• NTN 2300 Series Self-Aligning Bearings (Cylindrical & Tapered Bore)
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NTN 2300 Series Self-Aligning Bearings (Cylindrical & Tapered Bore)

NTN 2300 Series Self-Aligning Bearings (Cylindrical & Tapered Bore)

NTN 2300 series double-row self-aligning ball bearings, bore 10-110 mm, with cylindrical bore or tapered bore (K suffix, taper 1:12).

Key features

  • Spherical outer ring raceway accommodates shaft misalignment
  • Two rows of balls carry radial and light axial loads
  • K suffix: tapered bore 1:12 for adapter or withdrawal sleeve mounting
  • Low friction for high-speed applications

Specifications

Series 2300
Bearing type Double-row self-aligning ball bearing
Bore range 10-110 mm
Bore options Cylindrical, tapered (K)
Mass Cylindrical bore type, approx.
Load rating unit kN
Source NTN NTN Ball and Roller Bearings catalogue, p. 47-49
2300 d: 10 mm | D: 35 mm | B: 17 mm | Cr: 10.1 kN | C0r: 2.15 kN | Mass: 0.083 kg
2301 d: 12 mm | D: 37 mm | B: 17 mm | Cr: 11.8 kN | C0r: 2.71 kN | Mass: 0.091 kg
2302 d: 15 mm | D: 42 mm | B: 17 mm | Cr: 12 kN | C0r: 2.9 kN | Mass: 0.114 kg
2303 d: 17 mm | D: 47 mm | B: 19 mm | Cr: 14.4 kN | C0r: 3.55 kN | Mass: 0.156 kg
2304 d: 20 mm | D: 52 mm | B: 21 mm | Cr: 18.1 kN | C0r: 4.7 kN | Mass: 0.206 kg
2304K d: 20 mm | D: 52 mm | B: 21 mm | Cr: 18.1 kN | C0r: 4.7 kN | Mass: 0.206 kg
2305 d: 25 mm | D: 62 mm | B: 24 mm | Cr: 24.4 kN | C0r: 6.6 kN | Mass: 0.334 kg
2305K d: 25 mm | D: 62 mm | B: 24 mm | Cr: 24.4 kN | C0r: 6.6 kN | Mass: 0.334 kg
2306 d: 30 mm | D: 72 mm | B: 27 mm | Cr: 31.5 kN | C0r: 8.75 kN | Mass: 0.496 kg
2306K d: 30 mm | D: 72 mm | B: 27 mm | Cr: 31.5 kN | C0r: 8.75 kN | Mass: 0.496 kg
2307 d: 35 mm | D: 80 mm | B: 31 mm | Cr: 39.5 kN | C0r: 11.3 kN | Mass: 0.671 kg
2307K d: 35 mm | D: 80 mm | B: 31 mm | Cr: 39.5 kN | C0r: 11.3 kN | Mass: 0.671 kg
2308 d: 40 mm | D: 90 mm | B: 33 mm | Cr: 45 kN | C0r: 13.5 kN | Mass: 0.918 kg
2308K d: 40 mm | D: 90 mm | B: 33 mm | Cr: 45 kN | C0r: 13.5 kN | Mass: 0.918 kg
2309 d: 45 mm | D: 100 mm | B: 36 mm | Cr: 54 kN | C0r: 16.7 kN | Mass: 1.23 kg
