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Super Precision Bearings

NSK offers a wide lineup of precision angular contact ball bearings where customers to choose the optimum specification of bearing according to the needs of their application. NSK precision angular contact ball bearings provide the perfect solution for applications requiring high runout accuracy of rotating machine parts, such as the machine tool main spindles, or the application of faster rotating speeds.

Features

  1. This lineup of bearing includes a basic series that meets ISO standards, and a specified series targeting machine tools.
  2. A series of sealed angular contact ball bearings with prepacked grease is available.
  3. The Robust™ series of high performance bearings include, a wide lineup of bearings, ranging from highly rigid types to ultrahigh-speed types.

Product List

Standard Series of High Precision Angular Contact Ball Bearings

A basic series of NSK precision angular contact ball bearings that meets ISO standards.

Features:
1.  NSK’s Z steel, a long life bearing steel, is used as the standard material.
2. The 70 and 79 series are sealed with a grease life that has been improved by one and half times.
3. Two types of cages are available.

Robust Series of Ultra High-Speed Angular Contact Ball Bearings

This series developed with the best of material, evaluation, and analysis technologies, of which NSK is proud. This is highly functional series for machine tool. In addition, the sealed type of this series, which offers longer service life and shows excellent environmental friendliness is available.

 

 

Features:

  1. Reduces heat generation and achieves high-speed rotation
  2. X type bearing, which is made of SHX steel developed by NSK, offers long service life for use in high-speed applications.
  3. Wide lineup to meet various applications is achieved.
  4. Grease life of the selaed type has been extended.

Robust series, Spinshot™ II of Ultra High-Speed Angular
Contact Ball Bearings with Oil-Air Lubrication

Ultra High-Speed rotation and low-noise performance has been achieved through focusing efforts on optimizing the oil-air lubrication system of this bearing.

 

 

Features:

  1. Achieves 40,000 min-1 with ISO-40 equivalent taper using oil-air lubrication.
  2. Noise levels reduced by approximately 3 dB to 5 dB in comparison with conventional oil-air lubrication.
  3. Achieves 40,000 min-1 with about half of the air volume of conventional oil-air lubrication.

Robust BSR series of Ultra High Precision Angular Contact Ball Bearings

Accommodate the need for high precision and ultra high-speed for shaft diameters of less than 25 mm.

Highly functional series that support the high performance requirements of compact spindles.

 

 

Features:

  1. Ultra high-speed bearings designed specifically for compact spindles.
  2. X-type with inner and outer rings that are made of excellent heat resistant and wear resistant SHX steel help high-speed applications achieve a long service life.
  3. High precision specifications are standard.

TAC-F Series of Highly Rigid Angular Contact Thrust Ball Bearings

The TAC-F series of angular contact ball bearings is used to sustain axial loads and is focused on high rigidity.
Features:

  1. A contact angle of 50℃ that focuses on rigidity, and perfect for highly rigid spindles that operated under heavy-duty cutting applications.
  2. Inseparable design facilitates easier handling.

Robust Series of High-Speed Angular Contact Thrust Ball Bearings

A Robust series of angular contact ball bearings for sustaining axial loads that achieves high-speed and high rigidity performance.
Features:

  1. The BTR series has a contact angle of 40° that features both high thrust rigidity and low heat generation properties.
  2. The BAR series has a contact angle of 30° that focuses on high-speed performance in comparison to the BTR series.

NSK Super Precision Cylindrical Roller Bearings are designed specifically to handle large radial loads in high-speed spindle applications that demand high running accuracy (runout) of bearing-spindle arrangements.

Features

  1. This lineup of bearing includes a basic series that meets ISO standards and a specified series targeting machine tools.
  2. A double-row cylindrical roller bearing series is available for applications requiring high rigidity. A single-row cylindrical roller bearing series is available for applications requiring high-speed performance.
  3. A Robust™ series of high performance bearings is available for applications requiring both high-speed and high-rigidity performance.

