• 0.7938mm Miniature Bearing Steel Ball

    2016-10-31


    1) Materials: Chrome steel (Gcr15, SUJ-2, AISI5100, 100Cr6)
    2) Diameters: 0.7938mm (or 0.8mm)
    3) Grades: G5, G10, G20
    4) Hardness: HRC62-65
    5) Certificate: ISO9001:2008, ISO14001:2004, ISO/TS16949:2009, RoHS, SGS,...
    6) Surface feature: Polish, cleanness
    7) Key Features: Perfect surface, excellent precision, good roundness and roughness, good hardness, etc.
    8) Application: 0.7938mm Miniature Bearing Steel Balls are mainly used in low noise bearing, precision ball bearings, ball screw, linear motion guide, automotive parts, chemical, food processing, ink and paint grinding, caster wheel, slide rail bicycle and car, electronic components etc.

    Chemical Composition%（AISI 52100 ）

    C 0.90 - 1.10
    Si 0.15 - 0.35
    Mn 0.25 - 0.45
    P 0.025MAX
    S 0.025MAX
    Cr 1.30 - 1.60

    Grade Variation of Ball Diameter
    VDWS    		 Deviation from Spherical Form
    ΔSph    		 Variation of Ball Lot Diameter
    VDWL     		Surface roughness
    Ra
    5 0.13 0.13 0.25 0.014
    10 0.25 0.25 0.5 0.02
    16 0.4 0.4 0.8 0.025
    20 0.5 0.5 1 0.032
    24 0.6 0.6 1.2 0.04
    28 0.7 0.7 1.4 0.05
    40 1 1 2 0.06
    60 1.5 1.5 3 0.08
    100 2.5 2.5 5 0.1
    200 5 5 10 0.15
    500 12.5 12.5 25
    1000 25 25 50



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