LOGO
Inquiry
Precision-Milled Alumina Bearing Balls
5mm 99% Alumina Ceramic Ball Bearing
Industrial Use Alumina Ball in Ceramic Housing
Multiple Size Options Alumina Ceramic Balls

High-Temperature Alumina Ceramic Bearing Balls for Industrial Bearings and Drives

Alumina ball bearings from ADCERAX are precision Al₂O₃ ceramic balls supplied as loose bearing balls or assembled rolling elements for pumps, valves, flowmeters and industrial bearings, available in diameters from approx. 0.5–30 mm with both standard grades and fully custom sizes.

Catalog No. AT-AB-ZC694CE
Material ≥ 96% Al2O3
Diameter Tolerance ±0.02 mm
Electrical Insulation >15 kV/mm
Maximum operating temperature up to ~1600°C continuous,
higher short-term
24H Standard Dispatch
Small Batch Support OEM
Factory Direct
Expert Engineering Support
Quick Quote Now

Alumina ceramic balls are dense spherical components made from sintered aluminum oxide (Al₂O₃), valued for their high hardness, wear resistance and chemical stability. They are produced by pressing fine alumina powder into spheres—via isostatic pressing, granulation or molding—and sintering them at high temperature to achieve a strong, uniform microstructure.

Alumina Ball Bearings Benefits

  • Precision grades for bearing use
    Alumina bearing balls can be manufactured to typical bearing grades such as G10–G40, supporting low run-out and stable rotational accuracy in full and hybrid ceramic bearings.

  • Wear and corrosion resistance in aggressive media
    Alumina balls resist abrasion and most corrosive media, including many acids, salts and solvents, which makes them suitable as rolling elements in chemical pumps, down-hole pumps and valves where metallic balls suffer from rapid wear.

  • High-temperature bearing operation
    With useful temperatures reported up to around 1600–1750°C, alumina ball bearings maintain mechanical strength and dimensional stability in high-temperature equipment and hot gases where steel balls soften or oxidize.

  • Electrical insulation and non-magnetic behaviour
    Alumina ceramics provide excellent electrical insulation and are non-magnetic, allowing alumina bearing balls to be used in electrically insulated bearings for motors, instruments and sensors, where eddy currents and magnetic interference need to be avoided.

  • Low density compared with steel
    The moderate density of alumina reduces centrifugal forces at high speed compared with steel, helping to limit contact stress and bearing heating in high-speed or intermittent duty cycles.

 

Alumina Ball Bearings Properties

Property Unit 99.5% Al₂O₃ 99.6% Al₂O₃ 99.7% Al₂O₃ 99.8% Al₂O₃ 99.9% Al₂O₃ 99.99% Al₂O₃
Alumina content % 99.5 99.6 99.7 99.8 99.9 99.99
Density g/cm³ 3.89 3.91 3.92 3.93 3.94 3.98
Open porosity % 0 – – – – –
Color – Ivory Ivory Ivory Ivory Ivory Ivory
Water absorption % – 0 0 0 0 0
Young’s modulus (Elastic modulus) GPa 375 356 357 358 359 362
Shear modulus GPa 152 – – – – –
Bulk modulus GPa 228 – – – – –
Poisson’s ratio – 0.22 – – – – –
Compressive strength MPa 2600 2552 2554 2556 2558 2570
Flexural strength MPa 379 312 313 314 315 320
Fracture toughness MPa·m¹ᐟ² 4 – – – – –
Hardness GPa 14.1 (≈1440 kg/mm²) 23 24 25 26 30
Thermal conductivity W/m·K 35 32–37 33–38 34–39 35–40 36–42
Thermal shock resistance ΔT °C – 222 223 224 225 228
Maximum use temperature (no load) °C ≤1750 1755 1760 1765 1770 1800
Coefficient of thermal expansion 10⁻⁶/°C 8.4 – – – – –
Specific heat J/kg·K 880 – – – – –
Volume resistivity Ω·cm >1×10¹⁴ >1×10¹⁴ >1×10¹⁴ >1×10¹⁴ >1×10¹⁴ >1×10¹⁴
Dielectric constant (relative permittivity) – 9.8 9.83 9.84 9.85 9.86 9.92
Dielectric strength kV/mm 16.9 23.2 23.4 23.6 23.8 24
Dissipation factor (loss factor @ 1 kHz) – 0.0002 – – – – –

 

Alumina Ceramic Ball Bearings Specifications

size

 

