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)

• 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.