• KOYO K-Series Super Thin Section Ball Bearings, Sealed (2RD, RD)
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KOYO K-Series Super Thin Section Ball Bearings, Sealed (2RD, RD)

KOYO K-Series Super Thin Section Ball Bearings, Sealed (2RD, RD)

Sealed K-series super thin section ball bearings with rubber seals (2RD both sides, RD one side) in deep groove (C), angular contact (A) and four-point contact (X) types, bore 101.6 to 304.8 mm.

Key features

  • Constant thin cross section
  • Rubber seals RD / 2RD
  • Pre-lubricated
  • Deep groove, angular and four-point contact types

Specifications

Bearing type Super thin section ball bearing, sealed
Series KUC..2RD, KJA..RD, KUX..2RD
Dimension system Inch (values in mm)
Source KOYO Special Bearings catalogue, p. C44-C45
KUC040 2RD d: 101.6 mm | D: 120.65 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.3 kN | Mass: 0.249 kg
KJA040 RD d: 101.6 mm | D: 120.65 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 11.2 kN | Mass: 0.222 kg
KUX040 2RD d: 101.6 mm | D: 120.65 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 8.95 kN | Mass: 0.249 kg
KUC042 2RD d: 107.95 mm | D: 127 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.5 kN | Mass: 0.263 kg
KJA042 RD d: 107.95 mm | D: 127 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 11.5 kN | Mass: 0.236 kg
KUX042 2RD d: 107.95 mm | D: 127 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.15 kN | Mass: 0.263 kg
KUC045 2RD d: 114.3 mm | D: 133.35 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.7 kN | Mass: 0.277 kg
KJA045 RD d: 114.3 mm | D: 133.35 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 11.7 kN | Mass: 0.254 kg
KUX045 2RD d: 114.3 mm | D: 133.35 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.30 kN | Mass: 0.277 kg
KUC047 2RD d: 120.65 mm | D: 139.7 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.9 kN | Mass: 0.295 kg
KJA047 RD d: 120.65 mm | D: 139.7 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.0 kN | Mass: 0.268 kg
KUX047 2RD d: 120.65 mm | D: 139.7 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.50 kN | Mass: 0.295 kg
KUC050 2RD d: 127 mm | D: 146.05 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 11.1 kN | Mass: 0.308 kg
KJA050 RD d: 127 mm | D: 146.05 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.2 kN | Mass: 0.281 kg
KUX050 2RD d: 127 mm | D: 146.05 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.65 kN | Mass: 0.308 kg
KUC055 2RD d: 139.7 mm | D: 158.75 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 11.5 kN | Mass: 0.336 kg
KJA055 RD d: 139.7 mm | D: 158.75 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.5 kN | Mass: 0.304 kg
KUX055 2RD d: 139.7 mm | D: 158.75 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.0 kN | Mass: 0.336 kg
KUC060 2RD d: 152.4 mm | D: 171.45 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 11.9 kN | Mass: 0.367 kg
KJA060 RD d: 152.4 mm | D: 171.45 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.9 kN | Mass: 0.331 kg