Alumina Bearing
Item NO. Model Product Size （mm） r (Min) Install Size (mm)
d（Inner Dia) D（Outer Dia） B（Height） da (Min) Max Max Max
AT-AB-ZC684CE 684CE 4 9 2.5 0.1 4.8 / 8.2 0.1
AT-AB-ZC694CE 694CE 4 11 4 0.15 5.2 / 9.8 0.15
AT-AB-ZC604CE 604CE 4 12 4 0.2 5.6 / 10.4 0.2
AT-AB-ZC624CE 624CE 4 13 5 0.2 5.6 / 11.4 0.2
AT-AB-ZC634CE 634CE 4 16 5 0.3 6 / 14 0.3
AT-AB-ZC685CE 685CE 5 11 3 0.15 6.2 / 9.8 0.15
AT-AB-ZC695CE 695CE 5 13 4 0.2 6.6 / 11.4 0.2
AT-AB-ZC605CE 605CE 5 14 5 0.2 6.6 / 12.4 0.2
AT-AB-ZC625CE 625CE 5 16 5 0.3 7 / 14 0.3
AT-AB-ZC635CE 635CE 5 19 6 0.3 7 / 17 0.3
AT-AB-ZC686CE 686CE 6 13 3.5 0.15 7.2 / 11.8 0.15
AT-AB-ZC696CE 696CE 7 15 5 0.2 7.6 / 13.4 0.2
AT-AB-ZC606CE 606CE 8 17 6 0.3 8 / 15 0.3
AT-AB-ZC626CE 626CE 9 19 6 0.3 8 / 17 0.3
AT-AB-ZC636CE 636CE 10 22 7 0.3 8 / 20 0.3
AT-AB-ZC687CE 687CE 7 14 3.5 0.15 8.2 / 12.8 0.15
AT-AB-ZC697CE 697CE 7 17 5 0.3 9 / 15 0.3
AT-AB-ZC607CE 607CE 7 19 6 0.3 9 / 17 0.3
AT-AB-ZC627CE 627CE 7 22 7 0.3 9 / 20 0.3
AT-AB-ZC637CE 637CE 7 26 9 0.3 9 / 24 0.3
AT-AB-ZC688CE 688CE 8 16 4 0.2 9.6 / 14.4 0.2
AT-AB-ZC698CE 698CE 8 19 6 0.3 10 / 17 0.3
AT-AB-ZC608CE 608CE 8 22 7 0.3 10 / 20 0.3
AT-AB-ZC628CE 628CE 8 24 8 0.3 10 / 22 0.3
AT-AB-ZC638CE 638CE 8 28 9 0.3 10 / 26 0.3
AT-AB-ZC689CE 689CE 9 17 4 0.2 10.6 / 15.4 0.2
AT-AB-ZC699CE 699CE 9 20 6 0.3 11 / 18 0.3
AT-AB-ZC609CE 609CE 9 24 7 0.3 11 / 22 0.3
AT-AB-ZC629CE 629CE 9 26 8 0.3 11 / 24 0.3
AT-AB-ZC639CE 639CE 9 30 10 0.6 13 / 26 0.6
AT-AB-ZC6800CE 6800CE 10 19 5 0.3 12 12 17 0.3
AT-AB-ZC6900CE 6900CE 10 22 6 0.3 12 12.5 20 0.3
AT-AB-ZC6000CE 6000CE 10 26 8 0.3 12 13 24 0.3
AT-AB-ZC6200CE 6200CE 10 30 9 0.6 14 16 26 0.6
AT-AB-ZC6300CE 6300CE 10 35 11 0.6 14 16.5 31 0.6
AT-AB-ZC6801CE 6801CE 12 21 5 0.3 14 14 19 0.3
AT-AB-ZC6901CE 6901CE 12 24 6 0.3 14 14.5 22 0.3
AT-AB-ZC16001CE 16001CE 12 28 7 0.3 14 / 26 0.3
AT-AB-ZC6001CE 6001CE 12 28 8 0.3 14 15.5 26 0.3
AT-AB-ZC6201CE 6201CE 12 32 10 0.6 16 17 28 0.6
AT-AB-ZC6301CE 6301CE 12 37 12 1 17 18 32 1
AT-AB-ZC6802CE 6802CE 15 24 5 0.3 17 17 22 0.3
AT-AB-ZC6902CE 6902CE 15 28 7 0.3 17 17 26 0.3
AT-AB-ZC16002CE 16002CE 15 32 8 0.3 17 / 30 0.3
AT-AB-ZC6002CE 6002CE 15 32 9 0.3 17 19 30 0.3
AT-AB-ZC6202CE 6202CE 15 35 11 0.6 19 20.5 31 0.3
AT-AB-ZC6302CE 6302CE 15 42 13 1 20 22.5 37 1
AT-AB-ZC6803CE 6803CE 17 26 5 0.3 19 19 24 0.3
AT-AB-ZC6903CE 6903CE 17 30 7 0.3 19 19.5 28 0.3
AT-AB-ZC16003CE 16003CE 17 35 8 0.3 19 / 33 0.3
AT-AB-ZC6003CE 6003CE 17 35 10 0.3 19 21.5 33 0.3
AT-AB-ZC6203CE 6203CE 17 40 12 0.6 21 23.5 36 0.6
AT-AB-ZC6303CE 6303CE 17 47 14 1 22 25.5 42 1
