Silicon Nitride Si3N4 Ceramic Bearings Inch Sizes

Open

Seals

Full Complement

These silicon nitride bearings are available from stock in the UK without a cage (full complement) or with cages made from PEEK. We can also offer PTFE or 316 stainless steel cages. Full ceramic bearings are non-magnetic, non-conductive and extremely corrosion resistant although not suitable for shock/impact loads.

The full complement types can be used up to 800°C while PEEK cages are only rated to 250°C. PTFE and 316 stainless steel cages can handle cryogenic temperatures.

Product Number Seal Type Bore Dia
(d)
Outer Dia
(D)
Width
(B)
Dynamic
radial
(Newtons)
Static
radial
(Newtons)
Max
Speed
(X1000 RPM)
CER133SI Open 0.0938" | 2.381 mm 0.1875" | 4.763 mm 0.0625" | 1.588 mm 40.0425 12.235 66.5
CER133SIPP Sealed 0.0938" | 2.381 mm 0.1875" | 4.763 mm 0.0937" | 2.38 mm 31.145 11.1225 66.5
CER1-5SI Open 0.0938" | 2.381 mm 0.3125" | 7.938 mm 0.1094" | 2.779 mm 117.905 35.5925 49.7
CER1-5SIPP Sealed 0.0938" | 2.381 mm 0.3125" | 7.938 mm 0.1406" | 3.571 mm 117.905 35.5925 49.7
CER144SI Open 0.125" | 3.175 mm 0.25" | 6.35 mm 0.0937" | 2.38 mm 60.065 18.91 56
CER144SIPP Sealed 0.125" | 3.175 mm 0.25" | 6.35 mm 0.1094" | 2.779 mm 60.065 18.91 56
CER2-5SI Open 0.125" | 3.175 mm 0.3125" | 7.938 mm 0.1094" | 2.779 mm 119.015 35.5925 46.9
CER2-5SIPP Sealed 0.125" | 3.175 mm 0.3125" | 7.938 mm 0.1406" | 3.571 mm 119.015 35.5925 46.9
CER2-6SI Open 0.125" | 3.175 mm 0.375" | 9.525 mm 0.1094" | 2.779 mm 135.7 45.605 44.1
CER2-6SIPP Sealed 0.125" | 3.175 mm 0.375" | 9.525 mm 0.1406" | 3.571 mm 135.7 45.605 44.1
CER2SI Open 0.125" | 3.175 mm 0.375" | 9.525 mm 0.1562" | 3.967 mm 134.5875 43.38 46.9
CER2SIPP Sealed 0.125" | 3.175 mm 0.375" | 9.525 mm 0.1562" | 3.967 mm 134.5875 43.38 46.9
CER2ASI Open 0.125" | 3.175 mm 0.5" | 12.7 mm 0.1719" | 4.366 mm 135.7 45.605 44.1
CER2ASIPP Sealed 0.125" | 3.175 mm 0.5" | 12.7 mm 0.1719" | 4.366 mm 135.7 45.605 44.1
CER155SI Open 0.1563" | 3.969 mm 0.3125" | 7.938 mm 0.1094" | 2.779 mm 76.7475 30.0325 44.1
CER155SIPP Sealed 0.1563" | 3.969 mm 0.3125" | 7.938 mm 0.125" | 3.175 mm 76.7475 30.0325 44.1
CER156SI Open 0.1875" | 4.763 mm 0.3125" | 7.938 mm 0.1094" | 2.779 mm 76.7475 30.0325 44.1
CER156SIPP Sealed 0.1875" | 4.763 mm 0.3125" | 7.938 mm 0.125" | 3.175 mm 76.7475 30.0325 44.1
CER166SI Open 0.1875" | 4.763 mm 0.375" | 9.525 mm 0.125" | 3.175 mm 151.2725 54.5025 42
CER166SIPP Sealed 0.1875" | 4.763 mm 0.375" | 9.525 mm 0.125" | 3.175 mm 151.2725 54.5025 42
