Sealed Spherical Roller Bearings and Adapter Sleeves

Specifications

How to choose Self-aligning ball bearings

Points to check when selecting, with the values for this product (Sealed Spherical Roller Bearings and Adapter Sleeves).

1. 1. Select size by shaft diameter and mounting space

   This product: Inner diameter d 35–380 mm

   Bore diameter d is determined by the shaft diameter, while outside diameter D and width B are determined by the housing fit. Listed products cover bore diameters of 35 to 380 mm, outside diameters of 80 to 650 mm and widths of 28 to 200 mm. Even with the same bore, outside diameter and width vary by series, so verify all three dimensions together.

2. 2. Choose dimension series for load capacity and size

   The series designation (222, 223, 230, etc.) indicates the width-to-outside-diameter ratio. In general, larger outside diameter and width series such as 223 offer higher load capacity, while narrow-width series such as 230 suit space-limited installations. Select the series based on load conditions and available mounting space.

3. 3. Verify required life using basic dynamic load rating

   The basic dynamic load rating Cr is the reference value for life calculation. For roller bearings, life is proportional to the load ratio raised to the 10/3 power. Calculate the rated life from equivalent load and rotational speed, and confirm it meets the required life. High-load design products rated at 1.15 times conventional products are candidates where longer life is needed within the same dimensions.

4. 4. Evaluate heavy loads at standstill or low speed using static load rating

   For applications such as continuous casting rolls or heavy material transfer equipment that experience large loads or shocks at low speed or under oscillation, evaluate using the static safety factor against the basic static load rating C0r. To prevent permanent deformation (indentations) of the raceways, check the ratio of maximum load to C0r.

5. 5. Match bore type to the mounting method

   Cylindrical bores are fitted to the shaft with interference fit, while tapered bores can be secured to shafts without shoulders using adapter or withdrawal sleeves. With tapered bores, internal clearance decreases as the bearing is driven onto the sleeve, so also confirm the compatible sleeve model and assembly dimensions.

6. 6. Specify internal clearance suited to operating temperature

   Clearance decreases when the inner ring runs hotter than the outer ring or when the interference fit is large. Determine whether normal clearance CN is sufficient or whether a larger clearance such as C3 is required, based on fit, temperature difference and drive-up amount for tapered bores.

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

About Self-aligning ball bearings and all products

Description

Lists main bearing dimensions, mounting-related dimensions (da, db, Ba), masses, bearing numbers, and combinations with E-type, OH-type, and H-type adapter sleeves. The bore diameter d1 of the bearings ranges from 35 to 380 mm, and the outside diameter D and width B vary depending on size.

FAQ

Q. What is the bore diameter range of sealed spherical roller bearings and adapter sleeves, and what types of adapter sleeves can be combined?

A. The bore diameter d1 ranges from 35 to 380 mm. Compatible adapter sleeves are E-type, OH-type, and H-type.

Q. What are the outside diameter D and width B ranges of SKF Explorer spherical roller bearings (sealed, adapter sleeve mounting)?

A. The outside diameter D is 80 to 650 mm and the width B is 28 to 200 mm. The outside diameter and width vary depending on size.

Q. What seal type is used in sealed spherical roller bearings, and what are the mounting-related dimensions when using adapter sleeves?

A. The seal is 2CS5K/VT143. Mounting-related dimensions da, db, and Ba are indicated.

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

Source documents

• Catalog SKF 球面ころ軸受 (製品データ表 8章抜粋) 78 pages Open page 77
  Found on: https://azuma-eg.com/catalogue/