AT-AB-ZC6403CE 6403CE 17 62 17 1.1 23.5 / 55.5 1
AT-AB-ZC6804CE 6804CE 20 32 7 0.3 22 22.5 30 0.3
AT-AB-ZC6904CE 6904CE 20 37 9 0.3 22 24 35 0.3
AT-AB-ZC16004CE 16004CE 20 42 8 0.3 22 / 40 0.3
AT-AB-ZC6004CE 6004CE 20 42 12 0.6 24 25.5 38 0.6
AT-AB-ZC6204CE 6204CE 20 47 14 1 25 26.5 42 1
AT-AB-ZC6304CE 6304CE 20 52 15 1.1 26.5 28 45.5 1
AT-AB-ZC6404CE 6404CE 20 72 19 1.1 26.5 / 65.5 1
AT-AB-ZC6805CE 6805CE 25 37 7 0.3 27 27 35 0.3
AT-AB-ZC6905CE 6905CE 25 42 9 0.3 27 28.5 40 0.3
AT-AB-ZC16005CE 16005CE 25 47 8 0.3 27 / 45 0.3
AT-AB-ZC6005CE 6005CE 25 47 12 0.6 29 30 43 0.6
AT-AB-ZC6205CE 6205CE 25 52 15 1 30 32 47 1
AT-AB-ZC6305CE 6305CE 25 62 17 1.1 31.5 36 55.5 1
AT-AB-ZC6405CE 6405CE 25 80 21 1.5 33 / 72 1.5
AT-AB-ZC6806CE 6806CE 30 42 7 0.3 32 32 50 1
AT-AB-ZC6906CE 6906CE 30 47 9 0.3 32 34 57 1
AT-AB-ZC16006CE 16006CE 30 55 9 0.3 32 42.5 65.5 1
AT-AB-ZC6006CE 6006CE 30 55 13 1 35 36.5 53 1
AT-AB-ZC6206CE 6206CE 30 62 16 1 35 38.5 60 1
AT-AB-ZC6306CE 6306CE 30 72 19 1.1 36.5 42.5 68.5 1
AT-AB-ZC6406CE 6406CE 30 90 23 1.5 54 / 82 2
AT-AB-ZC6807CE 6807CE 35 47 7 0.3 37 37 45 0.3
AT-AB-ZC6907CE 6907CE 35 55 10 0.6 39 39 51 0.6
AT-AB-ZC16007CE 16007CE 35 62 9 0.3 37 / 60 0.3
AT-AB-ZC6007CE 6007CE 35 62 14 1 40 41.5 57 1
AT-AB-ZC6207CE 6207CE 35 72 17 1.1 41.5 44.5 65.5 1
AT-AB-ZC6307CE 6307CE 35 80 21 1.5 43 47 72 1.5
AT-AB-ZC6407CE 6407CE 35 100 25 1.5 43 / 92 1.5
AT-AB-ZC6808CE 6808CE 40 52 7 0.3 42 42 50 0.3
AT-AB-ZC6908CE 6908CE 40 62 12 0.6 44 46 58 0.6
AT-AB-ZC16008CE 16008CE 40 68 9 0.3 42 / 66 0.3
AT-AB-ZC6008CE 6008CE 40 68 15 1 45 47.5 63 1
AT-AB-ZC6208CE 6208CE 40 80 18 1.1 46.5 50.5 73.5 1
AT-AB-ZC6308CE 6308CE 40 90 23 1.5 48 53 80 1.5
AT-AB-ZC6408CE 6408CE 40 110 27 2 49 / 101 2
AT-AB-ZC6809CE 6809CE 45 58 7 0.3 47 47.5 56 0.3
AT-AB-ZC6909CE 6909CE 45 68 12 0.6 49 50 64 0.6
AT-AB-ZC16009CE 16009CE 45 75 10 0.6 49 / 71 0.6
AT-AB-ZC6009CE 6009CE 45 75 16 1 50 53.5 70 1
AT-AB-ZC6209CE 6209CE 45 85 19 1.1 51.5 55.5 78.5 1
AT-AB-ZC6309CE 6309CE 45 100 25 1.5 53 61.5 92 1.5
AT-AB-ZC6409CE 6409CE 45 120 29 2 54 / 111 2
AT-AB-ZC6810CE 6810CE 50 65 7 0.3 52 52.5 63 0.3
AT-AB-ZC6910CE 6910CE 50 72 12 0.6 54 55 68 0.6
AT-AB-ZC16010CE 16010CE 50 80 10 0.6 54 / 76 0.6
AT-AB-ZC6010CE 6010CE 50 80 16 1 55 58.5 75 1
AT-AB-ZC6210CE 6210CE 50 90 20 1.1 56.5 60 83.2 1
AT-AB-ZC6310CE 6310CE 50 110 27 2 59 68 101 2
AT-AB-ZC6410CE 6410CE 50 130 31 2.1 61 / 119 2
AT-AB-ZC6811CE 6811CE 55 72 9 0.3 57 59 70 0.3
AT-AB-ZC6911CE 6911CE 55 80 13 1 60 61.5 75 1
AT-AB-ZC16011CE 16011CE 55 90 11 0.6 59 / 86 0.6