2309K d: 45 mm | D: 100 mm | B: 36 mm | Cr: 54 kN | C0r: 16.7 kN | Mass: 1.23 kg
2310 d: 50 mm | D: 110 mm | B: 40 mm | Cr: 64.5 kN | C0r: 20.2 kN | Mass: 1.63 kg
2310K d: 50 mm | D: 110 mm | B: 40 mm | Cr: 64.5 kN | C0r: 20.2 kN | Mass: 1.63 kg
2311 d: 55 mm | D: 120 mm | B: 43 mm | Cr: 75.5 kN | C0r: 24 kN | Mass: 2.1 kg
2311K d: 55 mm | D: 120 mm | B: 43 mm | Cr: 75.5 kN | C0r: 24 kN | Mass: 2.1 kg
2312 d: 60 mm | D: 130 mm | B: 46 mm | Cr: 87 kN | C0r: 28.2 kN | Mass: 2.59 kg
2312K d: 60 mm | D: 130 mm | B: 46 mm | Cr: 87 kN | C0r: 28.2 kN | Mass: 2.59 kg
2313 d: 65 mm | D: 140 mm | B: 48 mm | Cr: 96 kN | C0r: 32.5 kN | Mass: 3.2 kg
2313K d: 65 mm | D: 140 mm | B: 48 mm | Cr: 96 kN | C0r: 32.5 kN | Mass: 3.2 kg
2314 d: 70 mm | D: 150 mm | B: 51 mm | Cr: 109 kN | C0r: 37.5 kN | Mass: 3.92 kg
2315 d: 75 mm | D: 160 mm | B: 55 mm | Cr: 123 kN | C0r: 43 kN | Mass: 4.78 kg
2315K d: 75 mm | D: 160 mm | B: 55 mm | Cr: 123 kN | C0r: 43 kN | Mass: 4.78 kg
2316 d: 80 mm | D: 170 mm | B: 58 mm | Cr: 128 kN | C0r: 45 kN | Mass: 5.65 kg
2316K d: 80 mm | D: 170 mm | B: 58 mm | Cr: 128 kN | C0r: 45 kN | Mass: 5.65 kg
2317 d: 85 mm | D: 180 mm | B: 60 mm | Cr: 140 kN | C0r: 51.5 kN | Mass: 6.55 kg
2317K d: 85 mm | D: 180 mm | B: 60 mm | Cr: 140 kN | C0r: 51.5 kN | Mass: 6.55 kg
2318 d: 90 mm | D: 190 mm | B: 64 mm | Cr: 152 kN | C0r: 57.5 kN | Mass: 7.75 kg
2318K d: 90 mm | D: 190 mm | B: 64 mm | Cr: 152 kN | C0r: 57.5 kN | Mass: 7.75 kg
2319 d: 95 mm | D: 200 mm | B: 67 mm | Cr: 165 kN | C0r: 64.5 kN | Mass: 9.05 kg
2319K d: 95 mm | D: 200 mm | B: 67 mm | Cr: 165 kN | C0r: 64.5 kN | Mass: 9.05 kg
2320 d: 100 mm | D: 215 mm | B: 73 mm | Cr: 192 kN | C0r: 79 kN | Mass: 11.5 kg
2320K d: 100 mm | D: 215 mm | B: 73 mm | Cr: 192 kN | C0r: 79 kN | Mass: 11.5 kg
2321 d: 105 mm | D: 225 mm | B: 77 mm | Cr: 205 kN | C0r: 87 kN | Mass: 13.2 kg
2322 d: 110 mm | D: 240 mm | B: 80 mm | Cr: 217 kN | C0r: 94.5 kN | Mass: 15.8 kg
2322K d: 110 mm | D: 240 mm | B: 80 mm | Cr: 217 kN | C0r: 94.5 kN | Mass: 15.8 kg
Self-Aligning Ball BearingsNTN
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NTN 2300 Series Self-Aligning Bearings (Cylindrical & Tapered Bore)

