• KBC 303 Series Tapered Roller Bearings (Metric, J, C, D)
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KBC 303 Series Tapered Roller Bearings (Metric, J, C, D)

KBC 303 Series Tapered Roller Bearings (Metric, J, C, D)

KBC single-row metric tapered roller bearings of the medium series 303 to ISO 355 and KS B 2027. ISO 355 dimension series codes are printed in the catalogue for most sizes.

Key features

  • Separable cone (inner ring with rollers and cage) and cup (outer ring)
  • Carries combined radial and one-direction axial loads
  • Suffix J: dimensions per ISO 355; C / D: steeper contact angle
  • Pressed steel cage as standard
  • Usually mounted in pairs, adjusted against a second bearing

Specifications

Rows Single row
Dimensions Metric, ISO 355 / KS B 2027
Contact angle codes C approx. 20 deg, D approx. 28 deg
Source KBC Rolling Bearings catalogue GB 41 500, p. 180-187
30304J d: 20 mm | D: 52 mm | T: 16.25 mm | C: 36 kN | C0: 34.5 kN | Mass: 0.171 kg
30304C d: 20 mm | D: 52 mm | T: 16.25 mm | C: 32.5 kN | C0: 32 kN | Mass: 0.167 kg
30305J d: 25 mm | D: 62 mm | T: 18.25 mm | C: 47.5 kN | C0: 46.5 kN | Mass: 0.269 kg
30305C d: 25 mm | D: 62 mm | T: 18.25 mm | C: 42.5 kN | C0: 45 kN | Mass: 0.275 kg
30305D d: 25 mm | D: 62 mm | T: 18.25 mm | C: 38 kN | C0: 41.5 kN | Mass: 0.254 kg
30305DX d: 25 mm | D: 62 mm | T: 19.7 mm | C: 39 kN | C0: 41.5 kN | Mass: 0.262 kg
303/28C d: 28 mm | D: 68 mm | T: 19.75 mm | C: 52.5 kN | C0: 53.5 kN | Mass: 0.335 kg
30306J d: 30 mm | D: 72 mm | T: 20.75 mm | C: 60 kN | C0: 61 kN | Mass: 0.402 kg
30306Jh d: 30 mm | D: 72 mm | T: 19 mm | C: 59 kN | C0: 61 kN | Mass: 0.385 kg
30306C d: 30 mm | D: 72 mm | T: 20.75 mm | C: 57.5 kN | C0: 56.5 kN | Mass: 0.382 kg
30306DJ d: 30 mm | D: 72 mm | T: 20.75 mm | C: 52 kN | C0: 56.5 kN | Mass: 0.398 kg
30307J d: 35 mm | D: 80 mm | T: 22.75 mm | C: 77 kN | C0: 80 kN | Mass: 0.52 kg
30307 d: 35 mm | D: 80 mm | T: 22.75 mm | C: 67.8 kN | C0: 68.1 kN | Mass: 0.52 kg
30307C d: 35 mm | D: 80 mm | T: 22.75 mm | C: 68.5 kN | C0: 71.5 kN | Mass: 0.517 kg
30307DJ d: 35 mm | D: 80 mm | T: 22.75 mm | C: 63 kN | C0: 69.5 kN | Mass: 0.517 kg
30308J d: 40 mm | D: 90 mm | T: 25.25 mm | C: 96 kN | C0: 109 kN | Mass: 0.756 kg
30308D d: 40 mm | D: 90 mm | T: 25.25 mm | C: 81.5 kN | C0: 92 kN | Mass: 0.712 kg
30308DJ d: 40 mm | D: 90 mm | T: 25.25 mm | C: 81.5 kN | C0: 92 kN | Mass: 0.726 kg
30309J d: 45 mm | D: 100 mm | T: 27.25 mm | C: 110 kN | C0: 129 kN | Mass: 1.01 kg
30309D d: 45 mm | D: 100 mm | T: 27.25 mm | C: 81.5 kN | C0: 90 kN | Mass: 0.95 kg
30309DJ d: 45 mm | D: 100 mm | T: 27.25 mm | C: 92 kN | C0: 106 kN | Mass: 0.955 kg
30310J d: 50 mm | D: 110 mm | T: 29.25 mm | C: 127 kN | C0: 147 kN | Mass: 1.28 kg
30310D d: 50 mm | D: 110 mm | T: 29.25 mm | C: 103 kN | C0: 117 kN | Mass: 1.25 kg
30310DJ d: 50 mm | D: 110 mm | T: 29.25 mm | C: 110 kN | C0: 130 kN | Mass: 1.25 kg
30311J d: 55 mm | D: 120 mm | T: 31.5 mm | C: 146 kN | C0: 170 kN | Mass: 1.62 kg
30311DJ d: 55 mm | D: 120 mm | T: 31.5 mm | C: 129 kN | C0: 153 kN | Mass: 1.57 kg
30312J d: 60 mm | D: 130 mm | T: 33.5 mm | C: 172 kN | C0: 204 kN | Mass: 2.03 kg
30312DJ d: 60 mm | D: 130 mm | T: 33.5 mm | C: 147 kN | C0: 175 kN | Mass: 1.98 kg
30313J d: 65 mm | D: 140 mm | T: 36 mm | C: 203 kN | C0: 238 kN | Mass: 2.5 kg
30313DJ d: 65 mm | D: 140 mm | T: 36 mm | C: 170 kN | C0: 203 kN | Mass: 2.42 kg
30314J d: 70 mm | D: 150 mm | T: 38 mm | C: 225 kN | C0: 272 kN | Mass: 3.03 kg
Tapered Roller BearingsKBC Bearings
31 product codes available in this family
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KBC 303 Series Tapered Roller Bearings (Metric, J, C, D)

