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Double-Row Deep Groove Ball Bearing

複列深溝玉軸受 ATN9 / SKF (Official website) / Listed on page 123 of the document

Double-row deep groove ball bearing with bore diameter of 10 to 90 mm. High load capacity, supports radial loads and loads in both axial directions.

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Double-Row Deep Groove Ball Bearing on page 123 of SKF "SKF 深溝玉軸受 製品カタログ(設計およびバリエーション)"
Source: SKF「SKF 深溝玉軸受 製品カタログ(設計およびバリエーション)」page 123
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Specifications

Inner diameter d 10～90 mm
Outer diameter D 30～160 mm
Width B 14～51 mm
Basic dynamic load rating Cr 9.23～138 kN
Basic static load rating C0r 5.2～125 kN

How to choose Deep Groove Ball Bearings

Points to check when selecting, with the values for this product (Double-Row Deep Groove Ball Bearing).

  1. 1. Main dimensions to suit shaft and housing

    This product: Inner diameter d 10～90 mm

    Select the bore diameter d to match the shaft diameter, the outside diameter D to match the housing bore, and the width B to suit the installation space. The listed products cover a wide range of bore diameters from 0.6 to 1420 mm, and even at the same bore diameter there are dimension series with different outside diameters and widths. Since load capacity and mass change with the dimension series, confirm the three dimensions in combination.

  2. 2. Basic dynamic load rating for life calculation

    This product: Basic dynamic load rating Cr 9.23～138 kN

    The basic dynamic load rating Cr is the reference value for calculating rolling fatigue life, and life is estimated from the ratio of the actual applied load to Cr. For high loads or when long life is required, select a bearing with a larger Cr. Bearings made of special materials may have lower ratings than steel bearings of the same dimensions, so confirm life under the operating conditions.

  3. 3. Check static and shock loads against static rating

    This product: Basic static load rating C0r 5.2～125 kN

    The basic static load rating C0r is the guideline load at which permanent deformation does not occur, applicable when stationary, rotating at low speed, or subjected to shock loads. For applications with oscillating motion or large loads while stopped, select with emphasis on the ratio to C0r (static safety factor) rather than the dynamic rating.

  4. 4. Internal clearance to suit fit and temperature

    Radial internal clearance decreases during operation due to interference fits and temperature differences between the inner and outer rings. Clearances larger than standard, such as C3, are used in applications where the inner ring tends to expand, such as motors or high-temperature environments. Clearance that is too small leads to heat generation and seizure, so determine the class from the fit and operating temperature.

  5. 5. Materials and lubrication suited to the environment

    Stainless steel or ceramics (silicon nitride, zirconia, silicon carbide) are used in water or chemical solutions, while solid lubricants such as graphite or fluorine-based solids and fluorine grease are used in high-temperature, vacuum or clean environments. Listed products have maximum operating temperatures of 250 to 350°C, so select the material and lubrication method based on temperature, atmosphere and dust-generation requirements.

  6. 6. Check speed limits and electrical corrosion countermeasures

    Confirm that the limiting speed and reference speed exceed the operating speed. In equipment where shaft current flows, such as inverter-driven motors, hybrid bearings with insulating-coated or ceramic balls can prevent electrolytic corrosion. Ceramic balls are lighter than steel balls, so the effect of centrifugal force is reduced even at high speeds.

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

About Deep Groove Ball Bearings and all products

Description

Double-row deep groove ball bearing series with outer diameter of 30 to 160 mm and width of 14 to 51 mm. Cage specification indicated by model number suffix ATN9. Includes reference speed, limiting speed, calculation factor f0, and mounting dimensions.

Features

  • High load capacity with double-row construction
  • ATN9 cage specification

FAQ

Q. What are the bore diameter, outer diameter, and width ranges for the Double-Row Deep Groove Ball Bearing ATN9?
A. Bore diameter d is 10 to 90 mm, outer diameter D is 30 to 160 mm, and width B is 14 to 51 mm.
Q. What are the basic dynamic load rating and basic static load rating of the Double-Row Deep Groove Ball Bearing ATN9?
A. The basic dynamic load rating Cr is 9.23 to 138 kN, and the basic static load rating C0r is 5.2 to 125 kN.
Q. What types of loads does the Double-Row Deep Groove Ball Bearing ATN9 support?
A. It has a high load capacity and supports radial loads as well as loads in both axial directions.
Q. What are the features and cage specification of the Double-Row Deep Groove Ball Bearing ATN9?
A. It features a double-row construction with high load capacity, and the model number suffix ATN9 indicates the cage specification.
Q. What technical data can be found in the catalog for the Double-Row Deep Groove Ball Bearing ATN9?
A. The catalog lists reference speed, limiting speed, calculation factor f0, and mounting dimensions.

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

Source documents

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