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SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem)

組み合わせ軸受 / SKF (Official website)

Matched tapered roller bearing set supplied with a spacer ring. Available in face-to-face, back-to-back, and tandem arrangements.

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

Specifications

Assembled width tolerance Special
Standard Internal Clearance Inner Diameter 30–40 mm Series 320 (Min/Max) 100～140 μm

How to choose Tapered Roller Bearings

Points to check when selecting, with the values for this product (SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem)).

  1. 1. Dimension series matching shaft and housing

    Bore d matches the shaft diameter and outside diameter D matches the housing bore. Tapered roller bearings come in metric and inch series, and bearings of similar size are not interchangeable. When replacing bearings in existing machinery, confirm the series of the boundary dimension designation, and check inner ring width B and outer ring width C against the step dimensions of the mounting section.

  2. 2. Managing preload with assembled width T and tolerance

    Width T is the overall width of the inner and outer rings when assembled, and it affects axial mounting dimensions and the adjustment amount for preload or clearance. The assembled width tolerance class changes the effort required for adjustment, so when used in pairs, confirm T and its tolerance class.

  3. 3. Estimating life with basic dynamic load rating

    Basic dynamic load rating Cr is the basis for life calculation. From radial and axial loads, the dynamic equivalent load is obtained using factor e and load factor Y1, and rated life is calculated from the ratio to Cr. The listed Cr values range from 9.5 kN to several tens of thousands of kN and vary greatly with the number of rows.

  4. 4. Checking shock and low-speed use with static load rating

    For applications with stationary operation, very low speed, or shock loads, check the margin against permanent deformation using the ratio of basic static load rating C0r to the static equivalent load (calculated with Y0). For heavy-duty rolling mills and similar uses, secure capacity with double-row or four-row types.

  5. 5. Determining shaft support by load action point position

    Tapered roller bearings have load action points located away from the end face, and the span between supports changes depending on back-to-back or face-to-face arrangement. Use the load action point position a for calculating shaft deflection and reaction forces, and determine the mounting direction accordingly.

  6. 6. Matching rotational speed and lubrication method

    The permissible rotational speed is set higher for oil lubrication than for grease lubrication. Confirm that the operating speed is within the value for each lubrication method. For differentials and other applications where energy saving is required, low-torque types showing the friction torque reduction rate are also candidates.

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

About Tapered Roller Bearings and all products

Description

Used when a single bearing lacks sufficient load capacity, or when the shaft must be located against axial loads in both directions. Radial load is evenly distributed between the bearings.

Features

  • Face-to-face, back-to-back, and tandem arrangements
  • Supplied as a set with spacer ring
  • Even distribution of radial load

Applications

  • Increasing load capacity
  • Axial location in both directions

FAQ

Q. When should SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem) be used?
A. They should be used when a single bearing lacks sufficient load capacity, or when the shaft must be located against axial loads in both directions.
Q. What arrangements are available for SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem)?
A. Face-to-face, back-to-back, and tandem arrangements are available.
Q. How is radial load distributed in SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem)?
A. Radial load is evenly distributed between the bearings.
Q. Are SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem) supplied with a spacer ring?
A. They are matched tapered roller bearing sets supplied with a spacer ring.
Q. What is the standard internal clearance of SKF Matched Tapered Roller Bearings (Face-to-Face, Back-to-Back, Tandem)?
A. For bore diameter 30 to 40 mm, series 320, the standard internal clearance (minimum/maximum) is 100 to 140 μm.

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

Source documents

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