CARB Toroidal Roller Bearing

Specifications

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (CARB Toroidal Roller Bearing).

1. 1. Bore and housing bore dimensions

   This product: Inner diameter d 25〜110 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 40〜800 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

   This product: Basic static load rating C0r 49〜1000 kN

   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

   This product: Limiting speed (grease lubrication) Max. 3000 r/min

   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

   This product: Operating Temperature Range 200 °C

   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

A single-row bearing with barrel-shaped symmetrical rollers. Because the rollers are self-guiding, the load is distributed evenly along the full roller length, keeping friction and operating temperature low. Thermal expansion of the shaft and housing can be accommodated as axial displacement within the bearing, which helps simplify bearing arrangements that pair with a spherical roller bearing on the fixed side and reduces noise and vibration. Cylindrical bore or tapered bore (taper ratio 1:12 or 1:30) options are available, and product groups include basic design, sealed, and vibration-application versions. The reference misalignment is 0.5° or less.

FAQ

Q. Can the CARB Toroidal Roller Bearing (CARB) be used as either the fixed-side or free-side bearing?

A. CARB bearings are free-side bearings. They can absorb axial displacement within the bearing, and the documented bearing arrangement pairs them with a spherical roller bearing on the fixed side.

Q. What are the permissible misalignment angle, operating temperature range, and speed limit of the CARB Toroidal Roller Bearing?

A. The permissible misalignment angle is 0.5°, and the reference misalignment is 0.5° or less. The operating temperature range is 200 °C, and the limiting speed (grease lubrication) is up to 3000 r/min.

Q. What are the ranges of bore diameter, outside diameter, width, and load ratings for the CARB Toroidal Roller Bearing?

A. Bore diameter d is 25 to 110 mm, outside diameter D is 52 to 200 mm, and width B is 18 to 73 mm. Basic dynamic load rating Cr is 40 to 800 kN, and basic static load rating C0r is 49 to 1000 kN.

Q. What bore types are available for the CARB Toroidal Roller Bearing, and which product groups are offered?

A. Cylindrical bore or tapered bore options are available. The taper ratio of tapered bores is 1:12 or 1:30. Product groups include basic design, sealed, and vibration-application versions.

Q. What are the seal and lubrication conditions for the CARB Toroidal Roller Bearing?

A. The sealed type uses a double-lip HNBR seal. With grease lubrication, the limiting speed is up to 3000 r/min.

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

Source documents

• Catalog CARBトロイダルころ軸受 52 pages Open page 2
  Found on: https://azuma-eg.com/catalogue/