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Radial Ball Bearings

Single-row Angular Contact Ball Bearings

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Single-row Angular Contact Ball Bearings

Single-row Angular Contact Ball Bearings
  • The raceways of both the inner and outer rings of this bearing type are made with a set contact angle.
  • Single-row Angular Contact ball bearings can sustain radial, axial or composite loads, however, any axial load must be in one direction.
    Larger contact angle type has better axial load capability.
    Small contact angle type has higher permissible speed capability.
  • This bearing type is generally used in adjacent positions.

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Single-row Angular Contact Ball Bearings

  • These bearings are designed with three contact angle classifications as shown in Table 1.
  • Normally, contact angle A design and B design are fitted with a cage as shown in Table 2.
  • High precision (JIS/ISO class 5 or higher) may be fitted with a machined cage of bronze or phenolic resin or a polyamide cage.
    Contact angle C design are generally applied high precision, JIS (ISO) class 5 or higher, and are fitted with a machined phenolic resin cage or a polyamide cage.

Contact Angle and Characterisics of Single-row Angular Contact Ball Bearings

Contact
Angle
Symbol
Example
Bearing
No.
Contact
Angle
(α)
Speed Load capability (*2) Cross Section
Radial Load Direction(X) Axial Load
Direction (Y)
A 7205(*1) 30° Normal Normal Normal
B 7205B 40° Low Low High
C 7205C 15° High High Low

(Note)
*1: Contact angle symbol "A" is omitted.
*2: Axial load be accommodated in one direction only.


Standard Cage Materials (For JIS / ISO class 0 or 6)


Applicable Bore Diameter Number
Pressed Steel Machined Brass
72, 72B 00 - 22 24 - 40
73, 73B 00 - 19 20 - 40

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Single-row Angular Contact Ball Bearings

NACHI High-speed Inline Center
NACHI High-speed Inline Center
  • Machine tool for High speed precision Machining (High-speed Inline Center)
  • Precision Spindle Support

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Single-row Angular Contact Ball Bearings

Dimension Table


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