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SKF INSOCOAT Bearing

SKF (Official website) / Listed on page 61 of the document

Insulated bearing with aluminum oxide thermally sprayed onto the outer or inner ring surface. Prevents electrical erosion caused by current passing through the bearing in electric motors and generators.

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SKF INSOCOAT Bearing on page 61 of SKF "SKF 転がり軸受カタログ 15 エンジニアリング製品 15A センサー軸受ユニット"
Source: SKF「SKF 転がり軸受カタログ 15 エンジニアリング製品 15A センサー軸受ユニット」page 61
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Specifications

Basic withstand voltage 1000 V DC
Inner diameter d 10～150 mm

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (SKF INSOCOAT Bearing).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 10～150 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

    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

Coated bearing in which aluminum oxide applied by plasma spraying is sealed with resin on the inner or outer ring of a standard bearing. The basic specification withstands up to 1000 V DC, and 2000 V DC and 3000 V DC versions are also available. Outer ring coated products are identified by the suffix VL0241, and inner ring coated products by the suffix VL2071. Applicable types are single-row deep groove ball bearings and single-row cylindrical roller bearings.

Features

  • Prevents bearing damage caused by electrical erosion
  • Basic withstand voltage of 1000 V DC
  • High-voltage versions of 2000 V DC and 3000 V DC are selectable
  • Inner ring coated products offer higher protection against high-frequency currents

Applications

  • Electric motors
  • Generators and related equipment
  • Machines using frequency converters

FAQ

Q. What are the basic withstand voltage and high-voltage options for SKF INSOCOAT bearings?
A. The basic withstand voltage is 1000 V DC. Versions for 2000 V DC and 3000 V DC are also available.
Q. In which applications can SKF INSOCOAT bearings prevent electrical erosion?
A. They prevent electrical erosion caused by current passing through the bearing in electric motors, generators and related equipment, and machines using frequency converters.
Q. How are the outer ring coated and inner ring coated versions of SKF INSOCOAT bearings distinguished?
A. Outer ring coated products are identified by the suffix VL0241, and inner ring coated products by the suffix VL2071. Inner ring coated products offer higher protection against high-frequency currents.
Q. What bearing types and bore diameter range are covered by SKF INSOCOAT bearings?
A. The applicable types are single-row deep groove ball bearings and single-row cylindrical roller bearings, with a bore diameter d of 10 to 150 mm.

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

Source documents

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