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Single-Row Deep Groove Ball Bearing with Snap Ring Groove

205～220 系・305～318 系 (Z・2Z 付き) / SKF (Official website) / Listed on page 119 of the document

Single-row deep groove ball bearing with snap ring groove, bore diameter 25 to 100 mm. Available in open and shielded (Z, 2Z) types, with a groove for a snap ring.

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Single-Row Deep Groove Ball Bearing with Snap Ring Groove on page 119 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 119
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Specifications

Inner diameter d 25～100 mm
Outer diameter D 62～180 mm
Width B 16～43 mm
Basic dynamic load rating Cr 20.9～157 kN
Basic static load rating C0r 15.6～160 kN

How to choose Deep Groove Ball Bearings

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

  1. 1. Main dimensions to suit shaft and housing

    This product: Inner diameter d 25～100 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 20.9～157 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 15.6～160 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

Covers nominal numbers with differing outer diameter and width by series, within a bore diameter range of 25 to 100 mm. For each size, basic load rating, limiting speed, mass and mounting dimensions are listed. The double-shielded (2Z) type has a limiting speed of approximately 80% of the stated value.

Features

  • Snap ring groove allows axial positioning with a snap ring
  • Selectable open type (no suffix) or shielded type (Z, 2Z)
  • Nominal numbers unified by series

Applications

  • Industrial machinery
  • General equipment

FAQ

Q. What are the bore, outer diameter and width ranges for the 205 to 220 and 305 to 318 series of single-row deep groove ball bearings with snap ring groove?
A. Bore diameter d is 25 to 100 mm, outer diameter D is 62 to 180 mm, and width B is 16 to 43 mm. Nominal numbers with differing outer diameter and width by series are included.
Q. What seal types are available for single-row deep groove ball bearings with snap ring groove?
A. Open type (no suffix) and shielded types with Z and 2Z are available. The double-shielded (2Z) type has a limiting speed of approximately 80% of the stated value.
Q. How can single-row deep groove ball bearings with snap ring groove be positioned using a snap ring?
A. Because of the snap ring groove, axial positioning is possible using a snap ring.
Q. What are the basic dynamic and basic static load ratings of SKF single-row deep groove ball bearings with snap ring groove?
A. Basic dynamic load rating Cr is 20.9 to 157 kN, and basic static load rating C0r is 15.6 to 160 kN. Values for each size are listed in the product information table.

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

Source documents

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