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Non-Magnetic Hybrid Ceramic Bearing

3NC系（3NC604YH4 PN 等） / JTEKT Corporation (Official website) / Listed on page 37 of the document

A bearing with non-magnetic stainless steel inner and outer rings and ceramic balls, rotating with stable torque unaffected by magnetic fields.

Last verified: (date the content was verified against the source document)

Non-Magnetic Hybrid Ceramic Bearing on page 37 of JTEKT Corporation "特殊環境用軸受シリーズ 軸受・セラミック軸受 (EXSEV Bearings and CERAMIC Bearings for Extreme Special Environments)"
Source: JTEKT Corporation「特殊環境用軸受シリーズ 軸受・セラミック軸受 (EXSEV Bearings and CERAMIC Bearings for Extreme Special Environments)」page 37
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Specifications

Inner diameter d 4～40 mm
Outer diameter D 12～80 mm
Operating Atmosphere (Pressure) Atmospheric pressure to 10-5 Pa
Operating Temperature Range -30～200 ℃
Permissible rotational speed dmn value < 18000, max. 1000 min-1
Permissible radial load Approx. 3% or less of basic dynamic load rating

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Non-Magnetic Hybrid Ceramic Bearing).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 4～40 mm

    Select the bore diameter d to match the shaft seat, the outside diameter D to match the housing bore, and the width B to suit the installation space. Main dimensions are standardized in ISO and JIS dimension series, so interchangeable products can be found by boundary dimension designation. For tapered roller bearings, also check the assembled width T; for thrust bearings, also check the height H.

  2. 2. Dynamic load rating based on life calculation

    The basic dynamic load rating Cr is the reference value for calculating rated life. Verify that the required life is met using the equivalent load during operation and the rotational speed. For ball bearings, life is proportional to the cube of the load ratio, so providing load margin greatly extends life.

  3. 3. Margin for static and shock loads

    The basic static load rating C0r is the allowable standard for permanent deformation generated at the rolling elements and raceways under stationary or low-speed conditions. For applications with oscillating motion or shock loads, confirm that a static safety factor against the maximum load is secured using C0r.

  4. 4. Operating speed and lubrication method

    The limiting speed differs by lubrication method, and separate values are given for grease lubrication and oil lubrication. Confirm that the normal operating speed does not exceed the limiting value, and in high-speed ranges also consider cage material and precision grade. The reference speed can also be consulted as a thermal guideline.

  5. 5. Precision grade and internal clearance

    Precision grades (P0, P6, P5, etc.) indicate rotational accuracy and dimensional accuracy; for high-precision applications such as machine tool spindles, select higher grades. Internal clearance (C2, CN, C3, etc.) is selected to allow for changes caused by interference fit and temperature differences during operation.

  6. 6. Materials and lubrication suited to the environment

    This product: Operating Temperature Range -30～200 ℃

    For corrosive, high-temperature, vacuum, or clean environments, select specifications such as rings and rolling elements made of stainless steel or ceramics, or solid lubricants and fluorine grease for vacuum use. Check the operating temperature range, low dust generation, and whether food-grade grease registration applies against the application conditions.

This guide was written by AI based on the listed products' documents and specification items.

About Rolling Bearings and all products

Description

Lubricated by a solid lubricant contained in the cage, and usable in vacuum. Used in semiconductor inspection equipment, welding machines, and other applications.

Features

  • Non-magnetic
  • Stable torque in magnetic fields
  • Usable in vacuum

Applications

  • Semiconductor manufacturing equipment
  • Semiconductor inspection equipment
  • Can-making equipment
  • Superconducting-related equipment
  • Welding machines

FAQ

Q. In what environments can the 3NC Series non-magnetic hybrid ceramic bearing be used?
A. It is a bearing with non-magnetic stainless steel inner and outer rings and ceramic balls, rotating with stable torque in magnetic fields. It can be used in vacuum, with an operating atmosphere (pressure) of atmospheric pressure to 10-5 Pa.
Q. What are the operating temperature range and permissible rotational speed of the 3NC Series?
A. The operating temperature range is -30 to 200 ℃. The permissible rotational speed is dmn value < 18000, maximum 1000 min-1.
Q. What are the dimensional ranges and permissible radial load of the 3NC Series?
A. The bore diameter d is 4 to 40 mm, and the outside diameter D is 12 to 80 mm. The permissible radial load is approximately 3% or less of the basic dynamic load rating.
Q. For which applications, such as semiconductor manufacturing equipment and welding machines, is the 3NC Series suited?
A. It is used in semiconductor manufacturing equipment, semiconductor inspection equipment, can-making equipment, superconducting-related equipment, welding machines, and others. It is lubricated by a solid lubricant contained in the cage.

Written by AI based on the content of the source documents.

Source documents

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