Bearing size reference
Cylindrical roller bearings: size tables
Cylindrical rollers with line contact for high radial load capacity; ring flanges determine axial guidance.
Cylindrical roller bearings carry heavy radial loads and suit high speeds. The design letters describe which ring has flanges: NU (two flanges on the outer ring, none on the inner), NJ (one inner-ring flange), NUP (inner flange plus loose flange ring) and N (flanges on the inner ring).
NU, NJ, NUP and N bearings of the same size share the same bore, outside diameter and width, but they are not interchangeable — they locate the shaft axially in different ways.
| Property | |
|---|---|
| Loads | High radial; NJ/NUP limited axial |
| Typical uses | Electric motors and generators, Gearboxes, Rolling mills, Pumps and compressors |
| Standard sizes listed | 110 |
| Dimension standard | ISO 15 |
Dimension series 02
NU2 series
Light series; NJ2, NUP2 and N2 share these dimensions.
| Designation | d (mm) | D (mm) | B (mm) | d × D × B (in) |
|---|---|---|---|---|
| NU204 / NJ204 / NUP204 / N204 | 20 | 47 | 14 | 0.7874 × 1.8504 × 0.5512 |
| NU205 / NJ205 / NUP205 / N205 | 25 | 52 | 15 | 0.9843 × 2.0472 × 0.5906 |
| NU206 / NJ206 / NUP206 / N206 | 30 | 62 | 16 | 1.1811 × 2.4409 × 0.6299 |
| NU207 / NJ207 / NUP207 / N207 | 35 | 72 | 17 | 1.378 × 2.8346 × 0.6693 |
| NU208 / NJ208 / NUP208 / N208 | 40 | 80 | 18 | 1.5748 × 3.1496 × 0.7087 |
| NU209 / NJ209 / NUP209 / N209 | 45 | 85 | 19 | 1.7717 × 3.3465 × 0.748 |
| NU210 / NJ210 / NUP210 / N210 | 50 | 90 | 20 | 1.9685 × 3.5433 × 0.7874 |
| NU211 / NJ211 / NUP211 / N211 | 55 | 100 | 21 | 2.1654 × 3.937 × 0.8268 |
| NU212 / NJ212 / NUP212 / N212 | 60 | 110 | 22 | 2.3622 × 4.3307 × 0.8661 |
| NU213 / NJ213 / NUP213 / N213 | 65 | 120 | 23 | 2.5591 × 4.7244 × 0.9055 |
| NU214 / NJ214 / NUP214 / N214 | 70 | 125 | 24 | 2.7559 × 4.9213 × 0.9449 |
| NU215 / NJ215 / NUP215 / N215 | 75 | 130 | 25 | 2.9528 × 5.1181 × 0.9843 |
| NU216 / NJ216 / NUP216 / N216 | 80 | 140 | 26 | 3.1496 × 5.5118 × 1.0236 |
| NU217 / NJ217 / NUP217 / N217 | 85 | 150 | 28 | 3.3465 × 5.9055 × 1.1024 |
| NU218 / NJ218 / NUP218 / N218 | 90 | 160 | 30 | 3.5433 × 6.2992 × 1.1811 |
| NU219 / NJ219 / NUP219 / N219 | 95 | 170 | 32 | 3.7402 × 6.6929 × 1.2598 |
| NU220 / NJ220 / NUP220 / N220 | 100 | 180 | 34 | 3.937 × 7.0866 × 1.3386 |
| NU221 / NJ221 / NUP221 / N221 | 105 | 190 | 36 | 4.1339 × 7.4803 × 1.4173 |
| NU222 / NJ222 / NUP222 / N222 | 110 | 200 | 38 | 4.3307 × 7.874 × 1.4961 |
| NU224 / NJ224 / NUP224 / N224 | 120 | 215 | 40 | 4.7244 × 8.4646 × 1.5748 |
| NU226 / NJ226 / NUP226 / N226 | 130 | 230 | 40 | 5.1181 × 9.0551 × 1.5748 |
| NU228 / NJ228 / NUP228 / N228 | 140 | 250 | 42 | 5.5118 × 9.8425 × 1.6535 |
| NU230 / NJ230 / NUP230 / N230 | 150 | 270 | 45 | 5.9055 × 10.6299 × 1.7717 |
| NU232 / NJ232 / NUP232 / N232 | 160 | 290 | 48 | 6.2992 × 11.4173 × 1.8898 |
| NU234 / NJ234 / NUP234 / N234 | 170 | 310 | 52 | 6.6929 × 12.2047 × 2.0472 |
| NU236 / NJ236 / NUP236 / N236 | 180 | 320 | 52 | 7.0866 × 12.5984 × 2.0472 |
| NU238 / NJ238 / NUP238 / N238 | 190 | 340 | 55 | 7.4803 × 13.3858 × 2.1654 |
| NU240 / NJ240 / NUP240 / N240 | 200 | 360 | 58 | 7.874 × 14.1732 × 2.2835 |
Dimension series 03
NU3 series
Medium series; NJ3, NUP3 and N3 share these dimensions.
