Page 108 of Needle Roller Bearings by NTN Corporation Japan

drawn cup needle roller bearings sealed type type hk l type hmk l type hk ll type hmk ll type bk l ntn type hk l type hmk l type hk ll type hmk ll opened end and single-side seal type opened end and double-side seal type fw 25 50mm boundary dimensions mm c1 0 0.2 basic load ratings dynamic static dynamic static n kgf c3 max cr cor cr cor fw d c2 0 0.2 limiting speeds r/min grease bearing numbers open end single seal open end double seal closed end single seal 25 33 33 35 37 37 18 23 21 26 20 15 800 21 800 17 300 23 600 13 000 2.7 18 100 24 200 31 000 27 500 14 000 2.7 19 700 20 200 36 000 38 500 15 100 2.7 21 100 23 100 41 000 2.7 21 600 33 000 31 500 48 000 21 000 31 500 27 600 32 500 19 500 30 000 34 500 47 000 38 000 22 800 35 000 26 200 54 500 61 000 26 000 40 000 32 500 67 500 43 000 53 000 63 000 82 500 1 610 2 220 1 760 2 410 1 320 1 850 2 470 3 150 2 800 1 430 2 000 2 060 3 650 3 900 1 540 2 150 2 350 4 150 2 210 3 350 3 200 4 900 2 140 3 200 2 820 3 350 1 990 3 050 3 500 4 800 3 850 2 320 3 600 2 670 5 550 6 250 2 660 4 100 3 300 6 900 4 400 5 400 6 450 8 450 6 500 6 500 5 500 5 500 5 500 5 500 5 500 5 500 5 000 4 600 4 600 4 600 4 600 4 200 4 000 4 000 4 000 4 000 3 600 3 600 3 200 3 200 hmk2518l hmk2523l hmk2521ll hmk2526ll hk 2820ll 28 23 26 16 hmk2823l hmk2826ll hk 3016ll 30 37 40 40 18 23 28 23 20 26 31 26 16 hk 3018l hmk3023l hmk3028l hmk3223l hk 3020ll hmk3026ll hmk3031ll hmk3226ll hk 3516ll bk3018l 32 42 42 35 42 45 45 18 18 28 28 20 21 31 31 16 hk 3518l hmk3518l hmk3528l hmk3828l hk 3520ll hmk3521ll hmk3531ll hmk3831ll hk 4016ll bk3518l 38 48 47 40 47 50 50 18 18 28 18 23 22 28 20 21 31 20 26 24 31 hk 4018l hmk4018l hmk4028l hk 4518l hmk4523l hk 5022l hmk5028l hk 4020ll hmk4021ll hmk4031ll hk 4520ll hmk4526ll hk 5024ll hmk5031ll bk4018l 45 52 55 58 62 bk4518l 50 2.7 bk5022l note 1 bearing with inner ring is represented by hk+ir refer to inner ring dimensions table on page b-119 to b123 ex hk5022l ir45 50 25 b-46

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