Determination of Interference Fit
Source: China Bearing Network | Time: 2013-02-01
| /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; |
Tapered bore bearings have always relied on interference fit to ensure proper performance. The reduction in radial internal clearance or the axial displacement of the inner ring on its conical journal is used to determine and measure the level of interference.
There are several methods available for measuring the amount of interference, each suitable for different types of bearings and applications:
1. **Feeler Gauge Method**: This involves measuring the radial internal clearance before and after installation. It's particularly effective for large and medium-sized spherical and CARB bearings. The best approach is to measure the clearance between the outer ring and the unloaded roller.
2. **Nut Tightening Angle Method**: This method has been widely used and proven effective for small and medium-sized bearings. By determining the tightening angle of the nut, you can assess the correct interference. Standard values for the angle are now established to help position the bearing accurately on the conical journal.
3. **Axial Push Interval Measurement**: This technique measures the distance the inner ring moves axially during installation. It’s commonly used for tapered bore bearings and provides a reliable way to estimate interference.
4. **Inner Ring Expansion Measurement**: For larger bearings, measuring the expansion of the inner ring gives highly accurate results. This method is ideal for spherical and CARB bearings that require precise positioning on the shaft.
One of the most advanced and efficient techniques is the **SKF Push Method**. This method uses a hydraulic nut equipped with a dial gauge and a specially calibrated digital metering device connected to an oil pump. The system calculates the necessary oil pressure and axial displacement required for proper interference fit. These values help ensure that the bearing is correctly positioned and secured.
For even more precision, especially with large bearings, there are specialized tools like **SensorMount?**, which integrates sensors directly into the bearing’s inner ring. This allows for real-time measurement using a handheld indicator and standard hydraulic systems. Whether the shaft is solid or hollow, this method simplifies the process and ensures accurate results.
In summary, choosing the right method depends on the type of bearing, its size, and the application requirements. Proper interference fit is essential for ensuring the longevity and performance of any bearing system.
Recommended for friends:
Comments | Close Window
| Bearing Related Knowledge |
Selection of Ten Elements Roll Bearings for Judging the Quality of Imported Bearings
INA linear rolling bearing and linear sliding bearing features detailed explanation of various fan bearing skills to choose the quiet, efficient radiator thrust tapered roller bearing layout, functional features?
|
This article links to http://
Please indicate the bearing network http://
Previous: Common vocabulary of machinery (2)
Next: Analysis: Bearing industry development and the need for CNC equipment
Fiberglass Screen
Fiberglass screens have become a popular choice for homeowners seeking a reliable and durable solution for their windows and doors. These screens are made from a high-quality fiberglass material that offers numerous benefits. With their fine mesh construction, fiberglass screens effectively keep out insects and pests while allowing fresh air and natural light to flow through. They are also resistant to corrosion, rust, and fading, making them ideal for long-term use. Additionally, fiberglass screens are easy to install and maintain, providing a practical and cost-effective solution for creating a comfortable and bug-free environment indoors. Whether you're looking to improve ventilation or protect against unwanted pests, fiberglass screens offer a reliable and visually appealing option.
Fiberglass Insect Screen,Fiberglass Insect Window Screen,Fiberglass Insect Screen Roll Net,Fiberglass Insect Window Net
Jinwu Glass Fiber Co., Ltd , https://www.jwglassfiber.com