Switchable Glass,Electrochromic Glass,Smart Glass Windows,Switchable Smart Glass Huaian Hongrui Glass Co.,Ltd , https://www.hongruiglass.comSelection and Application of "High Precision SKF Imported Bearings"
**1. Selection of High-Precision Bearings**
High-precision bearings are designed to provide exceptional rotational accuracy, dimensional precision, and minimal surface roughness. In China’s standards, these bearings typically fall under the P4 grade or higher, with P2 being considered high-precision as well. These specifications correspond to ABEC 7 and ABEC 9 in the U.S., and ISO P4 and P2 internationally. Many countries, such as Japan, Germany, and France, recognize and adopt these international standards.
While all types of rolling bearings can achieve high-precision requirements after fine processing, angular contact ball bearings are most commonly used in high-precision applications. For high-precision and rigid machine tool spindles, double-row short cylindrical roller bearings are also widely used, followed by tapered roller bearings.
With advancements in bearing manufacturing technology, the actual precision of high-quality bearings often exceeds industry norms. For example, the roundness of machine tool ball bearings can be as low as 0.3 μm, while computer spindle bearings may reach 0.25 μm.
When selecting high-precision bearings for users, it is recommended to prioritize the three main types mentioned above. However, not all standard sizes will have high-precision options available. It is essential to check samples from manufacturers or suppliers, or place inquiries to ensure availability. Generally, P4-grade bearings are more readily available, while P2-grade bearings are usually custom-ordered. The production of high-precision bearings often starts with trial runs and requires careful quality control.
**2. Methods for Achieving High-Precision Spindle Support**
To achieve a high-precision spindle support system, the following principles can be applied:
**(1) Select High-Precision Bearings**
Choose bearings that meet the required precision levels and improve their performance through proper installation and maintenance techniques.
**(2) Apply Advanced Installation Techniques**
For example, use error cancellation methods to enhance device accuracy, apply the small interference method to reduce raceway deformation, and adjust clearances to improve positioning and rotation accuracy.
**(3) Eliminate Factors Affecting Bearing Accuracy**
Identify and eliminate sources of wear, misalignment, or contamination that could compromise the bearing's performance over time.
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**Related Bearing Knowledge**
- Analyze the cracking failure of the bearing block
- NTN bearing brand analysis: Understanding common damage methods of rolling bearings
- Five principles for normal bearing operation
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Selection and application of "high precision SKF imported bearings"
**Selection and Application of "High Precision SKF Imported Bearings"**
Home > Bearing Knowledge > Selection and Application of "High Precision SKF Imported Bearings"
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Source: China Bearing Network | Time: 2013-03-09