Four-point contact ball bearings are radial single row angular contact ball bearings with raceways that are designed to support axial loads in both directions. For a given axial load, a limited radial load can also be supported (Load ratio). The bearings are separable, i.e. the outer ring with ball and cage assembly can be mounted separately from the two inner ring halves.
Principal dimensions | Basic load ratings | Speed ratings | Designation | |||
dynamic | static | Limiting speed | ||||
d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | [r/min] | |
15 | 35 | 11 | 12.7 | 8.3 | 36000 | QJ 202 N2MA |
17 | 40 | 12 | 17 | 11.4 | 30000 | QJ 203 N2MA |
47 | 14 | 23.4 | 15 | 28000 | QJ 303 N2MA | |
20 | 52 | 15 | 32 | 21.6 | 24000 | QJ 304 MA |
52 | 15 | 32 | 21.6 | 24000 | QJ 304 N2MA | |
52 | 15 | 32 | 21.6 | 24000 | QJ 304 N2PHAS | |
25 | 52 | 15 | 27 | 21.2 | 22000 | QJ 205 MA |
62 | 17 | 42.5 | 30 | 20000 | QJ 305 MA | |
62 | 17 | 42.5 | 30 | 20000 | QJ 305 N2MA | |
30 | 62 | 16 | 37.5 | 30.5 | 19000 | QJ 206 MA |
62 | 16 | 37.5 | 30.5 | 19000 | QJ 206 N2MA | |
72 | 19 | 53 | 41.5 | 17000 | QJ 306 MA | |
72 | 19 | 53 | 41.5 | 17000 | QJ 306 N2MA | |
72 | 19 | 53 | 41.5 | 17000 | QJ 306 N2PHAS | |
35 | 72 | 17 | 49 | 41.5 | 17000 | QJ 207 N2MA |
80 | 21 | 64 | 51 | 15000 | QJ 307 MA | |
80 | 21 | 64 | 51 | 15000 | QJ 307 N2MA | |
80 | 21 | 64 | 51 | 15000 | QJ 307 N2PHAS | |
40 | 80 | 18 | 56 | 49 | 15000 | QJ 208 MA |
80 | 18 | 56 | 49 | 15000 | QJ 208 N2MA | |
80 | 18 | 56 | 49 | 15000 | QJ 208 PHAS | |
90 | 23 | 78 | 64 | 14000 | QJ 308 MA | |
90 | 23 | 78 | 64 | 14000 | QJ 308 N2PHAS | |
45 | 85 | 19 | 63 | 56 | 14000 | QJ 209 MA |
100 | 25 | 100 | 83 | 12000 | QJ 309 MA | |
100 | 25 | 100 | 83 | 12000 | QJ 309 N2MA | |
100 | 25 | 100 | 83 | 12000 | QJ 309 N2PHAS | |
100 | 25 | 100 | 83 | 12000 | QJ 309 PHAS | |
50 | 90 | 20 | 65.5 | 61 | 13000 | QJ 210 MA |
110 | 27 | 118 | 100 | 11000 | QJ 310 MA | |
110 | 27 | 118 | 100 | 11000 | QJ 310 PHAS | |
55 | 100 | 21 | 85 | 83 | 11000 | QJ 211 MA |
120 | 29 | 137 | 118 | 10000 | QJ 311 MA | |
120 | 29 | 137 | 118 | 10000 | QJ 311 N2MA | |
60 | 110 | 22 | 96.5 | 93 | 10000 | QJ 212 MA |
110 | 22 | 96.5 | 93 | 10000 | QJ 212 N2MA | |
110 | 22 | 96.5 | 93 | 10000 | QJ 212 N2PHAS | |
130 | 31 | 156 | 137 | 9000 | QJ 312 MA | |
130 | 31 | 156 | 137 | 9000 | QJ 312 PHAS | |
65 | 120 | 23 | 110 | 112 | 9500 | QJ 213 MA |
120 | 23 | 110 | 112 | 9500 | QJ 213 N2MA | |
120 | 23 | 110 | 112 | 9500 | QJ 213 N2PHAS | |
140 | 33 | 176 | 156 | 8500 | QJ 313 MA | |
140 | 33 | 176 | 156 | 8500 | QJ 313 N2PHAS | |
70 | 125 | 24 | 120 | 122 | 9000 | QJ 214 N2MA |
125 | 24 | 120 | 122 | 9000 | QJ 214 N2PHAS | |
150 | 35 | 200 | 180 | 8000 | QJ 314 MA | |
150 | 35 | 200 | 180 | 8000 | QJ 314 N2MA | |
150 | 35 | 200 | 180 | 8000 | QJ 314 N2PHAS | |
75 | 130 | 25 | 125 | 132 | 8500 | QJ 215 MA |
130 | 25 | 125 | 132 | 8500 | QJ 215 N2MA | |
130 | 25 | 125 | 132 | 8500 | QJ 215 N2PHAS | |
160 | 37 | 216 | 200 | 7500 | QJ 315 N2MA | |
160 | 37 | 216 | 200 | 7500 | QJ 315 N2PHAS | |
80 | 140 | 26 | 146 | 156 | 8000 | QJ 216 MA |
140 | 26 | 146 | 156 | 8000 | QJ 216 N2MA | |
170 | 39 | 232 | 228 | 7000 | QJ 316 N2MA | |
170 | 39 | 232 | 228 | 7000 | QJ 316 N2PHAS | |
85 | 130 | 22 | 99.5 | 114 | 8000 | QJ 1017 N2MA/C4 |
150 | 28 | 156 | 173 | 7500 | QJ 217 MA | |
150 | 28 | 156 | 173 | 7500 | QJ 217 N2MA | |
180 | 41 | 250 | 255 | 6700 | QJ 317 N2MA | |
90 | 160 | 30 | 186 | 200 | 7000 | QJ 218 N2MA |
190 | 43 | 285 | 305 | 6300 | QJ 318 N2MA | |
190 | 43 | 285 | 305 | 6300 | QJ 318 N2PHAS | |
95 | 170 | 32 | 212 | 232 | 6700 | QJ 219 N2MA |
170 | 32 | 212 | 232 | 6700 | QJ 219 N2PHAS | |
200 | 45 | 305 | 340 | 6000 | QJ 319 N2MA | |
200 | 45 | 305 | 340 | 6000 | QJ 319 N2PHAS | |
100 | 180 | 34 | 236 | 265 | 6300 | QJ 220 N2MA |
215 | 47 | 345 | 400 | 5600 | QJ 320 N2MA |