SKF axial 4 Point miniature angular contact bearings QJ320 Z2
1. Angular Contact Bearing Specification :
| Bearing type | Angular Contact Bearing |
| Bearing Model | QJ320 |
| Brand | SKF/ FAG / GQZ / AAA |
| Size (mm) | 100*215*47 |
| Weight (kg) | 9.3 KG |
| Stock | Enough |
| Lubrication | Oil |
| Application | Automobiles, Rolling Mill, Mining, Metallurgy |
2. Angular contact ball bearings features :
Angular contact ball bearings: 7000C-type (α = 15 °), 7000AC-type (α = 25 °) and 7000B (α = 40 °) of several types. The kinds of bearings in the outer ring lock port, the general separation of inside and outside the ring can not be combined radial and axial load and axial load in one direction. Axial load capacity of the decision by the contact angle, contact angle is greater, the ability to withstand high axial loads. This kind of bearing shaft or housing to limit axial displacement in one direction.
3. The type of angular contact ball bearing
Single Row Angular contact ball bearing: 7100series, 7200series, 7300series, 7400series
Double Row Angular contact ball bearing: 52series, 53series,3200series,3300series
Combined angular contact ball bearing
Four point contact ball bearing
4 . Competitive Advantage:
a. Compare with the trading company, as we have our own factory
b. Compare with the factory we are easy communicated.
c. Our products were produced under strict quality test system.
5 . Specifications:
NSK Four Point Contact Bearing QJ320
1. High Speed
2. High Precision
3. Long Life
4. Higher Radial and Axial Loads
6 . We also can offer following bearings :
| Bearing No. | Boundary Dimensions(mm) | Basic Load Ratings(N) | Limiting Speeds(RPM) | Mass(kg) | |||||
| d | D | B | r min | Ca | C0a | Grease | Oil | approx | |
| QJ1018 | 90 | 140 | 24 | 1.5 | 94 000 | 208 000 | 3 400 | 4 800 | 1.45 |
| QJ218 | 160 | 30 | 2 | 164 000 | 320 000 | 3 200 | 4 300 | 2.75 | |
| QJ318 | 190 | 43 | 3 | 235 000 | 450 000 | 2 800 | 3 800 | 6.4 | |
| QJ1019 | 95 | 145 | 24 | 1.5 | 96 500 | 220 000 | 3 400 | 4 500 | 1.5 |
| QJ219 | 170 | 32 | 2.1 | 177 000 | 340 000 | 3 000 | 4 000 | 3.35 | |
| QJ319 | 200 | 45 | 3 | 251 000 | 495 000 | 2 600 | 3 600 | 7.4 | |
| QJ1020 | 100 | 150 | 24 | 1.5 | 98 500 | 232 000 | 3 200 | 4 300 | 1.6 |
| QJ220 | 180 | 34 | 2.1 | 199 000 | 390 000 | 2 800 | 3 800 | 4 | |
| QJ320 | 215 | 47 | 3 | 300 000 | 640 000 | 2 400 | 3 400 | 9.3 | |
| QJ1021 | 105 | 160 | 26 | 2 | 115 000 | 269 000 | 3 000 | 4 000 | 2 |
| QJ221 | 190 | 36 | 2.1 | 217 000 | 435 000 | 2 600 | 3 600 | 4.7 | |
| QJ321 | 225 | 49 | 3 | 305 000 | 640 000 | 2 400 | 3 200 | 10.5 | |
| QJ1022 | 110 | 170 | 28 | 2 | 139 000 | 315 000 | 2 800 | 3 800 | 2.5 |
| QJ222 | 200 | 38 | 2.1 | 235 000 | 490 000 | 2 600 | 3 400 | 5.6 | |
| QJ322 | 240 | 50 | 3 | 320 000 | 710 000 | 2 200 | 3 000 | 12.5 | |
| QJ1024 | 120 | 180 | 28 | 2 | 147 000 | 350 000 | 2 600 | 3 600 | 2.65 |
| QJ224 | 215 | 40 | 2.1 | 265 000 | 585 000 | 2 400 | 3 200 | 6.9 | |
| QJ324 | 260 | 55 | 3 | 360 000 | 835 000 | 2 000 | 2 800 | 15.4 | |
Company information
FAQ
How do I determine the correct contact angle for my Angular Contact Ball Bearing application?
Choosing the right contact angle for an Angular Contact Ball Bearing is crucial for optimal performance. The contact angle, typically ranging from 15° to 40°, determines the bearing's axial load capacity. Lower angles (e.g., 15°-25°) are suited for applications with moderate axial loads but require high-speed rotation, such as in electric motors. Higher angles (e.g., 30°-40°) can withstand heavier axial loads, making them ideal for gearboxes or pumps. Understanding the specific operational requirements, including load type and magnitude, rotational speed, and precision needs, will guide you in selecting the Angular Contact Ball Bearing with the most appropriate contact angle.
What is preload, and why is it important in the context of Angular Contact Ball Bearings?
Preload in Angular Contact Ball Bearings refers to intentionally introducing a slight axial load during assembly to remove play between the balls and races, enhancing rigidity and precision. This is particularly important in high-precision machinery like CNC machines, where minimal backlash and high stability are required. By carefully adjusting the preload, the bearing's running accuracy and stiffness can be optimized. However, excessive preload can lead to increased friction, heat generation, and reduced bearing life. Therefore, a balanced preload setting is vital to exploit the full potential of Angular Contact Ball Bearings without compromising their longevity.