AT-AB-ZC6011CE 6011CE 55 90 18 1.1 61.5 64 83.5 1
AT-AB-ZC6211CE 6211CE 55 100 21 1.5 63 66.5 92 1.5
AT-AB-ZC6311CE 6311CE 55 120 29 2 64 72.5 111 2
AT-AB-ZC6411CE 6411CE 55 140 33 2.1 66 / 129 2
AT-AB-ZC6812CE 6812CE 60 78 10 0.3 62 64 76 0.3
AT-AB-ZC6912CE 6912CE 60 85 13 1 65 66 80 1
AT-AB-ZC16012CE 16012CE 60 95 11 0.6 64 / 91 0.6
AT-AB-ZC6012CE 6012CE 60 95 18 1.1 66.5 69 88.5 1
AT-AB-ZC6212CE 6212CE 60 110 22 1.5 68 74.5 102 1.5
AT-AB-ZC6312CE 6312CE 60 130 31 2.1 71 79 119 2
AT-AB-ZC6412CE 6412CE 60 150 35 2.1 71 139 2
AT-AB-ZC6813CE 6813CE 65 85 10 0.6 69 69 81 0.6
AT-AB-ZC6913CE 6913CE 65 90 13 1 70 71.5 85 1
AT-AB-ZC16013CE 16013CE 65 100 11 0.6 69 / 96 0.6
AT-AB-ZC6013CE 6013CE 65 100 18 1.1 71.5 73 93.5 1
AT-AB-ZC6213CE 6213CE 65 120 23 1.5 73 80 112 1.5
AT-AB-ZC6313CE 6313CE 65 140 33 2.1 76 85.5 129 2
AT-AB-ZC6814CE 6814CE 70 90 10 0.6 74 74.5 86 0.6
AT-AB-ZC6914CE 6914CE 70 100 16 1 75 77.5 95 1
AT-AB-ZC16014CE 16014CE 70 110 13 0.6 74 / 106 0.6
AT-AB-ZC6014CE 6014CE 70 110 20 1.1 76.5 80.5 103.5 1
AT-AB-ZC6214CE 6214CE 70 125 24 1.5 78 84 117 1.5
AT-AB-ZC6314CE 6314CE 70 150 35 2.1 81 92 139 2
AT-AB-ZC6815CE 6815CE 75 95 10 0.6 79 79.5 91 0.6
AT-AB-ZC6915CE 6915CE 75 105 16 1 80 82 100 1
AT-AB-ZC16015CE 16015CE 75 115 13 0.6 79 / 111 0.6
AT-AB-ZC6015CE 6015CE 75 115 20 1.1 81.5 85.5 108.5 1
AT-AB-ZC6215CE 6215CE 75 130 25 1.5 83 90 122 1.5
AT-AB-ZC6816CE 6816CE 80 100 10 0.6 84 84.5 96 0.6
AT-AB-ZC6916CE 6916CE 80 110 16 1 85 87.5 105 1
AT-AB-ZC16016CE 16016CE 80 125 14 0.6 84 / 121 0.6
AT-AB-ZC6016CE 6016CE 80 125 22 1.1 86.5 91 118.5 1
AT-AB-ZC6216CE 6216CE 80 140 26 2 89 95.5 131 2
AT-AB-ZC6817CE 6817CE 85 110 13 1 90 90.5 105 1
AT-AB-ZC6917CE 6917CE 85 120 18 1.1 91.5 94.5 113.5 1
AT-AB-ZC16017CE 16017CE 85 130 14 0.6 89 / 126 0.6
AT-AB-ZC6017CE 6017CE 85 130 22 1.1 91.5 96 123.5 1
AT-AB-ZC6217CE 6217CE 85 150 28 2 94 102 141 2
AT-AB-ZC6818CE 6818CE 90 115 13 1 95 95.5 110 1
AT-AB-ZC6918CE 6918CE 90 125 18 1.1 96.5 98.5 118.5 1
AT-AB-ZC16018CE 16018CE 90 140 16 1 95 / 135 1
AT-AB-ZC6018CE 6018CE 90 140 24 1.5 98 103 132 1.5
AT-AB-ZC6819CE 6819CE 95 120 13 1 100 102 115 1
AT-AB-ZC6919CE 6919CE 95 130 18 1.1 101.5 104 123.5 1
AT-AB-ZC16019CE 16019CE 95 145 16 1 100 / 140 1
AT-AB-ZC6019CE 6019CE 95 145 24 1.5 103 109 137 1.5
AT-AB-ZC6820CE 6820CE 100 125 13 1 105 106 120 1
AT-AB-ZC6920CE 6920CE 100 140 20 1.1 106.5 111 133.5 1
AT-AB-ZC16020CE 16020CE 100 150 16 1 105 / 145 1
AT-AB-ZC6020CE 6020CE 100 150 24 1.5 108 113 142 1.5
AT-AB-ZC6821CE 6821CE 105 130 13 1 110 111 125 1
