Designations System

The method of bearing designation for angular contact ball bearings typically consists of three parts: prefix, basic code, and suffix. Here’s an explanation of the designation method used by BRZB:

Basic Code:
The basic code follows the same format as other bearings. It consists of a type of code at the beginning, followed by size (wih6h series), and then the inner diameter series.
  • Suffix:

    Contact Angle Codes: C=15°, AC=25°, A=30°, B=40°.

  • Cage Material Codes:

    F: Steel, nodular cast iron, or powder metallurgy solid cage.

    Q: Bronze solid cage.

    M: Brass solid cage.

    L: Light alloy solid cage.

    TH: Glass fiber reinforced.

    TN: Engineering plastic injection-molded cage.

    J: Steel plate stamped cage.

    Y: Copper plate stamped cage.

    ZA: Zinc-aluminum alloy cage.

  • Cage Structure Type:

    H: Self-locking pocket-type cage.

    A: Outer ring guided.

    B: Inner ring guided.

  • Pairing Method:

    D: Two sets of bearing pairs.

    T: Three sets of bearing pairs.

    Q: Four sets of bearing pairs.

    P: Five sets of bearing pairs.

    S: Six sets of bearing pairs.

  • Arrangement of Bearings in Configuration:

    B: Back-to-back arrangement.

    F: Face-to-face arrangement.

    T: Tandem arrangement.

    G: Universal matching.

    BT: Back-to-back tandem arrangement.

    FT: Face-to-face and tandem arrangement.

    BC: Paired back-to-back tandem arrangement.

    FC: Paired face-to-face tandem arrangement.

  • Axial Clearance, Preload, and Axial Load Distribution Codes:

    GA: Light preload, with a small preload value.

    GB: Medium preload, with a preload value greater than GA.

    GC: Heavy preload, with a preload value greater than GB.

    Gxxx: Special preload with a preload value of XXX.

    CA: Smaller axial clearance.

    CB: Axial clearance greater than CA.

    CC: Axial clearance greater than CB.

  • Vibration Level Codes:

    Z1, Z2, Z3: Acceleration vibration levels.

    V1, V2, V3: Velocity vibration levels.

  • Seal Codes:

    RZ: Non-contact rubber seal.

    RS: Contact rubber seal.

  • Rolling Element Material Codes:

    HQ1: Ceramic balls.

    S: Stainless steel.

Please note that bearing designation methods may vary from country to country, and the above explanation is specific to the BRZB designation method for angular contact ball bearings.

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