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SKF High-Temperature Insert Bearing and Ball Bearing Unit VA228

VA228 / SKF (Official website)

High-temperature insert bearing and ball bearing unit usable up to 350°C. Designed to ISO standard dimensions for easy replacement in existing equipment.

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

Specifications

Maximum Operating Temperature 350 °C
Limiting rotational speed 9000/d (d = mean bearing diameter) r/min
Break-In Operation Not required

VA228 model comparison

Compare 2 models in the same series by specification.

Model Maximum Operating Temperature Break-In Operation
SKF高温用インサート軸受・玉軸受ユニット VA228 This product 350 °C Not required
SKF高温用深溝玉軸受 VA228 350 °C Not required

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (SKF High-Temperature Insert Bearing and Ball Bearing Unit VA228).

  1. 1. Bore and housing bore dimensions

    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

    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

Compatible with ISO standard pillow block, square flange, and diamond flange housings. Features a graphite cage, shields and flingers on both sides, and mounting via inner ring set screws.

Features

  • Graphite lubrication, no re-greasing required
  • Maximum operating temperature 350°C
  • Shields and flingers (2F)
  • Easy mounting and removal with set screws
  • High-temperature coated housing
  • Interchangeable with ISO standard dimensions

Applications

  • Steel production
  • Food and beverage processing
  • Continuous baking ovens
  • Paint line drying processes

FAQ

Q. What are the maximum operating temperature and lubrication and maintenance requirements for the SKF VA228?
A. The maximum operating temperature is 350 °C. It uses graphite lubrication, so re-greasing is not required. Running-in is also not required.
Q. What housing types is the SKF VA228 mounted in, and can it replace existing equipment?
A. It is compatible with ISO standard pillow block, square flange, and diamond flange housings. It is interchangeable with ISO standard dimensions, making it easy to replace existing equipment.
Q. What is the construction and mounting method of the SKF VA228?
A. It has a graphite cage and shields and flingers on both sides (2F). Mounting and removal are easy with inner ring set screws. The housing has a high-temperature coating.
Q. How is the limiting speed of the SKF VA228 determined?
A. The limiting speed is 9000/d (d = mean bearing diameter) r/min.
Q. What applications is the SKF VA228 suited for?
A. It can be used in applications such as steel production, food and beverage processing, continuous baking ovens, and paint line drying processes.

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

Source documents

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