AT-AB-ZC6921CE 6921CE 105 145 20 1.1 111.5 116 138.5 1
AT-AB-ZC6822CE 6822CE 110 140 16 1 115 117 135 1
AT-AB-ZC6922CE 6922CE 110 150 20 1.1 116.5 121 143.5 1
AT-AB-ZC6824CE 6824CE 120 150 16 1 125 127 145 1
AT-AB-ZC6924 6924 120 165 22 1.1 / / / /
AT-AB-ZC16024 16024 120 180 19 1 / / / /
AT-AB-ZC6024 6024 120 180 28 2 / / / /
AT-AB-ZC6224 6224 120 215 40 2.1 / / / /
AT-AB-ZC6324 6324 120 260 55 3 / / / /
AT-AB-ZC6826 6826 130 165 18 1.1 / / / /
AT-AB-ZC6926 6926 130 180 24 1.5 / / / /
AT-AB-ZC16026 16026 130 200 22 1.1 / / / /
AT-AB-ZC6026 6026 130 200 33 2 / / / /
AT-AB-ZC6226 6226 130 230 40 3 / / / /
AT-AB-ZC6326 6326 130 280 58 4 / / / /
AT-AB-ZC6828 6828 140 175 18 1.1 / / / /
AT-AB-ZC6928 6928 140 190 24 1.5 / / / /
AT-AB-ZC16028 16028 140 210 22 1.1 / / / /
AT-AB-ZC6028 6028 140 210 33 2 / / / /
AT-AB-ZC6228 6228 140 250 42 3 / / / /
AT-AB-ZC6328 6328 140 300 62 4 / / / /
AT-AB-ZC6830 6830 150 190 20 1.1 / / / /
AT-AB-ZC6930 6930 150 210 28 2 / / / /
AT-AB-ZC16030 16030 150 225 24 1.1 / / / /
AT-AB-ZC6030 6030 150 225 35 2.1 / / / /
AT-AB-ZC6230 6230 150 270 45 3 / / / /
AT-AB-ZC6330 6330 150 320 65 4 / / / /
AT-AB-ZC60/22 60/22 22 44 12 0.6 / / / /
AT-AB-ZC62/22 62/22 22 50 14 1 / / / /
AT-AB-ZC63/22 63/22 22 56 16 1.1 / / / /
AT-AB-ZC60/28 60/28 28 52 12 0.6 / / / /
AT-AB-ZC62/28 62/28 28 58 16 1 / / / /
AT-AB-ZC63/28 63/28 28 68 18 1.1 / / / /
AT-AB-ZC60/32 60/32 33 58 13 1 / / / /
AT-AB-ZC62/32 62/32 33 65 17 1 / / / /
AT-AB-ZC63/32 63/32 33 75 20 1.1 / / / /
AT-AB-ZC603CE 603CE 3 9 3 / / / / /
AT-AB-ZC606CE 606CE 6 17 6 / / / / /
AT-AB-ZCMR117 MR117 7 11 3 / / / / /
AT-AB-ZCMR128 MR128 8 12 3.5 / / / / /
AT-AB-ZCMR85 MR85 5 8 2.5 / / / / /
AT-AB-ZCMR63-1 MR63-1 3 6 2.5 / / / / /
AT-AB-ZCMR85-1 MR85-1 5 8 2 / / / / /
AT-AB-ZCMR148 MR148 8 14 4 / / / / /
AT-AB-ZCMR84 MR84 4 8 2 / / / / /
AT-AB-ZCMR126 MR126 6 12 4 / / / / /
AT-AB-ZCMR74-1 MR74-1 4 7 2 / / / / /
AT-AB-ZCMR84-1 MR84-1 4 8 3 / / / / /
AT-AB-ZCMR74 MR74 4 7 2.5 / / / / /
AT-AB-ZCMR148 MR148 8 14 3.5 / / / / /
AT-AB-ZCMR63 MR63 3 6 2 / / / / /
AT-AB-ZCMR103 MR103 3 10 4 / / / / /
AT-AB-ZCMR104 MR104 4 10 4 / / / / /
AT-AB-ZCMR105 MR105 5 10 3 / / / / /
AT-AB-ZCMR105-1 MR105-1 5 10 4 / / / / /
AT-AB-ZCMR106 MR106 6 10 2.5 / / / / /
AT-AB-ZCMR106-1 MR106-1 6 10 3 / / / / /
AT-AB-ZCMR115 MR115 5 11 4 / / / / /
AT-AB-ZCMR52 MR52 2 5 2.5 / / / / /
AT-AB-ZCMR62 MR62 2 6 2.5 / / / / /
AT-AB-ZCMR94 MR94 4 9 3 / / / / /
AT-AB-ZCMR95 MR95 5 9 3 / / / / /
AT-AB-ZCR188 R188 6.35 12.7 4.763 / / / / /
AT-AB-ZCR6 R6 9.525 22.225 5.556 / / / / /

