• NTN 30300 Series Tapered Roller Bearings (Metric, Single Row)
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NTN 30300 Series Tapered Roller Bearings (Metric, Single Row)

NTN 30300 Series Tapered Roller Bearings (Metric, Single Row)

NTN 30300 series single-row metric tapered roller bearings, bore 15-170 mm, cone and cup supplied as an assembly.

Key features

  • Carries combined radial and one-direction axial loads
  • Separable cone (inner ring with rollers) and cup
  • 4T- prefix: NTN 4T long-life specification; E/ET prefixes and U, X, E1 suffixes as listed
  • Usually mounted in opposed pairs with clearance or preload adjustment

Specifications

Series 30300
Bearing type Single-row tapered roller bearing
Bore range 15-170 mm
Dimension system Metric (ISO)
Load rating unit kN
Source NTN NTN Ball and Roller Bearings catalogue, p. 80-87
4T-30302 d: 15 mm | D: 42 mm | T: 14.25 mm | Cr: 23.2 kN | C0r: 20.8 kN | Mass: 0.098 kg
4T-30303 d: 17 mm | D: 47 mm | T: 15.25 mm | Cr: 28.9 kN | C0r: 26.3 kN | Mass: 0.134 kg
4T-30304A d: 20 mm | D: 52 mm | T: 16.25 mm | Cr: 35.5 kN | C0r: 34 kN | Mass: 0.176 kg
4T-30304CA d: 20 mm | D: 52 mm | T: 16.25 mm | Cr: 31 kN | C0r: 31 kN | Mass: 0.17 kg
4T-30305 d: 25 mm | D: 62 mm | T: 18.25 mm | Cr: 48.5 kN | C0r: 47.5 kN | Mass: 0.272 kg
4T-30305C d: 25 mm | D: 62 mm | T: 18.25 mm | Cr: 41.5 kN | C0r: 41.5 kN | Mass: 0.264 kg
4T-30305D d: 25 mm | D: 62 mm | T: 18.25 mm | Cr: 40.5 kN | C0r: 43.5 kN | Mass: 0.284 kg
4T-30306 d: 30 mm | D: 72 mm | T: 20.75 mm | Cr: 60 kN | C0r: 61 kN | Mass: 0.408 kg
4T-30306CA d: 30 mm | D: 72 mm | T: 20.75 mm | Cr: 58.5 kN | C0r: 58.5 kN | Mass: 0.398 kg
4T-30306D d: 30 mm | D: 72 mm | T: 20.75 mm | Cr: 48.5 kN | C0r: 51.5 kN | Mass: 0.398 kg
4T-30307 d: 35 mm | D: 80 mm | T: 22.75 mm | Cr: 75 kN | C0r: 77 kN | Mass: 0.54 kg
4T-30307C d: 35 mm | D: 80 mm | T: 22.75 mm | Cr: 66.5 kN | C0r: 68.5 kN | Mass: 0.517 kg
4T-30307D d: 35 mm | D: 80 mm | T: 22.75 mm | Cr: 63.5 kN | C0r: 70 kN | Mass: 0.53 kg
4T-30308 d: 40 mm | D: 90 mm | T: 25.25 mm | Cr: 91.5 kN | C0r: 102 kN | Mass: 0.769 kg
4T-30308C d: 40 mm | D: 90 mm | T: 25.25 mm | Cr: 83 kN | C0r: 87 kN | Mass: 0.728 kg
4T-30308D d: 40 mm | D: 90 mm | T: 25.25 mm | Cr: 77 kN | C0r: 85.5 kN | Mass: 0.738 kg
4T-30309 d: 45 mm | D: 100 mm | T: 27.25 mm | Cr: 111 kN | C0r: 126 kN | Mass: 1.01 kg
4T-30309D d: 45 mm | D: 100 mm | T: 27.25 mm | Cr: 96 kN | C0r: 109 kN | Mass: 0.958 kg
4T-30310 d: 50 mm | D: 110 mm | T: 29.25 mm | Cr: 133 kN | C0r: 152 kN | Mass: 1.31 kg
4T-30310D d: 50 mm | D: 110 mm | T: 29.25 mm | Cr: 113 kN | C0r: 130 kN | Mass: 1.25 kg
4T-30311 d: 55 mm | D: 120 mm | T: 31.5 mm | Cr: 155 kN | C0r: 179 kN | Mass: 1.66 kg
4T-30311D d: 55 mm | D: 120 mm | T: 31.5 mm | Cr: 132 kN | C0r: 154 kN | Mass: 1.59 kg
