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Sealed Spherical Roller Bearings (d 220～400mm)

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

Large sealed spherical roller bearings with bore diameters of 220～400mm. Sealed construction suited to large machinery.

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

Specifications

Inner diameter d 220～400 mm
Outer diameter D 300～650 mm
Width B 60～200 mm
Basic dynamic load rating Cr 630～4650 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) This product 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) 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 220～400mm)).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 220～400 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 630～4650 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 large sealed spherical roller bearings with bore diameters of 220～400mm. Available with cylindrical and tapered bores.

Features

  • Sealed on both sides
  • Choice of cylindrical or tapered bore

Applications

  • Large machinery
  • Applications requiring sealing

FAQ

Q. What are the bore diameter, outside diameter, and width ranges for sealed spherical roller bearings (d 220～400mm)?
A. Bore diameter d is 220～400 mm, outside diameter D is 300～650 mm, and width B is 60～200 mm.
Q. Are sealed spherical roller bearings (d 220～400mm) available with different bore types?
A. Yes, both cylindrical and tapered bore types are available.
Q. What applications are sealed spherical roller bearings (d 220～400mm) suited for?
A. They are suited to large machinery and applications requiring sealing. They are sealed on both sides.
Q. What is the range of basic dynamic load rating Cr for sealed spherical roller bearings (d 220～400mm)?
A. The basic dynamic load rating Cr is 630～4650 kN.

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

Source documents

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