 

size of zirconia ball bearing

Alumina Bearing
Item NO. Model Product Size （mm）
d（Inner Dia) D（Outer Dia） B（Height）
AT-AB-ZC135 135 6 19 6
AT-AB-ZC126 126 6 19 6
AT-AB-ZC127 127 7 22 7
AT-AB-ZC108 108 8 22 7
AT-AB-ZC129 129 9 26 8
AT-AB-ZC1200 1200 10 30 9
AT-AB-ZC2200 2200 10 30 14
AT-AB-ZC1300 1300 10 25 11
AT-AB-ZC2300 2300 10 25 17
AT-AB-ZC1201 1201 12 32 10
AT-AB-ZC2201 2201 12 32 14
AT-AB-ZC1301 1301 12 37 12
AT-AB-ZC2301 2301 12 37 17
AT-AB-ZC1202 1202 15 11 11
AT-AB-ZC2202 2202 15 14 14
AT-AB-ZC1302 1302 15 13 13
AT-AB-ZC2302 2302 15 17 17
AT-AB-ZC1203 1203 17 12 12
AT-AB-ZC2203 2203 17 16 16
AT-AB-ZC1303 1303 17 14 14
AT-AB-ZC2303 2303 17 19 19
AT-AB-ZC7908 7908 40 62 12
AT-AB-ZC7008 7008 40 68 15
AT-AB-ZC7208 7208 40 80 18
AT-AB-ZC7308 7308 40 90 23
AT-AB-ZC7909 7909 45 68 12
AT-AB-ZC7009 7009 45 75 16
AT-AB-ZC7209 7209 45 85 19
AT-AB-ZC7309 7309 45 100 25
AT-AB-ZC7910 7910 50 72 123
AT-AB-ZC7010 7010 50 80 16
AT-AB-ZC7210 7210 50 90 20
AT-AB-ZC7310 7310 50 110 27
AT-AB-ZC7911 7911 55 80 13
AT-AB-ZC7011 7011 55 90 18
AT-AB-ZC7211 7211 55 100 21
AT-AB-ZC7311 7311 55 120 29
AT-AB-ZC7912 7912 60 85 13
AT-AB-ZC7012 7012 60 95 18
AT-AB-ZC7212 7212 60 110 22
AT-AB-ZC7312 7312 60 130 31
AT-AB-ZC7913 7913 65 90 13
AT-AB-ZC7013 7013 65 100 18
AT-AB-ZC7213 7213 65 120 23
AT-AB-ZC7313 7313 65 140 33
AT-AB-ZC7914 7914 70 100 16
AT-AB-ZC7014 7014 70 110 20
AT-AB-ZC7214 7214 70 125 24
AT-AB-ZC7314 7314 70 150 35
AT-AB-ZC7915 7915 75 105 16
AT-AB-ZC7015 7015 75 115 20
AT-AB-ZC7215 7215 75 130 25
AT-AB-ZC7916 7916 80 110 16
AT-AB-ZC7016 7016 80 125 22
AT-AB-ZC7216 7216 80 140 26
AT-AB-ZC7017 7017 85 130 22
AT-AB-ZC7217 7217 85 150 28
AT-AB-ZC7918 7918 90 125 18
AT-AB-ZC7018 7018 90 140 24
AT-AB-ZC7919 7919 95 130 18
AT-AB-ZC7019 7019 95 145 24
AT-AB-ZC7920 7920 100 140 20
AT-AB-ZC7020 7020 100 150 24
AT-AB-ZC7921 7921 / 145 20
AT-AB-ZC7922 7922 / 150 20
AT-AB-ZC2312 2312 60 130 46
AT-AB-ZC1213 1213 65 120 23
AT-AB-ZC2213 2213 120 31
AT-AB-ZC1313 1313 14 33
AT-AB-ZC2313 2313 140 48
AT-AB-ZC1214 1214 70 125 24
AT-AB-ZC2214 2214 125 31
AT-AB-ZC1314 1314 150 35
AT-AB-ZC2314 2314 150 51
AT-AB-ZC1215 1215 75 130 25
AT-AB-ZC2215 2215 130 31
AT-AB-ZC1315 1315 160 37
AT-AB-ZC2315 2315 160 55
AT-AB-ZC1216 1216 80 140 26
AT-AB-ZC2216 2216 140 33
AT-AB-ZC1316 1316 170 39
AT-AB-ZC2316 2316 170 58
AT-AB-ZC1217 1217 85 150 28
AT-AB-ZC2217 2217 150 36
AT-AB-ZC1317 1317 180 41
AT-AB-ZC2317 2317 180 60
AT-AB-ZC1218 1218 90 160 30
AT-AB-ZC2218 2218 160 40
AT-AB-ZC1318 1318 190 43
AT-AB-ZC2318 2318 190 64
AT-AB-ZC1219 1219 95 170 32
AT-AB-ZC2219 2219 170 43
AT-AB-ZC1319 1319 200 45
AT-AB-ZC2319 2319 200 67
AT-AB-ZC1220 1220 100 180 34
AT-AB-ZC2220 2220 180 46
AT-AB-ZC1221 1221 105 190 36
AT-AB-ZC2221 2221 190 50
AT-AB-ZC1222 1222 110 200 38
AT-AB-ZC2222 2222 200 53
AT-AB-ZC1204 1204 20 47 14
AT-AB-ZC2204 2204 47 18
AT-AB-ZC1304 1304 52 15
AT-AB-ZC2304 2304 52 21
AT-AB-ZC1205 1205 25 52 15
AT-AB-ZC2205 2205 52 18
AT-AB-ZC1305 1305 62 17
AT-AB-ZC2305 2305 62 24
AT-AB-ZC1206 1206 30 62 16
AT-AB-ZC2206 2206 62 20
AT-AB-ZC1306 1306 72 19
AT-AB-ZC2306 2306 72 27
AT-AB-ZC1207 1207 35 72 17
AT-AB-ZC2207 2207 72 23
AT-AB-ZC1307 1307 80 21
AT-AB-ZC2307 2307 80 31
AT-AB-ZC1208 1208 40 80 18
AT-AB-ZC2208 2208 80 23
AT-AB-ZC1308 1308 90 23
AT-AB-ZC2308 2308 90 33
AT-AB-ZC1209 1209 45 85 19
AT-AB-ZC2209 2209 85 23
AT-AB-ZC1309 1309 100 25
AT-AB-ZC2309 2309 100 36
AT-AB-ZC1210 1210 50 90 20
AT-AB-ZC2210 2210 90 23
AT-AB-ZC1310 1310 110 27
AT-AB-ZC2310 2310 110 40
AT-AB-ZC1211 1211 55 100 21
AT-AB-ZC2211 2211 100 25
AT-AB-ZC1311 1311 120 29
AT-AB-ZC2311 2311 120 43
AT-AB-ZC1212 1212 60 110 22
AT-AB-ZC2212 2212 110 28
AT-AB-ZC1312 1312 130 31

 

Alumina Ceramic Ball Bearings Packaging

  • Alumina bearing balls are first packed in sealed inner plastic bags or vials to prevent dust contamination, then placed in small cartons with cushioning for transport.

Alumina Ceramic Ball Bearings Packaging

Alumina Ceramic Ball Bearings Applications

  1. Chemical Pumps and Process Valves Using Alumina Ball Bearings

    ✅Key Advantages

    1. Alumina ball bearings resist corrosive acids, salts and solvents, maintaining stable rolling contact in media where steel balls degrade rapidly.

    2. The balls retain dimensional accuracy above 1,000°C, supporting pump and valve motion assemblies exposed to high thermal loads.

    3. Low wear rates reduce seal abrasion and extend maintenance intervals in metering, dosing and down-hole chemical pumps.

    ✅ Problem Solved

    In chemical and dosing pumps, metallic rolling elements may reach failure within 6–12 months, causing leakage, flow-rate instability and forced shutdowns. Plants that switched to alumina ceramic bearing balls reported 2–3× longer service intervals in chloride, solvent and slurry environments. This improvement reduces spare-part consumption, stabilizes dosing accuracy and lowers unplanned downtime in continuous process lines.