| Designation | d (mm) | D (mm) | B (mm) | d × D × B (in) |
|---|---|---|---|---|
| NU304 / NJ304 / NUP304 / N304 | 20 | 52 | 15 | 0.7874 × 2.0472 × 0.5906 |
| NU305 / NJ305 / NUP305 / N305 | 25 | 62 | 17 | 0.9843 × 2.4409 × 0.6693 |
| NU306 / NJ306 / NUP306 / N306 | 30 | 72 | 19 | 1.1811 × 2.8346 × 0.748 |
| NU307 / NJ307 / NUP307 / N307 | 35 | 80 | 21 | 1.378 × 3.1496 × 0.8268 |
| NU308 / NJ308 / NUP308 / N308 | 40 | 90 | 23 | 1.5748 × 3.5433 × 0.9055 |
| NU309 / NJ309 / NUP309 / N309 | 45 | 100 | 25 | 1.7717 × 3.937 × 0.9843 |
| NU310 / NJ310 / NUP310 / N310 | 50 | 110 | 27 | 1.9685 × 4.3307 × 1.063 |
| NU311 / NJ311 / NUP311 / N311 | 55 | 120 | 29 | 2.1654 × 4.7244 × 1.1417 |
| NU312 / NJ312 / NUP312 / N312 | 60 | 130 | 31 | 2.3622 × 5.1181 × 1.2205 |
| NU313 / NJ313 / NUP313 / N313 | 65 | 140 | 33 | 2.5591 × 5.5118 × 1.2992 |
| NU314 / NJ314 / NUP314 / N314 | 70 | 150 | 35 | 2.7559 × 5.9055 × 1.378 |
| NU315 / NJ315 / NUP315 / N315 | 75 | 160 | 37 | 2.9528 × 6.2992 × 1.4567 |
| NU316 / NJ316 / NUP316 / N316 | 80 | 170 | 39 | 3.1496 × 6.6929 × 1.5354 |
| NU317 / NJ317 / NUP317 / N317 | 85 | 180 | 41 | 3.3465 × 7.0866 × 1.6142 |
| NU318 / NJ318 / NUP318 / N318 | 90 | 190 | 43 | 3.5433 × 7.4803 × 1.6929 |
| NU319 / NJ319 / NUP319 / N319 | 95 | 200 | 45 | 3.7402 × 7.874 × 1.7717 |
| NU320 / NJ320 / NUP320 / N320 | 100 | 215 | 47 | 3.937 × 8.4646 × 1.8504 |
| NU321 / NJ321 / NUP321 / N321 | 105 | 225 | 49 | 4.1339 × 8.8583 × 1.9291 |
| NU322 / NJ322 / NUP322 / N322 | 110 | 240 | 50 | 4.3307 × 9.4488 × 1.9685 |
| NU324 / NJ324 / NUP324 / N324 | 120 | 260 | 55 | 4.7244 × 10.2362 × 2.1654 |
| NU326 / NJ326 / NUP326 / N326 | 130 | 280 | 58 | 5.1181 × 11.0236 × 2.2835 |
| NU328 / NJ328 / NUP328 / N328 | 140 | 300 | 62 | 5.5118 × 11.811 × 2.4409 |
| NU330 / NJ330 / NUP330 / N330 | 150 | 320 | 65 | 5.9055 × 12.5984 × 2.5591 |
| NU332 / NJ332 / NUP332 / N332 | 160 | 340 | 68 | 6.2992 × 13.3858 × 2.6772 |
| NU334 / NJ334 / NUP334 / N334 | 170 | 360 | 72 | 6.6929 × 14.1732 × 2.8346 |
| NU336 / NJ336 / NUP336 / N336 | 180 | 380 | 75 | 7.0866 × 14.9606 × 2.9528 |
| NU338 / NJ338 / NUP338 / N338 | 190 | 400 | 78 | 7.4803 × 15.748 × 3.0709 |
| NU340 / NJ340 / NUP340 / N340 | 200 | 420 | 80 | 7.874 × 16.5354 × 3.1496 |
Dimension series 22
NU22 series
Wide light series; NJ22 and NUP22 share these dimensions.