KUX060 2RD d: 152.4 mm | D: 171.45 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.3 kN | Mass: 0.367 kg
KUC065 2RD d: 165.1 mm | D: 184.15 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 12.2 kN | Mass: 0.395 kg
KJA065 RD d: 165.1 mm | D: 184.15 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 13.4 kN | Mass: 0.354 kg
KUX065 2RD d: 165.1 mm | D: 184.15 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.6 kN | Mass: 0.395 kg
KUC070 2RD d: 177.8 mm | D: 196.85 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 12.5 kN | Mass: 0.422 kg
KJA070 RD d: 177.8 mm | D: 196.85 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 13.6 kN | Mass: 0.381 kg
KUX070 2RD d: 177.8 mm | D: 196.85 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.9 kN | Mass: 0.422 kg
KUC075 2RD d: 190.5 mm | D: 209.55 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 12.8 kN | Mass: 0.449 kg
KJA075 RD d: 190.5 mm | D: 209.55 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 14.0 kN | Mass: 0.404 kg
KUX075 2RD d: 190.5 mm | D: 209.55 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 11.1 kN | Mass: 0.449 kg
KUC080 2RD d: 203.2 mm | D: 222.25 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 13.1 kN | Mass: 0.481 kg
KJA080 RD d: 203.2 mm | D: 222.25 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 14.4 kN | Mass: 0.431 kg
KUX080 2RD d: 203.2 mm | D: 222.25 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 11.4 kN | Mass: 0.481 kg
KUC090 2RD d: 228.6 mm | D: 247.65 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 13.7 kN | Mass: 0.535 kg
KJA090 RD d: 228.6 mm | D: 247.65 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 14.9 kN | Mass: 0.499 kg
KUX090 2RD d: 228.6 mm | D: 247.65 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 11.9 kN | Mass: 0.535 kg
KUC100 2RD d: 254 mm | D: 273.05 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 14.2 kN | Mass: 0.594 kg
KJA100 RD d: 254 mm | D: 273.05 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 15.6 kN | Mass: 0.531 kg
KUX100 2RD d: 254 mm | D: 273.05 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 12.3 kN | Mass: 0.594 kg
KUC110 2RD d: 279.4 mm | D: 298.45 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 14.7 kN | Mass: 0.649 kg
KJA110 RD d: 279.4 mm | D: 298.45 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 16.1 kN | Mass: 0.581 kg
KUX110 2RD d: 279.4 mm | D: 298.45 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 12.7 kN | Mass: 0.649 kg
KUC120 2RD d: 304.8 mm | D: 323.85 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 15.2 kN | Mass: 0.708 kg
KJA120 RD d: 304.8 mm | D: 323.85 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 16.5 kN | Mass: 0.630 kg
KUX120 2RD d: 304.8 mm | D: 323.85 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 13.1 kN | Mass: 0.708 kg
Deep Groove Ball BearingsKOYO
45 product codes available in this family
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KOYO K-Series Super Thin Section Ball Bearings, Sealed (2RD, RD)

