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Metric A-type Thin-wall Angular Contact Ball Bearings

Metric A-type Thin-wall Angular Contact Ball Bearings, featuring 0.6-1.2mm ultra-thin rings for 52% weight reduction, support 15°, 25° contact angles with axial load capacity ranging from 4.2kN to 16.8kN.these bearings are ideal for high-accuracy applications in semiconductor, medical, and other advanced industries.

Metric A-type Thin-wall Angular Contact Ball Bearings
Metric A-type Thin-wall Angular Contact Ball Bearings
  Type Main dimensions Rated load Rated speed
      Dynamics Static Speed limit
Mail   d[mm] D[mm] B[mm] C[kN] C0[kN] [r/min]
LK09008AR0 90 106 8 505.0 1137.0 -
LK08008AR0 80 96 8 470.0 1006.0 -
LK07008AR0 70 86 8 440.0 896.0 -
LK06008AR0 60 76 8 408.0 787.0 -
LK05008AR0 50 66 8 367.0 656.0 -
LK02508AR0 25 41 8 272.0 372.0 -
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Dentail

Key Technological Advancements

  1. Ultra-thin Ring Manufacturing
    • 0.6-1.2mm wall thickness (diameter ratio <0.025) reduces weight by 52% vs. traditional bearings
    • CNC precision grinding ensures raceway surface roughness Ra≤0.1μm
  2. Modular Contact Angle System
    • Standard angles α=15°/25°/40° available, axial load capacity C_a=4.2-16.8kN
    • Optimized stress distribution extends contact fatigue life by 40% under P_r=12kN
  3. Metric Precision Standard
    • Full compliance with ISO 492:2018 (bore d=12-80mm, OD D=28-120mm)
    • P5-class rotational accuracy (GB/T 307.1) with radial runout ≤3μm
Application
The bearings can be used in the following industries
  • Semiconductor: Lithography lens supports (radial runout ≤0.5μm)
  • Medical Imaging: MRI gradient coil rotors (30,000+ hours service life)
  • Precision Drives: High-speed centrifuge spindles (45,000rpm operation)
  • Aerospace: Micro-turbine engine bearings (-60℃~+180℃ temperature range)
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