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Sealed Spherical Roller Bearings (d 25～90mm)

8.2 シール付き球面ころ軸受 / SKF (Official website)

Sealed spherical roller bearings with bore diameters of 25～90mm. Sealed construction extends lubrication life for small to medium-sized applications.

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

Specifications

Inner diameter d 25～90 mm
Outer diameter D 52～160 mm
Width B 23～52 mm
Basic dynamic load rating Cr 49～355 kN

8.2 シール付き球面ころ軸受 model comparison

Compare 4 models in the same series by specification.

Model Inner diameter d Outer diameter D Width B Basic dynamic load rating Cr
シール付き球面ころ軸受 (d 150～200mm) 150～200 mm 225～360 mm 56～140 mm 510～1800 kN
シール付き球面ころ軸受 (d 220～400mm) 220～400 mm 300～650 mm 60～200 mm 630～4650 kN
シール付き球面ころ軸受 (d 25～90mm) This product 25～90 mm 52～160 mm 23～52 mm 49～355 kN
シール付き球面ころ軸受 (d 95～140mm) 95～140 mm 150～300 mm 45～102 mm 285～1290 kN

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Sealed Spherical Roller Bearings (d 25～90mm)).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 25～90 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

    This product: Basic dynamic load rating Cr 49～355 kN

    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

Dimension table for sealed spherical roller bearings with bore diameters of 25～90mm. Available with cylindrical and tapered bores.

Features

  • Sealed on both sides
  • Choice of cylindrical or tapered bore
  • Includes SKF Explorer bearings

Applications

  • General industrial machinery
  • Applications requiring sealing

FAQ

Q. What are the bore and outside diameter ranges of the sealed spherical roller bearings (d 25～90mm)?
A. The bore diameter d is 25～90 mm and the outside diameter D is 52～160 mm.
Q. Can I select the bore shape of the sealed spherical roller bearings (d 25～90mm)?
A. Cylindrical and tapered bores are available.
Q. What applications are the sealed spherical roller bearings (d 25～90mm) suited for?
A. They are suited for general industrial machinery and applications requiring sealing. The sealed construction extends lubrication life.
Q. What are the width and basic dynamic load rating of the sealed spherical roller bearings (d 25～90mm)?
A. The width B is 23～52 mm and the basic dynamic load rating Cr is 49～355 kN.
Q. What are the features of the sealed spherical roller bearings (d 25～90mm)?
A. They are sealed on both sides and available with cylindrical or tapered bores. They include SKF Explorer bearings.

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

Source documents

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