Product List

Highly Rigid Series of Double-Row Cylindrical Roller Bearings
New material and new design facilitate enhanced machine tool performance.

Features:

  1. High-speed performance and low heat generation
  2. Enhanced service life with grease lubrication
  3. Highly rigid PPS resin cage restricts deformation due to centrifugal force, and achieves stable rotation at high speeds.

Standard Series of Single-Row Cylindrical Roller Bearings

Basic series of NSK Super Precision Single-Row Cylindrical Roller Bearings that meet ISO standards.

Features:

  1. NSK long life Z bearing steel used as standard material.
  2. Highly rigid roller guided machined brass cage

Robust Series of Single-Row Cylindrical Roller Bearings

The highly heat-resistant PEEK cage and excellent heat resistant and wear resistant SHX steel help the bearing achieve a dmn value of 2.2 million.

 

Features:

  1. Optimum design for low heat generation
  2. SHX steel for improved seizure resistance.
  3. High-speed performance achieved through use of heat-resistant, highly rigid, PEEK resin material

Highly precise angular contact thrust ball bearings for precision ball screws have been designed specifically for each application. Lineup includes both a highly rigid series and high-capacity series.

Features

  1. The highly rigid series for machine tool applications has been designed specifically to provide large axial rigidity and precise rotation with lower starting torque.
  2. The highly rigid series is available with a lubricant seal for machine tool applications.
  3. The high load capacity series for electric injection molding machines offers enhanced service life through the use of optimally designed ball diameter and contact angle for a higher load rating.

Product List

NSKHPS Ball Screw Support Bearings for High-Load Drive Applications, NSKTAC 03

Bearing series with a highly functional design that features a simplified design.

 

 

Features:

  1. High capacity and compact size
  2. Improved reliability offers an extended service life in comparison to standard angular contact ball bearings.
  3. Optimally designed ball bearings achieve lower rotating torque.

NSKHPS Angular Contact Thrust Ball Bearings for Ball Screw Support (Double Row) BSBD™ series

Double row angular contact thrust ball bearings in back-to-back arrangement (DB) with a single outer ring. The bearings from this series are contact sealed and pre-greased for easy handling.

 

  1. Features:

    1. Prepacked with high-performance grease and easier handling.
    2. BSF Type bearings feature bolt holes and an extraction groove on the outer ring for easy mounting directly on to the housing and removal from.
    3. BSBD bearings are available in matched DT pairs for applications with large external loads or where high rigidity and long life are required.

Highly precise angular contact thrust ball bearings for precision ball screws have been designed specifically for each application. Lineup includes both a highly rigid series and high-capacity series.

Features

  1. Ball bearings achieve high running accuracy and low torque rotation.
  2. High moment stiffness on a par with crossed roller bearings.
  3. Exclusive design of the thin cross-section profile is thinner than that of a standard angular contact ball bearing.

Product List

Robustslim™ series of low profile, highly accurate, angular contact ball bearings

Angular contact ball bearings that have been designed specifically for machine tool swiveling spindle heads.
Achievement high running accuracy and low torque rotation due to ball bearing.

 

 

 

Features:

  1. Rotational accuracy is less than 0.5㎛.
  2. Moment stiffness is on a par with crossed-roller bearings.
  3. Thin cross-section profile is 35% thinner than that of a standard angular contact ball bearing.

NSKHPS Angular Contact Thrust Ball Bearings for Ball Screw Support (Double Row) BSBD™ series

Double row angular contact thrust ball bearings in back-to-back arrangement (DB) with a single outer ring. The bearings from this series are contact sealed and pre-greased for easy handling.

 

  1. Features:

    1. Prepacked with high-performance grease and easier handling.
    2. BSF Type bearings feature bolt holes and an extraction groove on the outer ring for easy mounting directly on to the housing and removal from.
    3. BSBD bearings are available in matched DT pairs for applications with large external loads or where high rigidity and long life are required.

Basic Specification

  • n/am³/hr
  • n/abar
  • n/acPs
  • n/a°C
  • 0mm
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