CER3SI Open 0.1875" | 4.763 mm 0.5" | 12.7 mm 0.1562" | 3.967 mm 276.9625 97.8825 35
CER3SIPP Sealed 0.1875" | 4.763 mm 0.5" | 12.7 mm 0.196" | 4.978 mm 276.9625 97.8825 37.1
CER3ASI Open 0.1875" | 4.763 mm 0.625" | 15.875 mm 0.196" | 4.978 mm 314.78 124.5775 31.5
CER3ASIPP Sealed 0.1875" | 4.763 mm 0.625" | 15.875 mm 0.196" | 4.978 mm 314.78 124.5775 31.5
CE1601SI Open 0.1875" | 4.763 mm 0.6875" | 17.463 mm 0.25" | 6.35 mm 150 55 4.2
CE1601SIPP Sealed 0.1875" | 4.763 mm 0.6875" | 17.463 mm 0.3125" | 7.938 mm 150 55 4.2
CER168SI Open 0.25" | 6.35 mm 0.375" | 9.525 mm 0.125" | 3.175 mm 78.9725 34.4825 39.2
CER168SIPP Sealed 0.25" | 6.35 mm 0.375" | 9.525 mm 0.125" | 3.175 mm 78.9725 34.4825 39.2
CER188SI Open 0.25" | 6.35 mm 0.5" | 12.7 mm 0.125" | 3.175 mm 230.245 88.985 35
CER188SIPP Sealed 0.25" | 6.35 mm 0.5" | 12.7 mm 0.1875" | 4.763 mm 230.245 88.985 35
CER4SI Open 0.25" | 6.35 mm 0.625" | 15.875 mm 0.196" | 4.978 mm 314.78 124.5775 31.5
CER4SIPP Sealed 0.25" | 6.35 mm 0.625" | 15.875 mm 0.196" | 4.978 mm 314.78 124.5775 31.5
CE1602SI Open 0.25" | 6.35 mm 0.6875" | 17.463 mm 0.25" | 6.35 mm 158.75 60 4.2
CE1602SIPP Sealed 0.25" | 6.35 mm 0.6875" | 17.463 mm 0.3125" | 7.938 mm 158.75 60 4.2
CER4ASI Open 0.25" | 6.35 mm 0.75" | 19.05 mm 0.2188" | 5.558 mm 496.085 179.08 30.1
CER4ASIPP Sealed 0.25" | 6.35 mm 0.75" | 19.05 mm 0.2812" | 7.142 mm 496.085 179.08 30.1
CER1810SI Open 0.3125" | 7.938 mm 0.5" | 12.7 mm 0.1562" | 3.967 mm 115.68 55.615 33.6
CER1810SIPP Sealed 0.3125" | 7.938 mm 0.5" | 12.7 mm 0.1562" | 3.967 mm 115.68 55.615 33.6
CE1603SI Open 0.3125" | 7.938 mm 0.875" | 22.225 mm 0.2812" | 7.142 mm 186.25 77.5 4.2
CE1603SIPP Sealed 0.3125" | 7.938 mm 0.875" | 22.225 mm 0.3438" | 8.733 mm 186.25 77.5 4.2
CE1605SI Open 0.3125" | 7.938 mm 0.9062" | 23.017 mm 0.3125" | 7.938 mm 186.25 78.75 4.2
CE1605SIPP Sealed 0.3125" | 7.938 mm 0.9062" | 23.017 mm 0.3125" | 7.938 mm 186.25 78.75 4.2
CER6SI Open 0.375" | 9.525 mm 0.875" | 22.225 mm 0.2188" | 5.558 mm 708.535 284.75 26.6
CER6SIPP Sealed 0.375" | 9.525 mm 0.875" | 22.225 mm 0.2812" | 7.142 mm 708.535 284.75 26.6
CE1604SI Open 0.375" | 9.525 mm 0.875" | 22.225 mm 0.2812" | 7.142 mm 187.5 80 4.2
CE1604SIPP Sealed 0.375" | 9.525 mm 0.875" | 22.225 mm 0.3438" | 8.733 mm 187.5 80 4.2
CE1606SI Open 0.375" | 9.525 mm 0.9062" | 23.017 mm 0.3125" | 7.938 mm 187.5 80 4.2
CE1606SIPP Sealed 0.375" | 9.525 mm 0.9062" | 23.017 mm 0.3125" | 7.938 mm 187.5 80 4.2
