Aligning Heavy Duty Needle Roller Bearings With or Without Inner Ring

Shaft Diameter Bearing Designation Mass           Approx Boundary Dimensions Basic Load Rating    Limiting Speed
d FW / F D B / C D1      S Cr  Dynamic Cor Static Oil
mm g mm N rpm
without inner ring
15 RPNA15/28 32 　 15 28 12 24.5 　 4660 5700 24000
18 RPNA18/32 52 　 18 32 16 27 　 9800 14000 22000
20 RPNA20/35 62 　 20 35 16 30.5 　 10500 15500 21000
25 RPNA25/42 109 　 25 42 20 36.5 　 14900 27800 18000
28 RPNA28/44 112 　 28 44 20 38.5 　 20500 31900 16000
30 RPNA30/47 125 　 30 47 20 42 　 20980 33500 15000
35 RPNA35/52 131 　 35 52 20 47.5 　 21500 39600 13000
40 RPNA40/55 141 　 40 55 20 50.5 　 24000 44700 11000
45 RPNA45/62 176 　 45 62 20 58 　 24800 50900 10000
with inner ring
12 PNA12/28 37 12 15 28 12 24.5 0.5 4660 5700 24000
15 PNA15/32 62 15 18 32 16 27 0.5 9800 14000 22000
17 PNA17/35 73 17 20 35 16 30.5 0.5 10500 15500 21000
20 PNA20/42 136 20 25 42 20 36.5 0.5 14900 27800 18000
22 PNA22/44 145 22 28 44 20 38.5 0.5 20500 31900 16000
25 PNA25/47 157 25 30 47 20 42 0.5 20980 33500 15000
30 PNA30/52 181 30 35 52 20 47.5 0.5 21500 39600 13000
35 PNA35/55 177 35 40 55 20 50.5 0.5 24000 44700 11000
40 PNA40/62 227 40 45 62 20 58 0.5 24800 50900 10000

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