| Designation | d (mm) | D (mm) | B (mm) | d × D × B (in) |
|---|---|---|---|---|
| NU2204 / NJ2204 / NUP2204 | 20 | 47 | 18 | 0.7874 × 1.8504 × 0.7087 |
| NU2205 / NJ2205 / NUP2205 | 25 | 52 | 18 | 0.9843 × 2.0472 × 0.7087 |
| NU2206 / NJ2206 / NUP2206 | 30 | 62 | 20 | 1.1811 × 2.4409 × 0.7874 |
| NU2207 / NJ2207 / NUP2207 | 35 | 72 | 23 | 1.378 × 2.8346 × 0.9055 |
| NU2208 / NJ2208 / NUP2208 | 40 | 80 | 23 | 1.5748 × 3.1496 × 0.9055 |
| NU2209 / NJ2209 / NUP2209 | 45 | 85 | 23 | 1.7717 × 3.3465 × 0.9055 |
| NU2210 / NJ2210 / NUP2210 | 50 | 90 | 23 | 1.9685 × 3.5433 × 0.9055 |
| NU2211 / NJ2211 / NUP2211 | 55 | 100 | 25 | 2.1654 × 3.937 × 0.9843 |
| NU2212 / NJ2212 / NUP2212 | 60 | 110 | 28 | 2.3622 × 4.3307 × 1.1024 |
| NU2213 / NJ2213 / NUP2213 | 65 | 120 | 31 | 2.5591 × 4.7244 × 1.2205 |
| NU2214 / NJ2214 / NUP2214 | 70 | 125 | 31 | 2.7559 × 4.9213 × 1.2205 |
| NU2215 / NJ2215 / NUP2215 | 75 | 130 | 31 | 2.9528 × 5.1181 × 1.2205 |
| NU2216 / NJ2216 / NUP2216 | 80 | 140 | 33 | 3.1496 × 5.5118 × 1.2992 |
| NU2217 / NJ2217 / NUP2217 | 85 | 150 | 36 | 3.3465 × 5.9055 × 1.4173 |
| NU2218 / NJ2218 / NUP2218 | 90 | 160 | 40 | 3.5433 × 6.2992 × 1.5748 |
| NU2219 / NJ2219 / NUP2219 | 95 | 170 | 43 | 3.7402 × 6.6929 × 1.6929 |
| NU2220 / NJ2220 / NUP2220 | 100 | 180 | 46 | 3.937 × 7.0866 × 1.811 |
| NU2222 / NJ2222 / NUP2222 | 110 | 200 | 53 | 4.3307 × 7.874 × 2.0866 |
| NU2224 / NJ2224 / NUP2224 | 120 | 215 | 58 | 4.7244 × 8.4646 × 2.2835 |
| NU2226 / NJ2226 / NUP2226 | 130 | 230 | 64 | 5.1181 × 9.0551 × 2.5197 |
| NU2228 / NJ2228 / NUP2228 | 140 | 250 | 68 | 5.5118 × 9.8425 × 2.6772 |
| NU2230 / NJ2230 / NUP2230 | 150 | 270 | 73 | 5.9055 × 10.6299 × 2.874 |
| NU2232 / NJ2232 / NUP2232 | 160 | 290 | 80 | 6.2992 × 11.4173 × 3.1496 |
| NU2234 / NJ2234 / NUP2234 | 170 | 310 | 86 | 6.6929 × 12.2047 × 3.3858 |
| NU2236 / NJ2236 / NUP2236 | 180 | 320 | 86 | 7.0866 × 12.5984 × 3.3858 |
| NU2238 / NJ2238 / NUP2238 | 190 | 340 | 92 | 7.4803 × 13.3858 × 3.622 |
| NU2240 / NJ2240 / NUP2240 | 200 | 360 | 98 | 7.874 × 14.1732 × 3.8583 |
Dimension series 23
NU23 series
Wide medium series; NJ23 and NUP23 share these dimensions.
