Model Number

NKI,NKIS,NA49,NA69,BRI,ETC

NEEDLE ROLLER BEARINGS WITH INNER RINGS

NEEDLE ROLLER BEARINGS WITH INNER RINGS NKI,NKIS NKI,NKIS,NA49 NA69 NKI,NKIS,NA49,NA69       Shaft Diameter Bearing Designation Boundary Dimensions Basic Load Ratings Limiting Speed d F D B rS C Co Oil mm mm Min. N rpm 5 +NKI 5/12 TN 5 8 15 12 0.3 3950 4100 32000 +NKI 5/16 TN 5 8 15 16 0.3 5100 5800 32000 6 +NKI 6/12 TN 6 9 16 12 0.3 4500 5000 31000 +NKI 6/16 TN 6 9 16 16 0.3 5900 7100 31000 +NKIS 6 TN 6 10 19 13 0.3 5800 6000 29000 7 +NKI 7/12 TN 7 10 17 12 0.3 4750 5500 29000 +NKI 7/16 TN 7 10 17 16 0.3 6200 7800 29000 +NKIS 7 TN 7 12 22 16 0.6 9600 10400 26000 8  NKIS 8 8 14 25 16 0.6 14400 13800 24000 9 NKI 9/12 9 12 19 12 0.3 6400 7100 27000 NKI 9/16 9 12 19 16 0.3 9000 11000 27000 NKIS 9 9 15 26 16 0.6 14400 14000 23000 10 NKI 10/16 10 14 22 16 0.3 10100 11500 25000 NKI 10/20 10 14 22 20 0.3 12800 15600 25000 INKIS 10 10 16 28 16 0.6 15700 15800 22000 NA 4900 10 14 22 13 0.3 8500 9200 25000 12 NKI 12/16 12 16 24 16 0.3 11300 13900 23000 NKI 12/20 12 16 24 20 0.3 14400 18800 23000 INKIS 12 12 18 30 16 0.6 16800 17700 21000 NA 4901 12 16 24 13 0.3 9400 10900 23000 NA 6901 12 16 24 22 0.3 16000 21600 23000 15 NKI 15/16 15 19 27 16 0.3 13000 17400 22000 NKI 15/20 15 19 27 20 0.3 16500 23600 22000 INKIS 15 15 22 35 20 0.6 24500 28000 18000 NA 4902 15 20 28 13 0.3 10600 13600 21000 NA 6902 15 20 28 23 0.3 17300 25500 21000 17 NKI 17/16 17 21 29 16 0.3 13500 18700 21000 NKI 17/20 17 21 29 20 0.3 17100 25500 21000 NKIS 17 17 24 37 20 0.6 26000 31000 17000 NA 4903 17 22 30 13 0.3 11000 14600 20000 NA 6903 17 22 30 23 0.3 18600 29000 20000 20 NKI 20/16 20 24 32 16 0.3 15000 22300 18000 NKI 20/20 20 24 32 20 0.3 19000 30500 18000 NKIS 20 20 28 42 20 0.6 28500 36500 15000 NA 4904 20 25 37 17 0.3 21000 25500 17000 NA 6904 20 25 37 30 0.3 36000 51000 17000 22 NKI 22/16 22 26 34 16 0.3 15300 23600 17000 NKI 22/20 22 26 34 20 0.3 19400 32000 17000 NA 49/22 22 28 39 17 0.3 22800 29500 15000 NA 69/22 22 28 39 30 0.3 37500 55000 15000 25 NKI 25/20 25 29 38 20 0.3 21900 34000 15000 NKI 25/30 25 29 38 30 0.3 32500 57000 15000 NKIS 25 25 32 47 22 0.6 33500 43500 13000 NA 4905 25 30 42 17 0.3 23600 31500 14000 NA 6905 25 30 42 30 0.3 29000 59000 14000 28 NKI 28/20 28 32 42 20 0.3 23100 37500 14000 NKI 28/30 28 32 42 30 0.3 34500 63000 14000 NA 49/28 28 32 45 17 0.3 24400 33500 14000 NA 69/28 28 32 45 30 0.3 40500 63000 14000 30 NKI 30/20 30 35 45 20 0.3 24300 41500 13000 NKI 30/30 30 35 45 30 0.3 36500 69000 13000 NKIS 30 30 37 52 22 0.6 36500 50000 12000 NA 4906 30 35 47 17 0.3 25000 35500 13000 NA 6906 30 35 47 30 0.3 43500 71000 13000 32 NKI 32/20 32 37 47 20 0.3 24900 43500 12000 NKI 32/30 32 37 47 30 0.3 37000 73000 12000 NA 49/32 32 40 52 20 0.6 30500 47500 11000 NA 69/32 32 40 52 36 0.6 47000 82000 11000 35 NKI 35/20 35 40 50 20 0.3 26000 47000 11000 NKI 35/30 35 40 50 30 0.3 39000 79000 11000 NKIS 35 35 43 58 22 0.6 39000 57000 10000 NA 4907 35 42 55 20 0.6 31500 50000 11000 NA 6907 35 42 55 36 0.6 48000 86000 11000 TN=plastic retainer,permissible operational temperature 120??150??for temporary use,180??for short time only.1)for grease lub,the permissible value should be 60% of those in the list . +with retaining ring,no lubricating holes or grooces,please add ASR1 before the bearing code if oil holes or grooves are needed for your produces.