4T-30312U d: 60 mm | D: 130 mm | T: 33.5 mm | Cr: 180 kN | C0r: 210 kN | Mass: 2.06 kg
30312D d: 60 mm | D: 130 mm | T: 33.5 mm | Cr: 150 kN | C0r: 176 kN | Mass: 1.97 kg
4T-30313U d: 65 mm | D: 140 mm | T: 36 mm | Cr: 203 kN | C0r: 238 kN | Mass: 2.55 kg
30313D d: 65 mm | D: 140 mm | T: 36 mm | Cr: 173 kN | C0r: 204 kN | Mass: 2.42 kg
30314D d: 70 mm | D: 150 mm | T: 38 mm | Cr: 193 kN | C0r: 229 kN | Mass: 2.92 kg
30315U d: 75 mm | D: 160 mm | T: 40 mm | Cr: 255 kN | C0r: 305 kN | Mass: 3.57 kg
30315DU d: 75 mm | D: 160 mm | T: 40 mm | Cr: 215 kN | C0r: 256 kN | Mass: 3.47 kg
30316U d: 80 mm | D: 170 mm | T: 42.5 mm | Cr: 291 kN | C0r: 350 kN | Mass: 4.41 kg
30316DU d: 80 mm | D: 170 mm | T: 42.5 mm | Cr: 236 kN | C0r: 283 kN | Mass: 4.11 kg
30317U d: 85 mm | D: 180 mm | T: 44.5 mm | Cr: 305 kN | C0r: 365 kN | Mass: 5.2 kg
30317DU d: 85 mm | D: 180 mm | T: 44.5 mm | Cr: 247 kN | C0r: 293 kN | Mass: 4.85 kg
30318U d: 90 mm | D: 190 mm | T: 46.5 mm | Cr: 335 kN | C0r: 405 kN | Mass: 6.03 kg
30318DU d: 90 mm | D: 190 mm | T: 46.5 mm | Cr: 270 kN | C0r: 320 kN | Mass: 5.66 kg
30319U d: 95 mm | D: 200 mm | T: 49.5 mm | Cr: 365 kN | C0r: 445 kN | Mass: 6.98 kg
30319 d: 95 mm | D: 200 mm | T: 49.5 mm | Cr: 315 kN | C0r: 365 kN | Mass: -
30319DU d: 95 mm | D: 200 mm | T: 49.5 mm | Cr: 296 kN | C0r: 355 kN | Mass: 6.47 kg
30320U d: 100 mm | D: 215 mm | T: 51.5 mm | Cr: 410 kN | C0r: 500 kN | Mass: 8.56 kg
30320 d: 100 mm | D: 215 mm | T: 51.5 mm | Cr: 345 kN | C0r: 400 kN | Mass: -
30321U d: 105 mm | D: 225 mm | T: 53.5 mm | Cr: 435 kN | C0r: 530 kN | Mass: 9.79 kg
30321 d: 105 mm | D: 225 mm | T: 53 mm | Cr: 365 kN | C0r: 420 kN | Mass: -
30322U d: 110 mm | D: 240 mm | T: 54.5 mm | Cr: 480 kN | C0r: 590 kN | Mass: 11.4 kg
30322 d: 110 mm | D: 240 mm | T: 54.5 mm | Cr: 400 kN | C0r: 465 kN | Mass: -
30324U d: 120 mm | D: 260 mm | T: 69.5 mm | Cr: 560 kN | C0r: 695 kN | Mass: 14.2 kg
30324 d: 120 mm | D: 260 mm | T: 59.5 mm | Cr: 465 kN | C0r: 550 kN | Mass: -
30326U d: 130 mm | D: 280 mm | T: 63.75 mm | Cr: 650 kN | C0r: 830 kN | Mass: 17.4 kg
30328U d: 140 mm | D: 300 mm | T: 67.75 mm | Cr: 735 kN | C0r: 950 kN | Mass: 21.2 kg
30328 d: 140 mm | D: 300 mm | T: 67.75 mm | Cr: 640 kN | C0r: 780 kN | Mass: -
30330U d: 150 mm | D: 320 mm | T: 72 mm | Cr: 825 kN | C0r: 1070 kN | Mass: 25.5 kg
30330 d: 150 mm | D: 320 mm | T: 72 mm | Cr: 680 kN | C0r: 875 kN | Mass: -
30332U d: 160 mm | D: 340 mm | T: 75 mm | Cr: 915 kN | C0r: 1200 kN | Mass: 29.9 kg
30332 d: 160 mm | D: 340 mm | T: 75 mm | Cr: 755 kN | C0r: 975 kN | Mass: -
30334 d: 170 mm | D: 360 mm | T: 80 mm | Cr: 845 kN | C0r: 1100 kN | Mass: -
Tapered Roller BearingsNTN
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NTN 30300 Series Tapered Roller Bearings (Metric, Single Row)

