Needle bearing
Needle bearing is a cylindrical roller bearing, relative to its diameter, the roller is both thin and long this roller called needle although has a smaller section, bearing still has a higher load bearing capacity, needle bearing is equipped with thin and long roller (roller diameter D 5mm,L/D 2.5,L is the length of roller), so the radial structure is compact, and its inner diameter size and load capacity are the same as other types of bearings, while the outer diameter is the smallest, especially suitable for the radial installation size of the support structure is limited .
Shaft Diameter | Bearing No. | Boundary Dimensions | Basic Load Ratings | Limiting Speed | Fw D C | E | D1 | d2 | D2 | rS | C | Co | mm | mm | m in. | N | 6 | NAO 6X17X10 TN | 13 | 10.3 | 12.7 | 13.3 | 0.3 | 4750 | 5500 | 29000 | 9 | NAO 9X22X12 TN | 18 | 12.3 | 17.6 | 18.3 | 0.3 | 10000 | 9900 | 26000 | 12 | NAO 12X24X13 | 20 | 16.4 | 19.6 | 20.3 | 0.3 | 8900 | 11800 | 24000 | NAO 1 2X24X20 | 20 | 16.4 | 19.6 | 20.3 | 0.3 | 13300 | 19800 | 24000 | NAO 12X28X12 | 22 | 16.4 | 21.6 | 22.3 | 0.3 | 11500 | 12500 | 23000 | 15 | NAO 15X28X13 | 24 | 20.4 | 23.6 | 24.3 | 0.3 | 9800 | 14300 | 21000 | NAO 1 5X32X12 | 26 | 20.4 | 25.6 | 26.5 | 0.3 | 13400 | 16200 | 21000 | 17 | NAO 17X30X13 | 26 | 22.4 | 25.6 | 26.3 | 0.3 | 10400 | 15900 | 20000 | NAO 17X35X16 | 29 | 22.4 | 28.4 | 29.5 | 0.3 | 20000 | 25500 | 19000 | 20 | NAO 20X35X17 | 29 | 25.6 | 28.4 | 29.5 | 0.3 | 14900 | 26000 | 18000 | NAO 20X37X16 | 32 | 25.6 | 31.4 | 32.5 | 0.3 | 21000 | 28000 | 17000 | 25 | NAO 25X40X17 | 35 | 30.6 | 34.4 | 35.5 | 0.3 | 19600 | 34000 | 15000 | NAO 25X42X16 | 37 | 30.6 | 36.4 | 37.5 | 0.3 | 23100 | 33500 | 15000 | NAO 25X42X32 | 37 | 30.6 | 36.4 | 37.5 | 0.3 | 39500 | 37000 | 15000 | 30 | NAO 30X45X13 | 40 | 35.6 | 39.4 | 40.5 | 0.3 | 16200 | 28000 | 13000 | NAO 30X45X17 | 40 | 35.6 | 39.4 | 40.5 | 0.3 | 20800 | 38500 | 13000 | NAO 30X45X26 | 40 | 35.6 | 39.4 | 40.5 | 0.3 | 27500 | 56000 | 13000 | NAO 30X47X16 | 42 | 35.6 | 41.4 | 42.5 | 0.3 | 24400 | 37500 | 13000 | NAO 30X47X18 | 42 | 35.6 | 41.4 | 42.5 | 0.3 | 27500 | 43000 | 13000 | NAO 30X52X18 | 44 | 37.6 | 43.4 | 44.5 | 0.3 | 28000 | 45500 | 12000 | 35 | NAO 35X50X17 | 45 | 40.6 | 44.4 | 45.5 | 0.3 | 21400 | 41500 | 12000 | NAO 35X55X20 | 47 | 40.6 | 46.2 | 47.5 | 0.3 | 32500 | 57000 | 11000 | NAO 35X57X20.5 | 50 | 42.6 | 49.2 | 50.5 | 0.3 | 36000 | 59000 | 11000 | 40 | NAO 40X55X17 | 50 | 45.69 | 49.2 | 50.5 | 0.3 | 22500 | 46000 | 10000 | NAO 40X65X20 | 58 | 50.6 | 57.2 | 58.5 | 0.3 | 35500 | 62000 | 9000 | 50 | NAO 50X68X20 | 60 | 55.8 | 59.2 | 60.8 | 0.6 | 28500 | 66000 | 8500 | NAO 50X78X20 | 68 | 60.8 | 67.2 | 68.8 | 1 | 43500 | 85000 | 7500 | 70 | NAO 70X100X30 | 88 | 81 | 87.2 | 89 | 1 | 72000 | 179000 | 6000 | 75 | NAO 75X105X25 | 93 | 86 | 92.2 | 94 | 1 | 57000 | 136000 | 5500 | 80 | NAO 80X110X30 | 98 | 91 | 97.2 | 99 | 1 | 68000 | 172000 | 5000 | 90 | NAO 90X120X30 | 108 | 101 | 107.2 | 109 | 1 | 71000 | 188000 | 4700 | |


