Page 432 - Rollingbearings

3.4 Four-point contact ball bearings
d 15 – 65 mm

B
r 2
r 1
r 1
r 2

D D 1 d d 1 d 1

3
0.0.4
a

Basic design SKF Explorer bearing Bearing with locating slots

Principal dimensions Basic load ratings Fatigue Limiting Mass Designations
dynamic static load limit speed Bearing
with locating without
d D B C C 0 P u slots 1) locating slots

mm kN kN r/min kg –

15 35 11 12,7 8,3 0,355 36 000 0,062 QJ 202 N2MA –

17 40 12 17 11,4 0,48 30 000 0,082 QJ 203 N2MA –
47 14 23,4 15 0,64 28 000 0,14 QJ 303 N2MA –

20 52 15 32 21,6 0,93 24 000 0,18 QJ 304 N2MA ▶ QJ 304 MA
52 15 32 21,6 0,93 24 000 0,18 QJ 304 N2PHAS –

25 52 15 27 21,2 0,9 22 000 0,16 QJ 205 N2MA –
62 17 42,5 30 1,27 20 000 0,29 QJ 305 N2MA QJ 305 MA

30 62 16 37,5 30,5 1,29 19 000 0,24 QJ 206 N2MA ▶ QJ 206 MA
72 19 53 41,5 1,76 17 000 0,42 QJ 306 N2MA ▶ QJ 306 MA
72 19 53 41,5 1,76 17 000 0,42 QJ 306 N2PHAS –

35 72 17 49 41,5 1,76 17 000 0,35 QJ 207 N2MA –
80 21 64 51 2,16 15 000 0,57 QJ 307 N2MA ▶ QJ 307 MA
80 21 64 51 2,16 15 000 0,57 QJ 307 N2PHAS –

40 80 18 56 49 2,08 15 000 0,45 – ▶ QJ 208 MA
90 23 78 64 2,7 14 000 0,78 QJ 308 N2MA ▶ QJ 308 MA
90 23 78 64 2,7 14 000 0,78 QJ 308 N2PHAS –

45 85 19 63 56 2,36 14 000 0,52 – ▶ QJ 209 MA
100 25 100 83 3,55 12 000 1,05 QJ 309 N2MA ▶ QJ 309 MA
100 25 100 83 3,55 12 000 1,05 QJ 309 N2PHAS QJ 309 PHAS

50 90 20 65,5 61 2,6 13 000 0,59 – ▶ QJ 210 MA
110 27 118 100 4,25 11 000 1,35 – ▶ QJ 310 MA
110 27 118 100 4,25 11 000 1,35 – QJ 310 PHAS

55 100 21 85 83 3,55 11 000 0,77 QJ 211 N2MA ▶ QJ 211 MA
120 29 137 118 5 10 000 1,75 QJ 311 N2MA ▶ QJ 311 MA

60 110 22 96,5 93 4 10 000 0,99 QJ 212 N2PHAS –
110 22 96,5 93 4 10 000 0,99 QJ 212 N2MA ▶ QJ 212 MA
130 31 156 137 5,85 9 000 2,15 QJ 312 N2MA ▶ QJ 312 MA

130 31 156 137 5,85 9 000 2,15 – ▶ QJ 312 PHAS

65 120 23 110 112 4,75 9 500 1,2 QJ 213 N2PHAS –
120 23 110 112 4,75 9 500 1,2 QJ 213 N2MA ▶ QJ 213 MA
140 33 176 156 6,55 8 500 2,7 QJ 313 N2PHAS –

140 33 176 156 6,55 8 500 2,7 – ▶ QJ 313 MA

SKF Explorer bearing
▶ Popular item
1) For dimensions of locating slots † table 1, page 387
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