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Four Point Contact Ball Bearings: QJ
Able to take axial in both directions and some radial loads, the four point contact ball bearing also has a tight axial tolerance. It’s also known as the QJ bearing.
This type of bearing is found in applications such as compressors, linear actuators and gearboxes.
QJ Bearing Sizes
| Dimensions (mm) | Basic Load Ratings (kN) | Limiting Speed (RPM) | Mass (kg) |
Abutment and Fillet Dimensions (mm) | |||||||
| Part | Bore | Outer Diameter | Width | Minimum Chamfer | Dynamic Load | Static Load |
Oil | da | Da | ra | |
| Number | d | D | B | rsmin | Cr | C0r | Open | approx. | min | max | max |
| QJ205 | 25 | 52 | 15 | 1.0 | 27.1 | 21.2 | 22000 | 0.16 | 30.6 | 46.4 | 1.0 |
| QJ305 | 62 | 17 | 1.1 | 42.5 | 30.1 | 20000 | 0.29 | 32.0 | 55.0 | 1.0 | |
| QJ206 | 30 | 62 | 16 | 1.0 | 37.5 | 30.5 | 19000 | 0.24 | 36.0 | 56.0 | 1.0 |
| QJ306 | 72 | 19 | 1.1 | 53.0 | 41.5 | 17000 | 0.42 | 37.0 | 65.0 | 1.0 | |
| QJ207 | 35 | 72 | 17 | 1.1 | 41.0 | 61.5 | 16000 | 0.35 | 42.0 | 65.0 | 1.0 |
| QJ307 | 80 | 21 | 1.5 | 64.0 | 51.0 | 15000 | 0.57 | 44.0 | 71.0 | 1.5 | |
| QJ208 | 40 | 80 | 18 | 1.1 | 56.0 | 49.0 | 15000 | 0.45 | 47.0 | 73.0 | 1.0 |
| QJ308 | 90 | 23 | 1.5 | 78.0 | 64.0 | 14000 | 0.78 | 49.0 | 81.0 | 1.5 | |
| QJ209 | 45 | 85 | 19 | 1.1 | 63.0 | 56.0 | 14000 | 0.52 | 52.0 | 78.0 | 1.0 |
| QJ309 | 100 | 25 | 1.5 | 100.0 | 83.0 | 12000 | 1.05 | 50.8 | 91.0 | 1.5 | |
| QJ210 | 50 | 90 | 20 | 1.1 | 65.5 | 61.0 | 13000 | 0.59 | 57.0 | 83.0 | 1.0 |
| QJ310 | 110 | 27 | 2.0 | 118.0 | 100.0 | 11000 | 1.35 | 60.0 | 100.0 | 2.0 | |
| QJ211 | 55 | 100 | 21 | 1.5 | 85.0 | 83.0 | 11000 | 0.77 | 64.0 | 91.0 | 1.5 |
| QJ311 | 120 | 29 | 2.0 | 137.0 | 118.0 | 10000 | 1.75 | 65.0 | 110.0 | 2.0 | |
| QJ212 | 60 | 110 | 22 | 1.5 | 96.5 | 93.0 | 10000 | 0.99 | 69.0 | 101.0 | 1.5 |
| QJ312 | 130 | 31 | 2.1 | 156.0 | 137.0 | 9000 | 2.15 | 72.0 | 118.0 | 2.0 | |
| QJ213 | 65 | 120 | 23 | 1.5 | 110.0 | 112.0 | 9500 | 1.20 | 74.0 | 111.0 | 1.5 |
| QJ313 | 140 | 33 | 2.1 | 176.0 | 156.0 | 8500 | 2.70 | 77.0 | 128.0 | 2.0 | |
| QJ214 | 70 | 125 | 24 | 1.5 | 120.0 | 122.0 | 9000 | 1.30 | 68.3 | 116.0 | 1.5 |
| QJ314 | 150 | 35 | 2.1 | 200.0 | 180.0 | 8000 | 3.15 | 82.0 | 138.0 | 2.0 | |
| QJ215 | 75 | 130 | 25 | 1.5 | 125.0 | 132.0 | 8500 | 1.45 | 84.0 | 121.0 | 1.5 |
| QJ315 | 160 | 37 | 2.1 | 187.0 | 320.0 | 7500 | 3.90 | 87.0 | 148.0 | 2.0 | |
| QJ216 | 80 | 140 | 26 | 2.0 | 146.0 | 156.0 | 8000 | 1.85 | 90.0 | 130.0 | 2.0 |
| QJ316 | 170 | 39 | 2.1 | 202.0 | 360.0 | 7000 | 4.60 | 92.0 | 158.0 | 2.0 | |
| QJ217 | 85 | 150 | 28 | 2.0 | 156.0 | 173.0 | 7500 | 2.20 | 95.0 | 140.0 | 2.0 |
| QJ317 | 180 | 41 | 3.0 | 250.0 | 255.0 | 6700 | 5.34 | 99.0 | 166.0 | 2.5 | |
| QJ218 | 90 | 160 | 30 | 2.0 | 186.0 | 200.0 | 7000 | 2.75 | 100.0 | 150.0 | 2.0 |
| QJ318 | 190 | 43 | 3.0 | 285.0 | 305.0 | 6300 | 6.40 | 104.0 | 176.0 | 2.5 | |
| QJ219 | 95 | 170 | 32 | 2.1 | 212.0 | 232.0 | 6700 | 3.35 | 107.0 | 158.0 | 2.0 |
| QJ319 | 200 | 45 | 3.0 | 305.0 | 340.0 | 6000 | 7.40 | 109.0 | 186.0 | 2.5 | |
| QJ220 | 100 | 180 | 34 | 2.1 | 236.0 | 265.0 | 6300 | 4.00 | 112.0 | 168.0 | 2.0 |
| QJ320 | 215 | 47 | 3.0 | 345.0 | 400.0 | 5600 | 9.30 | 114.0 | 201.0 | 2.0 | |