| Designation | d (mm) | D (mm) | B (mm) | d × D × B (in) |
|---|---|---|---|---|
| NU2304 / NJ2304 / NUP2304 | 20 | 52 | 21 | 0.7874 × 2.0472 × 0.8268 |
| NU2305 / NJ2305 / NUP2305 | 25 | 62 | 24 | 0.9843 × 2.4409 × 0.9449 |
| NU2306 / NJ2306 / NUP2306 | 30 | 72 | 27 | 1.1811 × 2.8346 × 1.063 |
| NU2307 / NJ2307 / NUP2307 | 35 | 80 | 31 | 1.378 × 3.1496 × 1.2205 |
| NU2308 / NJ2308 / NUP2308 | 40 | 90 | 33 | 1.5748 × 3.5433 × 1.2992 |
| NU2309 / NJ2309 / NUP2309 | 45 | 100 | 36 | 1.7717 × 3.937 × 1.4173 |
| NU2310 / NJ2310 / NUP2310 | 50 | 110 | 40 | 1.9685 × 4.3307 × 1.5748 |
| NU2311 / NJ2311 / NUP2311 | 55 | 120 | 43 | 2.1654 × 4.7244 × 1.6929 |
| NU2312 / NJ2312 / NUP2312 | 60 | 130 | 46 | 2.3622 × 5.1181 × 1.811 |
| NU2313 / NJ2313 / NUP2313 | 65 | 140 | 48 | 2.5591 × 5.5118 × 1.8898 |
| NU2314 / NJ2314 / NUP2314 | 70 | 150 | 51 | 2.7559 × 5.9055 × 2.0079 |
| NU2315 / NJ2315 / NUP2315 | 75 | 160 | 55 | 2.9528 × 6.2992 × 2.1654 |
| NU2316 / NJ2316 / NUP2316 | 80 | 170 | 58 | 3.1496 × 6.6929 × 2.2835 |
| NU2317 / NJ2317 / NUP2317 | 85 | 180 | 60 | 3.3465 × 7.0866 × 2.3622 |
| NU2318 / NJ2318 / NUP2318 | 90 | 190 | 64 | 3.5433 × 7.4803 × 2.5197 |
| NU2319 / NJ2319 / NUP2319 | 95 | 200 | 67 | 3.7402 × 7.874 × 2.6378 |
| NU2320 / NJ2320 / NUP2320 | 100 | 215 | 73 | 3.937 × 8.4646 × 2.874 |
| NU2322 / NJ2322 / NUP2322 | 110 | 240 | 80 | 4.3307 × 9.4488 × 3.1496 |
| NU2324 / NJ2324 / NUP2324 | 120 | 260 | 86 | 4.7244 × 10.2362 × 3.3858 |
| NU2326 / NJ2326 / NUP2326 | 130 | 280 | 93 | 5.1181 × 11.0236 × 3.6614 |
| NU2328 / NJ2328 / NUP2328 | 140 | 300 | 102 | 5.5118 × 11.811 × 4.0157 |
| NU2330 / NJ2330 / NUP2330 | 150 | 320 | 108 | 5.9055 × 12.5984 × 4.252 |
| NU2332 / NJ2332 / NUP2332 | 160 | 340 | 114 | 6.2992 × 13.3858 × 4.4882 |
| NU2334 / NJ2334 / NUP2334 | 170 | 360 | 120 | 6.6929 × 14.1732 × 4.7244 |
| NU2336 / NJ2336 / NUP2336 | 180 | 380 | 126 | 7.0866 × 14.9606 × 4.9606 |
| NU2338 / NJ2338 / NUP2338 | 190 | 400 | 132 | 7.4803 × 15.748 × 5.1969 |
| NU2340 / NJ2340 / NUP2340 | 200 | 420 | 138 | 7.874 × 16.5354 × 5.4331 |
Other types
Browse other bearing types
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