Single Direction Thrust Ball Bearing

Specifications

How to choose Thrust Ball Bearings

Points to check when selecting, with the values for this product (Single Direction Thrust Ball Bearing).

1. 1. Select single or double type by load direction

   Single-direction bearings support axial load in one direction only and fix the shaft in one direction. If the load reverses in both directions, select a double-direction bearing. If the mounting surface is inclined or the shaft deflects, select a type with a self-aligning housing washer (seat washer) to reduce edge loading.

2. 2. Match shaft diameter and mounting dimensions

   This product: Inner diameter d 3–280 mm

   Select the bore d to suit the shaft diameter and the outside diameter D to suit the housing bore. The height T determines the axial installation space, so check it together with the bore and outside diameter. Listed products have bores of 3 to 280 mm and outside diameters of 8 to 380 mm.

3. 3. Check life using dynamic load rating

   This product: Basic dynamic load rating Ca 0.806–624 kN

   The basic dynamic load rating Ca is the axial load that serves as the reference for life calculation. Calculate whether the required life is met using the applied load and rotational speed. Listed products have ratings of 0.806 to 624 kN.

4. 4. Check static and shock loads using static load rating

   This product: Basic static load rating C0a 0.72–2600 kN

   For low-speed rotation or loads and shock loads applied while stationary, check that the basic static load rating C0a provides sufficient margin to prevent permanent deformation of the raceways. Listed products have ratings of 0.72 to 2600 kN.

5. 5. Check both reference and limiting speeds

   This product: Limiting speed 900–36000 r/min

   Thrust ball bearings are prone to slippage at high speeds due to centrifugal force and gyroscopic moment acting on the balls, so they are not suitable for high-speed applications. Compare the operating speed with the reference speed, which is a thermal guideline, and the limiting speed, which is the mechanical upper limit.

6. 6. Check operating temperature and cage material

   The permissible operating temperature is a guideline of 125°C for washers and balls with bores of 300 mm or less. Cages are available in steel plate, brass, resin, and other materials. Resin cages have a limited usable temperature range, so confirm the material according to temperature and lubrication conditions.

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

About Thrust Ball Bearings and all products

Description

Consists of a shaft race, housing race, and ball and cage assembly. The shaft race bore is ground and allows interference fit. The housing race bore is always larger than the shaft race bore. Radial load must not be applied. Variants with a self-aligning housing race are available and can accommodate initial misalignment.

FAQ

Q. Can SKF single direction thrust ball bearings (51100 series, BA series) be used under radial load?

A. No. These bearings must not be subjected to radial load. They are separable thrust ball bearings that accept axial load only.

Q. What should be considered when mounting the shaft race and housing race of SKF single direction thrust ball bearings?

A. The bore of the housing race is always larger than that of the shaft race. The shaft race bore is ground and allows interference fit. The shaft race, housing race, and ball and cage assembly are mounted separately.

Q. Are there products for accommodating initial misalignment during installation of SKF single direction thrust ball bearings?

A. Yes. Variants with a self-aligning housing race are available and can accommodate initial misalignment.

Q. How should the cage be selected for SKF single direction thrust ball bearings?

A. The cage is selected from steel or brass depending on the series and dimensions.

Q. What are the available dimension ranges and permissible operating temperatures for SKF single direction thrust ball bearings?

A. Bore diameter d is 3 to 280 mm and outside diameter D is 8 to 380 mm. The permissible operating temperature is 125 °C for d ≤ 300 mm and 150 °C for d > 300 mm.

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

Source documents

• Catalog 10 スラスト玉軸受 28 pages Open page 21
  Found on: https://azuma-eg.com/catalogue/