Brand KBC Bearings·Tapered Roller Bearings

Available part numbers (31)

30304J, 30304C, 30305J, 30305C, 30305D, 30305DX, 303/28C, 30306J, 30306Jh, 30306C + 21 more — see full table ↓

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Product codes & specifications
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Product codeSpec
30304Jd: 20 mm | D: 52 mm | T: 16.25 mm | C: 36 kN | C0: 34.5 kN | Mass: 0.171 kg
30304Cd: 20 mm | D: 52 mm | T: 16.25 mm | C: 32.5 kN | C0: 32 kN | Mass: 0.167 kg
30305Jd: 25 mm | D: 62 mm | T: 18.25 mm | C: 47.5 kN | C0: 46.5 kN | Mass: 0.269 kg
30305Cd: 25 mm | D: 62 mm | T: 18.25 mm | C: 42.5 kN | C0: 45 kN | Mass: 0.275 kg
30305Dd: 25 mm | D: 62 mm | T: 18.25 mm | C: 38 kN | C0: 41.5 kN | Mass: 0.254 kg
30305DXd: 25 mm | D: 62 mm | T: 19.7 mm | C: 39 kN | C0: 41.5 kN | Mass: 0.262 kg
303/28Cd: 28 mm | D: 68 mm | T: 19.75 mm | C: 52.5 kN | C0: 53.5 kN | Mass: 0.335 kg
30306Jd: 30 mm | D: 72 mm | T: 20.75 mm | C: 60 kN | C0: 61 kN | Mass: 0.402 kg
30306Jhd: 30 mm | D: 72 mm | T: 19 mm | C: 59 kN | C0: 61 kN | Mass: 0.385 kg
30306Cd: 30 mm | D: 72 mm | T: 20.75 mm | C: 57.5 kN | C0: 56.5 kN | Mass: 0.382 kg
30306DJd: 30 mm | D: 72 mm | T: 20.75 mm | C: 52 kN | C0: 56.5 kN | Mass: 0.398 kg
30307Jd: 35 mm | D: 80 mm | T: 22.75 mm | C: 77 kN | C0: 80 kN | Mass: 0.52 kg
30307d: 35 mm | D: 80 mm | T: 22.75 mm | C: 67.8 kN | C0: 68.1 kN | Mass: 0.52 kg
30307Cd: 35 mm | D: 80 mm | T: 22.75 mm | C: 68.5 kN | C0: 71.5 kN | Mass: 0.517 kg
30307DJd: 35 mm | D: 80 mm | T: 22.75 mm | C: 63 kN | C0: 69.5 kN | Mass: 0.517 kg
30308Jd: 40 mm | D: 90 mm | T: 25.25 mm | C: 96 kN | C0: 109 kN | Mass: 0.756 kg
30308Dd: 40 mm | D: 90 mm | T: 25.25 mm | C: 81.5 kN | C0: 92 kN | Mass: 0.712 kg
30308DJd: 40 mm | D: 90 mm | T: 25.25 mm | C: 81.5 kN | C0: 92 kN | Mass: 0.726 kg
30309Jd: 45 mm | D: 100 mm | T: 27.25 mm | C: 110 kN | C0: 129 kN | Mass: 1.01 kg
30309Dd: 45 mm | D: 100 mm | T: 27.25 mm | C: 81.5 kN | C0: 90 kN | Mass: 0.95 kg
30309DJd: 45 mm | D: 100 mm | T: 27.25 mm | C: 92 kN | C0: 106 kN | Mass: 0.955 kg
30310Jd: 50 mm | D: 110 mm | T: 29.25 mm | C: 127 kN | C0: 147 kN | Mass: 1.28 kg
30310Dd: 50 mm | D: 110 mm | T: 29.25 mm | C: 103 kN | C0: 117 kN | Mass: 1.25 kg
30310DJd: 50 mm | D: 110 mm | T: 29.25 mm | C: 110 kN | C0: 130 kN | Mass: 1.25 kg
30311Jd: 55 mm | D: 120 mm | T: 31.5 mm | C: 146 kN | C0: 170 kN | Mass: 1.62 kg
30311DJd: 55 mm | D: 120 mm | T: 31.5 mm | C: 129 kN | C0: 153 kN | Mass: 1.57 kg
30312Jd: 60 mm | D: 130 mm | T: 33.5 mm | C: 172 kN | C0: 204 kN | Mass: 2.03 kg
30312DJd: 60 mm | D: 130 mm | T: 33.5 mm | C: 147 kN | C0: 175 kN | Mass: 1.98 kg
30313Jd: 65 mm | D: 140 mm | T: 36 mm | C: 203 kN | C0: 238 kN | Mass: 2.5 kg
30313DJd: 65 mm | D: 140 mm | T: 36 mm | C: 170 kN | C0: 203 kN | Mass: 2.42 kg
30314Jd: 70 mm | D: 150 mm | T: 38 mm | C: 225 kN | C0: 272 kN | Mass: 3.03 kg

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