Brand NTN·Tapered Roller Bearings

Available part numbers (54)

4T-30302, 4T-30303, 4T-30304A, 4T-30304CA, 4T-30305, 4T-30305C, 4T-30305D, 4T-30306, 4T-30306CA, 4T-30306D + 44 more — see full table ↓

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Product codeSpec
4T-30302d: 15 mm | D: 42 mm | T: 14.25 mm | Cr: 23.2 kN | C0r: 20.8 kN | Mass: 0.098 kg
4T-30303d: 17 mm | D: 47 mm | T: 15.25 mm | Cr: 28.9 kN | C0r: 26.3 kN | Mass: 0.134 kg
4T-30304Ad: 20 mm | D: 52 mm | T: 16.25 mm | Cr: 35.5 kN | C0r: 34 kN | Mass: 0.176 kg
4T-30304CAd: 20 mm | D: 52 mm | T: 16.25 mm | Cr: 31 kN | C0r: 31 kN | Mass: 0.17 kg
4T-30305d: 25 mm | D: 62 mm | T: 18.25 mm | Cr: 48.5 kN | C0r: 47.5 kN | Mass: 0.272 kg
4T-30305Cd: 25 mm | D: 62 mm | T: 18.25 mm | Cr: 41.5 kN | C0r: 41.5 kN | Mass: 0.264 kg
4T-30305Dd: 25 mm | D: 62 mm | T: 18.25 mm | Cr: 40.5 kN | C0r: 43.5 kN | Mass: 0.284 kg
4T-30306d: 30 mm | D: 72 mm | T: 20.75 mm | Cr: 60 kN | C0r: 61 kN | Mass: 0.408 kg
4T-30306CAd: 30 mm | D: 72 mm | T: 20.75 mm | Cr: 58.5 kN | C0r: 58.5 kN | Mass: 0.398 kg
4T-30306Dd: 30 mm | D: 72 mm | T: 20.75 mm | Cr: 48.5 kN | C0r: 51.5 kN | Mass: 0.398 kg
4T-30307d: 35 mm | D: 80 mm | T: 22.75 mm | Cr: 75 kN | C0r: 77 kN | Mass: 0.54 kg
4T-30307Cd: 35 mm | D: 80 mm | T: 22.75 mm | Cr: 66.5 kN | C0r: 68.5 kN | Mass: 0.517 kg
4T-30307Dd: 35 mm | D: 80 mm | T: 22.75 mm | Cr: 63.5 kN | C0r: 70 kN | Mass: 0.53 kg
4T-30308d: 40 mm | D: 90 mm | T: 25.25 mm | Cr: 91.5 kN | C0r: 102 kN | Mass: 0.769 kg
4T-30308Cd: 40 mm | D: 90 mm | T: 25.25 mm | Cr: 83 kN | C0r: 87 kN | Mass: 0.728 kg
4T-30308Dd: 40 mm | D: 90 mm | T: 25.25 mm | Cr: 77 kN | C0r: 85.5 kN | Mass: 0.738 kg
4T-30309d: 45 mm | D: 100 mm | T: 27.25 mm | Cr: 111 kN | C0r: 126 kN | Mass: 1.01 kg
4T-30309Dd: 45 mm | D: 100 mm | T: 27.25 mm | Cr: 96 kN | C0r: 109 kN | Mass: 0.958 kg
4T-30310d: 50 mm | D: 110 mm | T: 29.25 mm | Cr: 133 kN | C0r: 152 kN | Mass: 1.31 kg
4T-30310Dd: 50 mm | D: 110 mm | T: 29.25 mm | Cr: 113 kN | C0r: 130 kN | Mass: 1.25 kg
4T-30311d: 55 mm | D: 120 mm | T: 31.5 mm | Cr: 155 kN | C0r: 179 kN | Mass: 1.66 kg
4T-30311Dd: 55 mm | D: 120 mm | T: 31.5 mm | Cr: 132 kN | C0r: 154 kN | Mass: 1.59 kg
4T-30312Ud: 60 mm | D: 130 mm | T: 33.5 mm | Cr: 180 kN | C0r: 210 kN | Mass: 2.06 kg
30312Dd: 60 mm | D: 130 mm | T: 33.5 mm | Cr: 150 kN | C0r: 176 kN | Mass: 1.97 kg
4T-30313Ud: 65 mm | D: 140 mm | T: 36 mm | Cr: 203 kN | C0r: 238 kN | Mass: 2.55 kg
