Luoyang east axis YRTS high-speed turntable bearing series:
Luoyang east shaft YRTS high-speed turntable bearing (YRTS turntable bearing for short) series has the same external structure size as YRT series, but its internal structure is different from YRT series, which determines that the limit speed of YRTS turntable bearing series is higher than YRT turntable bearing series, and the friction torque is lower and more uniform than YRT turntable bearing series. therefore, for occasions requiring relatively low friction but relatively high speed, this series can be selected, such as bearings used for shafts driven by direct driver.
Luoyang east axis YRT turntable bearing features: axial/radial bearing YRTS.
Because the YRTS bearing of Luoyang East Axis has the characteristics of high limit speed and low stable friction torque, it is especially suitable for engines with torque.
| Bearing Type |
Dimension |
The fixing hole |
| |
d |
D |
H |
H1 |
H2 |
C |
d1 |
dn |
dm |
Inner ring |
Outer ring |
| |
:mm
Unit:mm |
do |
ds |
Ts |
4)QTY4) |
dL |
4)QTY4) |
| |
|
mm |
|
mm |
|
| YRTS200 |
200 |
300 |
45 |
30 |
15 |
15 |
274 |
215 |
285 |
7 |
11 |
6.2 |
46 |
7 |
45 |
| YRTS260 |
260 |
385 |
55 |
36.5 |
18.5 |
18 |
345 |
280 |
365 |
9.3 |
15 |
8.2 |
34 |
9.3 |
33 |
| YRTS325 |
325 |
450 |
60 |
40 |
20 |
20 |
415 |
342 |
430 |
9.3 |
15 |
8.2 |
34 |
9.3 |
33 |
| YRTS395 |
395 |
525 |
65 |
42.5 |
22.5 |
20 |
486 |
415 |
505 |
9.3 |
15 |
8.2 |
46 |
9.3 |
45 |
| YRTS460 |
460 |
600 |
70 |
46 |
24 |
22 |
560 |
482 |
580 |
10 |
15 |
8.2 |
46 |
9.3 |
45 |
What is the meaning of the precision grade of the bearing, and what influence does the high precision have on the performance of the bearing? Is P6 precision high or P4 precision high for preson bearings? Is the bearing more expensive with higher precision? The accuracy of rolling bearings is divided into (mainly) dimensional accuracy and rotational accuracy. Accuracy has been standardized and can be divided into six levels: 0, 6X, 6, 5, 4 and 2. The accuracy is improved in turn from level 0, which is sufficient for general use, but when used in the conditions or occasions shown in Table 1, the accuracy of level 5 or higher is required. Although the above precision grades are based on ISO standards, their titles are different in national standards. Dimensional accuracy (items related to shaft and shell installation). 1. allowable deviation of inner diameter, outer diameter, width and assembly width. 2. Allowable deviation of inner last contact diameter and outer last contact diameter of roller group. 3. Allowable limit value of chamfer dimension. 4. Allowable variation of width.
When the axes with two or more bearings are coupled, incorrect linear deviation or angular skew will occur. Countermeasures; Adjust the correct alignment by adjusting tabs to ensure that the axes are coupled in a straight line, especially when there are three or more bearings running on the important official. 11, the diameter of the shaft is too large, resulting in excessive expansion of the inner ring, reducing bearing clearance. Countermeasures: Grind the shaft diameter to obtain a proper fit between the shaft and the inner ring of the bearing. Use bearings with large radial clearance. 12. Because the material of bearing box hole is too soft and the bore diameter becomes larger after being stressed, the outer ring slips in the box hole. Countermeasures: Improve the material of the box body or machine a steel bushing to squeeze into the box hole, and then machine the inner hole of the bushing to the correct size.
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