CE1614SI Open 0.375" | 9.525 mm 1.125" | 28.575 mm 0.375" | 9.525 mm 285 130 4.2
CE1614SIPP Sealed 0.375" | 9.525 mm 1.125" | 28.575 mm 0.375" | 9.525 mm 285 130 4.2
CE1607SI Open 0.4375" | 11.113 mm 0.9062" | 23.017 mm 0.3125" | 7.938 mm 253.75 107.5 4.2
CE1607SIPP Sealed 0.4375" | 11.113 mm 0.9062" | 23.017 mm 0.3125" | 7.938 mm 253.75 107.5 4.2
CE1615SI Open 0.4375" | 11.113 mm 1.125" | 28.575 mm 0.375" | 9.525 mm 286.25 132.5 4.2
CE1615SIPP Sealed 0.4375" | 11.113 mm 1.125" | 28.575 mm 0.375" | 9.525 mm 286.25 132.5 4.2
CE1620SI Open 0.4375" | 11.113 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 422.5 200 4.2
CE1620SIPP Sealed 0.4375" | 11.113 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 422.5 200 4.2
CER8SI Open 0.5" | 12.7 mm 1.125" | 28.575 mm 0.25" | 6.35 mm 287.25 127.75 22.4
CER8SIPP Sealed 0.5" | 12.7 mm 1.125" | 28.575 mm 0.3125" | 7.938 mm 287.25 127.75 22.4
CE1616SI Open 0.5" | 12.7 mm 1.125" | 28.575 mm 0.375" | 9.525 mm 287.5 112.5 4.2
CE1616SIPP Sealed 0.5" | 12.7 mm 1.125" | 28.575 mm 0.375" | 9.525 mm 287.5 112.5 4.2
CE1621SI Open 0.5" | 12.7 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 425 203.75 4.2
CE1621SIPP Sealed 0.5" | 12.7 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 425 203.75 4.2
CE1622SI Open 0.5625" | 14.288 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 427.5 206.25 4.2
CE1622SIPP Sealed 0.5625" | 14.288 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 427.5 206.25 4.2
CER10SI Open 0.625" | 15.875 mm 1.375" | 34.925 mm 0.2812" | 7.142 mm 396.25 183.75 17.5
CER10SIPP Sealed 0.625" | 15.875 mm 1.375" | 34.925 mm 0.3438" | 8.733 mm 396.25 183.75 17.5
CE1623SI Open 0.625" | 15.875 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 430 208.75 4.2
CE1623SIPP Sealed 0.625" | 15.875 mm 1.375" | 34.925 mm 0.4375" | 11.113 mm 430 208.75 4.2
CE1628SI Open 0.625" | 15.875 mm 1.625" | 41.275 mm 0.5" | 12.7 mm 525 273.75 4.2
CE1628SIPP Sealed 0.625" | 15.875 mm 1.625" | 41.275 mm 0.5" | 12.7 mm 525 273.75 4.2
CE1633SI Open 0.625" | 15.875 mm 1.75" | 44.45 mm 0.5" | 12.7 mm 525 280 4.2
CE1633SIPP Sealed 0.625" | 15.875 mm 1.75" | 44.45 mm 0.5" | 12.7 mm 525 280 4.2
CER12SI Open 0.75" | 19.05 mm 1.625" | 41.275 mm 0.3125" | 7.938 mm 619.25 294.25 14.7
CER12SIPP Sealed 0.75" | 19.05 mm 1.625" | 41.275 mm 0.4375" | 11.113 mm 619.25 294.25 14.7
CE1630SI Open 0.75" | 19.05 mm 1.625" | 41.275 mm 0.5" | 12.7 mm 527.5 278.75 4.2