  2. Industrial Bearings and Automation Drives Using Alumina Ball Bearings

    ✅Key Advantages

    1. High hardness and low contact deformation help alumina ball bearings maintain rotational accuracy under continuous high-speed duty.

    2. Electrical insulation of Al₂O₃ reduces current-induced pitting in servo motors, drives and mechatronic assemblies.

    3. Lower centrifugal load (vs. steel balls) minimizes bearing heat generation at elevated speeds in automation equipment.

    ✅ Problem Solved

    High-speed actuators and robotic joints often experience noise spike, local pitting or lubricant stress when steel balls overheat under repeated cycles. Alumina ceramic bearing balls reduce electrical pitting and improve thermal stability, leading to smoother acceleration profiles and fewer early-life bearing replacements. Automation OEMs report more consistent cycle performance, especially in 24/7 production environments.

  3. Flowmeters, Gages and Measuring Instruments Using Alumina Ball Bearings

    ✅Key Advantages

    1. Alumina bearing balls maintain roundness and low friction, ensuring stable pivot or check-ball motion essential for precise metering.

    2. Their wear-resistant surfaces preserve calibration accuracy when exposed to chemically treated water or low-abrasion particulates.

    3. Long-term dimensional stability reduces instrument drift, extending verification and recalibration intervals.

    ✅ Problem Solved

    In turbine meters, variable-area meters and sensor gages, drift often originates from gradual deformation or corrosion of the rolling element. Switching to alumina ceramic balls improves calibration retention and reduces field-service demands. Instrument manufacturers report fewer measurement deviations over extended operation, particularly in water-treatment, chemical-dosing and gas-metering systems with mixed media exposure.

Al2O3 Ceramic Ball Bearings Usage Instructions

  • Installation

    1. Verify that the mating races or seats are clean, free of burrs and dimensionally compatible with the alumina bearing balls.
    2. Avoid impact loading during assembly; use appropriate press tools and fixtures to prevent point loading or chipping of ceramic balls.
    3. When assembling hybrid bearings, confirm that inner and outer rings, cages and balls match the specified grade and clearance.

  • Operation

    1. Match alumina ball bearings with lubricants compatible with the process media and temperature; some high-temperature or clean applications may use dry running or solid lubricants.
    2. Monitor operating temperature and speed to stay within bearing design limits; while alumina tolerates high temperatures, surrounding materials such as cages and lubricants may limit the system.
    3. In corrosive or abrasive environments, define inspection intervals based on initial field experience to optimise replacement schedules.

  • Storage

    1. Store alumina bearing balls in closed containers in a dry environment to prevent dust contamination and accidental mixing of sizes or grades.
    2. Keep original labels and batch IDs visible for traceability; avoid open handling in areas with oil vapours or metal shavings.

  • Cleaning and Maintenance

    1. For cleaning, use neutral detergents or appropriate solvents that are compatible with alumina and the bearing design.
    2. Avoid strong alkaline cleaners or hydrofluoric/hydrochloric acid exposure, as alumina is not recommended for these media.
    3. Use soft brushes or ultrasonic cleaning where necessary; do not use steel tools that may chip the ceramic surface.

  • Safety and Limitations

    1. Confirm that alumina ball bearings are not used in applications where impact shock loads exceed ceramic fracture toughness; consider design changes or alternative materials in heavy impact duty.
    2. In electrical insulation applications, verify that the entire path (balls + races + lubricant) supports the desired insulation level, not just the ceramic balls themselves.

  • Typical User Questions During Use

    1. Issue: Unexpected surface chipping after installation
    Likely cause: hard impact during assembly, misalignment between races or contaminated seats.
    Mitigation: review installation tooling, use controlled pressing and verify seat geometry before replacement.

    2. Issue: Early discoloration or surface attack in chemical service
    Likely cause: exposure to unapproved media such as HF, HCl or strong alkali solutions beyond alumina’s recommended range.bocabearings.com+2ballandrollerstore.com+2
    Mitigation: confirm process chemistry, switch to suitable ceramic or adjust process to avoid these media.

    3. Issue: Noise or run-out higher than expected in prototype bearings
    Likely cause: mismatch between ball grade and raceway finish, contamination in assembly, or incorrect internal clearance.
    Mitigation: tighten cleanliness controls, match grades for balls and races, and adjust clearance or preload according to bearing design.

Alumina Ceramic Ball Bearings Reviews

  1. Q: How do alumina ceramic bearing balls compare with steel balls in service life?
    A: Due to their higher hardness and wear resistance, alumina ceramic bearing balls can significantly extend service life in abrasive or corrosive conditions, with case examples indicating lifetime improvements of 2–3 times over steel in suitable applications.
  2. Q: What temperature range can alumina ball bearings safely operate in?
    A: Industry data report maximum useful temperatures for alumina balls up to around 1600–1750°C, but the practical bearing temperature limit is usually lower, governed by cages, lubricants and surrounding components.
  3. Q: Are alumina ball bearings chemically resistant to all acids?
    A: Alumina ball bearings resist many acids, salt solutions and chemicals but are not recommended for use in hydrochloric or hydrofluoric acid or strong alkaline solutions, where chemical attack can occur over time.
  4. Q: Can alumina-bearing balls replace silicon nitride balls in every ceramic bearing?
    A: No. While alumina ball bearings offer good hardness and corrosion resistance, silicon nitride balls are often preferred for very high-speed and high-load bearings; alumina is more suitable where chemical resistance and cost balance are more important than extreme speed capability.
  5. Q: What size range is common for alumina ceramic bearing balls?
    A: Commercial alumina bearing balls are available from small sizes around a few tenths of a millimetre up to several tens of millimetres in diameter, with typical bearing applications using sizes from roughly 0.5–30 mm.
  6. Q: Are alumina ball bearings suitable for food or medical equipment?
    A: Alumina balls are used in some medical devices and can be chemically stable in hygienic environments, but each food or medical application must comply with specific regulatory and biocompatibility requirements beyond the ceramic material itself.