30313Dd: 65 mm | D: 140 mm | T: 36 mm | Cr: 173 kN | C0r: 204 kN | Mass: 2.42 kg
30314Dd: 70 mm | D: 150 mm | T: 38 mm | Cr: 193 kN | C0r: 229 kN | Mass: 2.92 kg
30315Ud: 75 mm | D: 160 mm | T: 40 mm | Cr: 255 kN | C0r: 305 kN | Mass: 3.57 kg
30315DUd: 75 mm | D: 160 mm | T: 40 mm | Cr: 215 kN | C0r: 256 kN | Mass: 3.47 kg
30316Ud: 80 mm | D: 170 mm | T: 42.5 mm | Cr: 291 kN | C0r: 350 kN | Mass: 4.41 kg
30316DUd: 80 mm | D: 170 mm | T: 42.5 mm | Cr: 236 kN | C0r: 283 kN | Mass: 4.11 kg
30317Ud: 85 mm | D: 180 mm | T: 44.5 mm | Cr: 305 kN | C0r: 365 kN | Mass: 5.2 kg
30317DUd: 85 mm | D: 180 mm | T: 44.5 mm | Cr: 247 kN | C0r: 293 kN | Mass: 4.85 kg
30318Ud: 90 mm | D: 190 mm | T: 46.5 mm | Cr: 335 kN | C0r: 405 kN | Mass: 6.03 kg
30318DUd: 90 mm | D: 190 mm | T: 46.5 mm | Cr: 270 kN | C0r: 320 kN | Mass: 5.66 kg
30319Ud: 95 mm | D: 200 mm | T: 49.5 mm | Cr: 365 kN | C0r: 445 kN | Mass: 6.98 kg
30319d: 95 mm | D: 200 mm | T: 49.5 mm | Cr: 315 kN | C0r: 365 kN | Mass: -
30319DUd: 95 mm | D: 200 mm | T: 49.5 mm | Cr: 296 kN | C0r: 355 kN | Mass: 6.47 kg
30320Ud: 100 mm | D: 215 mm | T: 51.5 mm | Cr: 410 kN | C0r: 500 kN | Mass: 8.56 kg
30320d: 100 mm | D: 215 mm | T: 51.5 mm | Cr: 345 kN | C0r: 400 kN | Mass: -
30321Ud: 105 mm | D: 225 mm | T: 53.5 mm | Cr: 435 kN | C0r: 530 kN | Mass: 9.79 kg
30321d: 105 mm | D: 225 mm | T: 53 mm | Cr: 365 kN | C0r: 420 kN | Mass: -
30322Ud: 110 mm | D: 240 mm | T: 54.5 mm | Cr: 480 kN | C0r: 590 kN | Mass: 11.4 kg
30322d: 110 mm | D: 240 mm | T: 54.5 mm | Cr: 400 kN | C0r: 465 kN | Mass: -
30324Ud: 120 mm | D: 260 mm | T: 69.5 mm | Cr: 560 kN | C0r: 695 kN | Mass: 14.2 kg
30324d: 120 mm | D: 260 mm | T: 59.5 mm | Cr: 465 kN | C0r: 550 kN | Mass: -
30326Ud: 130 mm | D: 280 mm | T: 63.75 mm | Cr: 650 kN | C0r: 830 kN | Mass: 17.4 kg
30328Ud: 140 mm | D: 300 mm | T: 67.75 mm | Cr: 735 kN | C0r: 950 kN | Mass: 21.2 kg
30328d: 140 mm | D: 300 mm | T: 67.75 mm | Cr: 640 kN | C0r: 780 kN | Mass: -
30330Ud: 150 mm | D: 320 mm | T: 72 mm | Cr: 825 kN | C0r: 1070 kN | Mass: 25.5 kg
30330d: 150 mm | D: 320 mm | T: 72 mm | Cr: 680 kN | C0r: 875 kN | Mass: -
30332Ud: 160 mm | D: 340 mm | T: 75 mm | Cr: 915 kN | C0r: 1200 kN | Mass: 29.9 kg
30332d: 160 mm | D: 340 mm | T: 75 mm | Cr: 755 kN | C0r: 975 kN | Mass: -
30334d: 170 mm | D: 360 mm | T: 80 mm | Cr: 845 kN | C0r: 1100 kN | Mass: -

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