Electric sliding clean door,Electric sliding double clean door,Electric sliding single clean door,Electric sliding unequal double clean door Shenzhen Yue Ma intelligent Technol , https://www.ymcleanroomdoor.comHigh-Speed Imported Bearing Device: Cooperation and Detailed Description of Clearance
High-speed bearings require precise alignment and fine dynamic balancing through an imported bearing position reversal system. The shaft and housing bore must meet higher standards for dimensional and shape accuracy compared to general bearings. Special attention should be given to coaxiality and the straightness of the shoulder relative to the bore or shaft neck.
When considering high-speed bearing applications, it's essential to account for both thermal and mechanical effects. High-speed bearings are not only subjected to high rotational speeds but also to elevated temperatures. This means that two critical factors must be considered when determining the fit and clearance:
1. **Thermal expansion and material softening** as temperature increases.
2. **Centrifugal forces** at high speeds, which can cause deformation and stress in the bearing components.
The raceway deformation after installation should be minimized. Excessive interference fit is not recommended, as it may lead to excessive pressure on the mating surfaces, potentially causing looseness. Therefore, the interference fit must be carefully calculated, taking into account both thermal and centrifugal effects.
At normal temperatures and speeds, a standard interference fit might work, but for high-speed bearings, this approach may not be suitable. If the calculated interference is too large (especially under ultra-high-speed conditions), using a combination of under-smoothing and static-pressure smoothing techniques can help achieve a dmn value exceeding three million.
In addition to thermal effects, the thermal elongation of the shaft must also be considered when determining the clearance. The optimal clearance should be achieved when the inner and outer rings are properly aligned during operation. This ensures smooth performance and reduces internal friction.
It is important to note that high-speed bearings aim to minimize relative sliding and internal friction. Therefore, adjusting the clearance by misaligning the inner and outer rings axially is not recommended for ball bearings.
Key considerations when designing the cooperation and clearance for high-speed bearings include:
- The bearing material becomes more flexible and prone to deformation at high temperatures.
- Repeated temperature fluctuations can cause permanent deformation over time.
In summary, under high-speed and high-temperature conditions, maintaining the precision and functionality of the bearing is crucial. Proper selection of fit and clearance plays a vital role in ensuring long-term performance and reliability.
/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Recommended Articles:
- Torque, Load, and Life of a Small Grease-Lubricated Bearing for High-Speed Spindle Bearings
- Analysis of Internal Clearance in NMB Bearings: Common Causes of Bearing Grinding
- Three Reasons and Solutions for NSK Bearing Noise
This article is linked from http://
Please cite China Bearing Network http://
Previous: Bearing Crack Disposal Method
Next: Disassembly and Use of Magnetic Pump Bearings
High-speed imported bearing device cooperation and detailed description of its play
Source: Bearing Network | Date: May 21, 2013