CE1630SIPP Sealed 0.75" | 19.05 mm 1.625" | 41.275 mm 0.5" | 12.7 mm 527.5 278.75 4.2
CE1635SI Open 0.75" | 19.05 mm 1.75" | 44.45 mm 0.5" | 12.7 mm 528.75 285 4.2
CE1635SIPP Sealed 0.75" | 19.05 mm 1.75" | 44.45 mm 0.5" | 12.7 mm 528.75 285 4.2
CE1638SI Open 0.75" | 19.05 mm 2" | 50.8 mm 0.5625" | 14.288 mm 567.5 322.5 4.2
CE1638SIPP Sealed 0.75" | 19.05 mm 2" | 50.8 mm 0.5625" | 14.288 mm 567.5 322.5 4.2
CER14SI Open 0.875" | 22.225 mm 1.875" | 47.625 mm 0.375" | 9.525 mm 664.5 326.75 8.4
CER14SIPP Sealed 0.875" | 22.225 mm 1.875" | 47.625 mm 0.5" | 12.7 mm 664.5 326.75 8.4
CE1640SI Open 0.875" | 22.225 mm 2" | 50.8 mm 0.5625" | 14.288 mm 566.25 328.75 4.2
CE1640SIPP Sealed 0.875" | 22.225 mm 2" | 50.8 mm 0.5625" | 14.288 mm 566.25 328.75 4.2
CER16SI Open 1" | 25.4 mm 2" | 50.8 mm 0.375" | 9.525 mm 663 326.75 7.7
CER16SIPP Sealed 1" | 25.4 mm 2" | 50.8 mm 0.5" | 12.7 mm 663 326.75 7.7
CE1641SI Open 1" | 25.4 mm 2" | 50.8 mm 0.5625" | 14.288 mm 565 336.25 4.2
CE1641SIPP Sealed 1" | 25.4 mm 2" | 50.8 mm 0.5625" | 14.288 mm 565 336.25 4.2
CER18SI Open 1.125" | 28.575 mm 2.125" | 53.975 mm 0.375" | 9.525 mm 873 454.25 7
CER18SIPP Sealed 1.125" | 28.575 mm 2.125" | 53.975 mm 0.5" | 12.7 mm 873 454.25 7
CE1652SI Open 1.125" | 28.575 mm 2.5" | 63.5 mm 0.625" | 15.875 mm 900.75 570 4.2
CE1652SIPP Sealed 1.125" | 28.575 mm 2.5" | 63.5 mm 0.625" | 15.875 mm 900.75 570 4.2
CER20SI Open 1.25" | 31.75 mm 2.25" | 57.15 mm 0.375" | 9.525 mm 923.75 496.5 6.3
CER20SIPP Sealed 1.25" | 31.75 mm 2.25" | 57.15 mm 0.5" | 12.7 mm 923.75 496.5 6.3
CE1654SI Open 1.25" | 31.75 mm 2.5" | 63.5 mm 0.625" | 15.875 mm 900 575 4.2
CE1654SIPP Sealed 1.25" | 31.75 mm 2.5" | 63.5 mm 0.625" | 15.875 mm 900 575 4.2
CE1657SI Open 1.25" | 31.75 mm 2.5625" | 65.088 mm 0.6875" | 17.463 mm 1100 625 4.2
CE1657SIPP Sealed 1.25" | 31.75 mm 2.5625" | 65.088 mm 0.6875" | 17.463 mm 1100 625 4.2
CE1658SI Open 1.3125" | 33.338 mm 2.5625" | 65.088 mm 0.6875" | 17.463 mm 1092.5 650 4.2
CE1658SIPP Sealed 1.3125" | 33.338 mm 2.5625" | 65.088 mm 0.6875" | 17.463 mm 1092.5 650 4.2
CER22SI Open 1.375" | 34.925 mm 2.5" | 63.5 mm 0.4375" | 11.113 mm 1016.75 561.75 5.6
CER22SIPP Sealed 1.375" | 34.925 mm 2.5" | 63.5 mm 0.5625" | 14.288 mm 1016.75 561.75 5.6
CER24SI Open 1.5" | 38.1 mm 2.625" | 66.675 mm 0.4375" | 11.113 mm 1106.5 611.5 4.2
CER24SIPP Sealed 1.5" | 38.1 mm 2.625" | 66.675 mm 0.5625" | 14.288 mm 1106.5 611.5 4.2

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