Brand KOYO·Deep Groove Ball Bearings

Available part numbers (45)

KUC040 2RD, KJA040 RD, KUX040 2RD, KUC042 2RD, KJA042 RD, KUX042 2RD, KUC045 2RD, KJA045 RD, KUX045 2RD, KUC047 2RD + 35 more — see full table ↓

How to order

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Product codes & specifications
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Product codeSpec
KUC040 2RDd: 101.6 mm | D: 120.65 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.3 kN | Mass: 0.249 kg
KJA040 RDd: 101.6 mm | D: 120.65 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 11.2 kN | Mass: 0.222 kg
KUX040 2RDd: 101.6 mm | D: 120.65 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 8.95 kN | Mass: 0.249 kg
KUC042 2RDd: 107.95 mm | D: 127 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.5 kN | Mass: 0.263 kg
KJA042 RDd: 107.95 mm | D: 127 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 11.5 kN | Mass: 0.236 kg
KUX042 2RDd: 107.95 mm | D: 127 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.15 kN | Mass: 0.263 kg
KUC045 2RDd: 114.3 mm | D: 133.35 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.7 kN | Mass: 0.277 kg
KJA045 RDd: 114.3 mm | D: 133.35 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 11.7 kN | Mass: 0.254 kg
KUX045 2RDd: 114.3 mm | D: 133.35 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.30 kN | Mass: 0.277 kg
KUC047 2RDd: 120.65 mm | D: 139.7 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 10.9 kN | Mass: 0.295 kg
KJA047 RDd: 120.65 mm | D: 139.7 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.0 kN | Mass: 0.268 kg
KUX047 2RDd: 120.65 mm | D: 139.7 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.50 kN | Mass: 0.295 kg
KUC050 2RDd: 127 mm | D: 146.05 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 11.1 kN | Mass: 0.308 kg
KJA050 RDd: 127 mm | D: 146.05 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.2 kN | Mass: 0.281 kg
KUX050 2RDd: 127 mm | D: 146.05 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 9.65 kN | Mass: 0.308 kg
KUC055 2RDd: 139.7 mm | D: 158.75 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 11.5 kN | Mass: 0.336 kg
KJA055 RDd: 139.7 mm | D: 158.75 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.5 kN | Mass: 0.304 kg
KUX055 2RDd: 139.7 mm | D: 158.75 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.0 kN | Mass: 0.336 kg
KUC060 2RDd: 152.4 mm | D: 171.45 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 11.9 kN | Mass: 0.367 kg
KJA060 RDd: 152.4 mm | D: 171.45 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 12.9 kN | Mass: 0.331 kg
KUX060 2RDd: 152.4 mm | D: 171.45 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.3 kN | Mass: 0.367 kg
KUC065 2RDd: 165.1 mm | D: 184.15 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 12.2 kN | Mass: 0.395 kg
KJA065 RDd: 165.1 mm | D: 184.15 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 13.4 kN | Mass: 0.354 kg
KUX065 2RDd: 165.1 mm | D: 184.15 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.6 kN | Mass: 0.395 kg
KUC070 2RDd: 177.8 mm | D: 196.85 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 12.5 kN | Mass: 0.422 kg
KJA070 RDd: 177.8 mm | D: 196.85 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 13.6 kN | Mass: 0.381 kg
KUX070 2RDd: 177.8 mm | D: 196.85 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 10.9 kN | Mass: 0.422 kg
KUC075 2RDd: 190.5 mm | D: 209.55 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 12.8 kN | Mass: 0.449 kg
KJA075 RDd: 190.5 mm | D: 209.55 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 14.0 kN | Mass: 0.404 kg
KUX075 2RDd: 190.5 mm | D: 209.55 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 11.1 kN | Mass: 0.449 kg
KUC080 2RDd: 203.2 mm | D: 222.25 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 13.1 kN | Mass: 0.481 kg
KJA080 RDd: 203.2 mm | D: 222.25 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 14.4 kN | Mass: 0.431 kg
KUX080 2RDd: 203.2 mm | D: 222.25 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 11.4 kN | Mass: 0.481 kg
KUC090 2RDd: 228.6 mm | D: 247.65 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 13.7 kN | Mass: 0.535 kg
KJA090 RDd: 228.6 mm | D: 247.65 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 14.9 kN | Mass: 0.499 kg
KUX090 2RDd: 228.6 mm | D: 247.65 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 11.9 kN | Mass: 0.535 kg
KUC100 2RDd: 254 mm | D: 273.05 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 14.2 kN | Mass: 0.594 kg
KJA100 RDd: 254 mm | D: 273.05 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 15.6 kN | Mass: 0.531 kg
KUX100 2RDd: 254 mm | D: 273.05 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 12.3 kN | Mass: 0.594 kg
KUC110 2RDd: 279.4 mm | D: 298.45 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 14.7 kN | Mass: 0.649 kg
KJA110 RDd: 279.4 mm | D: 298.45 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 16.1 kN | Mass: 0.581 kg
KUX110 2RDd: 279.4 mm | D: 298.45 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 12.7 kN | Mass: 0.649 kg
KUC120 2RDd: 304.8 mm | D: 323.85 mm | B: 11.1 mm | Type: Deep groove, type C | Cr: 15.2 kN | Mass: 0.708 kg
KJA120 RDd: 304.8 mm | D: 323.85 mm | B: 11.1 mm | Type: Angular contact, type A | Cr: 16.5 kN | Mass: 0.630 kg
KUX120 2RDd: 304.8 mm | D: 323.85 mm | B: 11.1 mm | Type: Four-point contact, type X | Cr: 13.1 kN | Mass: 0.708 kg

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