on request


Hybrid versions with ceramic balls, optionally throughout the entire range

These hybrid versions boost the performance of our bearings and those of your machine tools: speed (+30%), rigidity (+10%), useful life (x3)



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