JHS Series Self-Aligning Roller Bearing

Specifications

How to choose Self-aligning ball bearings

Points to check when selecting, with the values for this product (JHS Series Self-Aligning Roller Bearing).

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

   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

Developed steel is applied to the outer ring, with fine precipitate control and high hardness improving wear resistance. The maximum rated load design, reduced contact stress, and stabilized roller orientation provide up to 1.15 times the dynamic basic load rating and up to 1.30 times the static basic load rating compared with conventional products. Bench wear tests confirmed wear resistance of 1.5 times or more compared with conventional bearings.

FAQ

Q. What applications can the JHS Series self-aligning roller bearing be used for?

A. It is used for roll support in continuous casting equipment. It is a self-aligning roller bearing that supports heavy loads.

Q. How much has the rated load of the JHS Series self-aligning roller bearing improved compared with conventional products?

A. Compared with conventional products, the dynamic basic load rating is up to 1.15 times higher and the static basic load rating is up to 1.30 times higher. These improvements result from the maximum rated load design, reduced contact stress, and stabilized roller orientation.

Q. How has the wear resistance of the JHS Series self-aligning roller bearing been improved?

A. Developed steel is applied to the outer ring, and fine precipitate control and high hardness improve wear resistance. Bench wear tests confirmed wear resistance of 1.5 times or more compared with conventional bearings. The wear depth (bench test) is 1.4 μm.

Q. What is the maximum contact stress of the JHS Series self-aligning roller bearing?

A. The maximum contact stress is 1450 MPa. Contact stress is reduced by the internal design.

Q. How is guide ring wear suppressed in the JHS Series self-aligning roller bearing?

A. Stabilizing the roller orientation reduces induced axial load and guide ring wear.

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

Source documents

• Catalog 連続鋳造設備用軸受と関連商品 Open page 2
  Found on: https://koyo.jtekt.co.jp/support/catalog-download/