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Thrust Cylindrical Roller Bearing 893 Series and 894 Series

893, 894 / SKF (Official website)

Double-direction thrust cylindrical roller bearing of double-row design that accommodates axial loads in both directions. Dimension range d 30 to 120 mm, with high load capacity.

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Specifications

Inner diameter 30 to 120 mm
Basic dynamic load rating (representative example 89306TN) 18.3 kN
Basic static load rating (representative example 89306TN) 52 kN
Rated rotational speed (representative example 89306TN) 2600 r/min
Limiting speed (typical example 89306TN) 5300 r/min

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Thrust Cylindrical Roller Bearing 893 Series and 894 Series).

  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

Double-row design that can carry greater loads than single-row type. Depending on the type of center race, it is either shaft-guided or housing-guided. Radial loads must never be applied. Manufactured to normal tolerance.

Features

  • High load capacity due to double-row design
  • Bearing and components can be mounted separately
  • Crowned rolling surface reduces peak stress at roller ends
  • Thermal stability up to 120°C

Applications

  • Machine components subject to axial loads in both directions
  • Applications subject to shock loads

FAQ

Q. Can the 893 Series and 894 Series thrust cylindrical roller bearings take axial loads in both directions?
A. Yes. The 893 Series and 894 Series are double-row thrust cylindrical roller bearings that can accommodate axial loads in both directions. They can also be used in applications subject to shock loads.
Q. Can radial loads be applied to the 893 Series and 894 Series thrust cylindrical roller bearings?
A. Radial loads must never be applied.
Q. What are the dimension range, basic load ratings, and speed ratings of the 893 Series and 894 Series?
A. The bore diameter ranges from 30 to 120 mm. As a representative example, the 89306TN has a basic dynamic load rating of 18.3 kN, a basic static load rating of 52 kN, a reference speed of 2600 r/min, and a limiting speed of 5300 r/min.
Q. What are the features and operating temperature of the 893 Series and 894 Series thrust cylindrical roller bearings?
A. The double-row design can carry greater loads than single-row type, and the crowned rolling surface reduces peak stress at roller ends. The bearing and components can be mounted separately. Thermal stability is maintained up to 120°C.

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

Source documents

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