 

Customer Reviews – Alumina Ball Bearings

  • ⭐️⭐️⭐️⭐️⭐️
    We switched several metering pump models to alumina ball bearings and saw a clear drop in seal and seat wear. ADCERAX supplied consistent batches of alumina-bearing balls and helped us fine-tune tolerances for our pump design.
    -- Daniel K., Purchasing Manager, FlowTech Pumps GmbH
  • ⭐️⭐️⭐️⭐️⭐️
    For our chemical valve line, alumina ceramic bearing balls gave us the balance of corrosion resistance and cost we needed. The ability to order custom diameters and grades simplified our multi-size valve platform.
    -- Laura S., Engineering Director, Norvalve Process Systems
  • ⭐️⭐️⭐️⭐️⭐️
    During prototype testing of a hybrid bearing, the alumina ball bearings from ADCERAX showed stable roundness and low surface damage even after extended high-speed trials, making it easier to validate our new spindle concept.
    -- Hiroshi T., R&D Engineer, Precision Motion Co., Ltd.
  • ⭐️⭐️⭐️⭐️⭐️
    We use alumina ceramic bearing balls in several flowmeters and pressure instruments. The dimensional stability and low wear keep calibration drift under control, and repeat orders from ADCERAX have been straightforward to schedule.
    -- Miguel A., Operations Manager, Instrumentation Solutions SA
Quick Quote Now
customize size

Custom Alumina Ceramic Ball Bearings

ADCERAX supplies alumina ball bearings as standard bearing ball sizes and as drawing-based custom alumina ceramic bearing balls tailored to specific bearing designs, pump geometries and instrument housings.

1. Ball diameter range

  • Micro sizes from approx. 0.5–3 mm for miniature bearings and instruments
  • Standard sizes such as 3.175 mm, 4.763 mm, 6.35 mm, 12.7 mm and other metric/imperial diameters used in pump and bearing designs

2. Dimensional tolerance and grade

  • Bearing grades such as G10–G40 (or defined roundness tolerance in µm)
  • Diameter tolerance in the order of a few micrometres for precision bearings

3. Material purity and formulation

  • Standard high-alumina compositions around 92–95% Al₂O₃ for general industrial use
  • Higher-purity alumina (up to ~99%) for more demanding chemical and temperature environments

4. Surface finish

  • As-lapped surfaces for robust industrial applications
  • High-polish surfaces for low-friction, low-noise bearings and measuring instruments

5. Application-specific configurations

  • Loose alumina bearing balls supplied in bulk for your own bearing assembly
  • Matching bushings, seats or races in alumina or metal for full bearing sets
Start customizing today

Related Products

Not Sure Which Material Fits Your Application?

Our engineers are here to help. Upload your drawing or tell us your use case — we’ll reply within 6 hours with the best solution.
👉 Talk to Engineer

ADCERAX - Your Trusted Advanced Ceramics Manufacturing Partner

Direct factory manufacturing with comprehensive ceramic materials expertise and global supply capabilities

Direct Factory Manufacturing

China-based ceramic materials production facility with state-of-the-art equipment

Engineering Team

Experienced professionals in advanced ceramics applications and custom design

Quality Control

Strict quality control standards for technical ceramics manufacturing and quality management

Global Supply Chain

Serving customers worldwide with technical ceramics and rapid response

24/7 Technical Support

Round-the-clock support for ceramic components inquiries and technical assistance

500+ Satisfied Customers

Trusted by global customers for advanced ceramic materials and precision components

Cooperate Now

Get in touch with us

Our team will be happy to respond to you in less than 24 hours.

Adcerax's factory

Quick Quotation

*Our team will answer your inquiries within 24 hours.

*Your information will be kept strictly confidential.

Ready to Solve Your Engineering Challenge?

Partner with ADCERAX for reliable, high-performance advanced ceramic solutions. Our engineers are ready to discuss your project.

E-mail

info@adcerax.com

Phone

+(86) 0731-74427743 | WhatsApp: +(86) 19311583352

Response Time

Within 24 hours

Get a Free Project Review

About

Adcerax powers the future with precision ceramics built for innovation.

+86-0731-84428843

info@adcerax.com

Company

Quick Links

Alumina Ceramic
Zirconia Ceramic
Silicon Carbide Ceramic
Aluminium Nitride Ceramic
Boron Nitride Ceramic

Download Catalog

Advanced Ceramics Catalogue
Advanced Ceramics Catalogue

©2025 All Rights Reserved

Follow us:

Quick Quote

The more details you provide, the faster we can quote.

*We respond within 24 hours. All inquiries are confidential.

Download Catalog

Get Your Custom Sulution

The more details you provide, the faster we can respond.

customize size

*We respond within 24 hours. All inquiries are confidential.

Download Catalog