Brand NTN·Self-Aligning Ball Bearings

Available part numbers (40)

2300, 2301, 2302, 2303, 2304, 2304K, 2305, 2305K, 2306, 2306K + 30 more — see full table ↓

How to order

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Product codes & specifications
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Product codeSpec
2300d: 10 mm | D: 35 mm | B: 17 mm | Cr: 10.1 kN | C0r: 2.15 kN | Mass: 0.083 kg
2301d: 12 mm | D: 37 mm | B: 17 mm | Cr: 11.8 kN | C0r: 2.71 kN | Mass: 0.091 kg
2302d: 15 mm | D: 42 mm | B: 17 mm | Cr: 12 kN | C0r: 2.9 kN | Mass: 0.114 kg
2303d: 17 mm | D: 47 mm | B: 19 mm | Cr: 14.4 kN | C0r: 3.55 kN | Mass: 0.156 kg
2304d: 20 mm | D: 52 mm | B: 21 mm | Cr: 18.1 kN | C0r: 4.7 kN | Mass: 0.206 kg
2304Kd: 20 mm | D: 52 mm | B: 21 mm | Cr: 18.1 kN | C0r: 4.7 kN | Mass: 0.206 kg
2305d: 25 mm | D: 62 mm | B: 24 mm | Cr: 24.4 kN | C0r: 6.6 kN | Mass: 0.334 kg
2305Kd: 25 mm | D: 62 mm | B: 24 mm | Cr: 24.4 kN | C0r: 6.6 kN | Mass: 0.334 kg
2306d: 30 mm | D: 72 mm | B: 27 mm | Cr: 31.5 kN | C0r: 8.75 kN | Mass: 0.496 kg
2306Kd: 30 mm | D: 72 mm | B: 27 mm | Cr: 31.5 kN | C0r: 8.75 kN | Mass: 0.496 kg
2307d: 35 mm | D: 80 mm | B: 31 mm | Cr: 39.5 kN | C0r: 11.3 kN | Mass: 0.671 kg
2307Kd: 35 mm | D: 80 mm | B: 31 mm | Cr: 39.5 kN | C0r: 11.3 kN | Mass: 0.671 kg
2308d: 40 mm | D: 90 mm | B: 33 mm | Cr: 45 kN | C0r: 13.5 kN | Mass: 0.918 kg
2308Kd: 40 mm | D: 90 mm | B: 33 mm | Cr: 45 kN | C0r: 13.5 kN | Mass: 0.918 kg
2309d: 45 mm | D: 100 mm | B: 36 mm | Cr: 54 kN | C0r: 16.7 kN | Mass: 1.23 kg
2309Kd: 45 mm | D: 100 mm | B: 36 mm | Cr: 54 kN | C0r: 16.7 kN | Mass: 1.23 kg
2310d: 50 mm | D: 110 mm | B: 40 mm | Cr: 64.5 kN | C0r: 20.2 kN | Mass: 1.63 kg
2310Kd: 50 mm | D: 110 mm | B: 40 mm | Cr: 64.5 kN | C0r: 20.2 kN | Mass: 1.63 kg
2311d: 55 mm | D: 120 mm | B: 43 mm | Cr: 75.5 kN | C0r: 24 kN | Mass: 2.1 kg
2311Kd: 55 mm | D: 120 mm | B: 43 mm | Cr: 75.5 kN | C0r: 24 kN | Mass: 2.1 kg
2312d: 60 mm | D: 130 mm | B: 46 mm | Cr: 87 kN | C0r: 28.2 kN | Mass: 2.59 kg
2312Kd: 60 mm | D: 130 mm | B: 46 mm | Cr: 87 kN | C0r: 28.2 kN | Mass: 2.59 kg
2313d: 65 mm | D: 140 mm | B: 48 mm | Cr: 96 kN | C0r: 32.5 kN | Mass: 3.2 kg
2313Kd: 65 mm | D: 140 mm | B: 48 mm | Cr: 96 kN | C0r: 32.5 kN | Mass: 3.2 kg
2314d: 70 mm | D: 150 mm | B: 51 mm | Cr: 109 kN | C0r: 37.5 kN | Mass: 3.92 kg
2315d: 75 mm | D: 160 mm | B: 55 mm | Cr: 123 kN | C0r: 43 kN | Mass: 4.78 kg
2315Kd: 75 mm | D: 160 mm | B: 55 mm | Cr: 123 kN | C0r: 43 kN | Mass: 4.78 kg
2316d: 80 mm | D: 170 mm | B: 58 mm | Cr: 128 kN | C0r: 45 kN | Mass: 5.65 kg
2316Kd: 80 mm | D: 170 mm | B: 58 mm | Cr: 128 kN | C0r: 45 kN | Mass: 5.65 kg
2317d: 85 mm | D: 180 mm | B: 60 mm | Cr: 140 kN | C0r: 51.5 kN | Mass: 6.55 kg
2317Kd: 85 mm | D: 180 mm | B: 60 mm | Cr: 140 kN | C0r: 51.5 kN | Mass: 6.55 kg
2318d: 90 mm | D: 190 mm | B: 64 mm | Cr: 152 kN | C0r: 57.5 kN | Mass: 7.75 kg
2318Kd: 90 mm | D: 190 mm | B: 64 mm | Cr: 152 kN | C0r: 57.5 kN | Mass: 7.75 kg
2319d: 95 mm | D: 200 mm | B: 67 mm | Cr: 165 kN | C0r: 64.5 kN | Mass: 9.05 kg
2319Kd: 95 mm | D: 200 mm | B: 67 mm | Cr: 165 kN | C0r: 64.5 kN | Mass: 9.05 kg
2320d: 100 mm | D: 215 mm | B: 73 mm | Cr: 192 kN | C0r: 79 kN | Mass: 11.5 kg
2320Kd: 100 mm | D: 215 mm | B: 73 mm | Cr: 192 kN | C0r: 79 kN | Mass: 11.5 kg
2321d: 105 mm | D: 225 mm | B: 77 mm | Cr: 205 kN | C0r: 87 kN | Mass: 13.2 kg
2322d: 110 mm | D: 240 mm | B: 80 mm | Cr: 217 kN | C0r: 94.5 kN | Mass: 15.8 kg
2322Kd: 110 mm | D: 240 mm | B: 80 mm | Cr: 217 kN | C0r: 94.5 kN | Mass: 15.8 kg

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