GB/T 304.1-2017 in English
VALIDSpherical plain bearings-Classification
- Issued on:2017-11-01
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Within 1 day
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| Standard No: | GB/T 304.1-2017 |
| Document status: | VALID |
| Title in English: | Spherical plain bearings-Classification |
| Title in Chinese: | 关节轴承 分类 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2017-11-01 |
| Implemented on: | 2018-05-01 |
| Superseding: |
GB/T 304.1-2002 Spherical plain bearings--Classification
|
| ICS Classification: | 21.100.10-Plain bearings |
| Chinese Classification: | J11-Rolling bearing |
| Professional Classification: | GB-National Standard |
| Related Keywords: | spherical plain bearings
radial spherical plain bearings low-friction radial spherical plain bearings maintenance-free self-lubricating spherical plain bearings spherical plain bearing |
| Related Topics: | GB/T 304.1
GB/T 304.1-2002 GBT304.1-2017 Oil-containing bearing materials Spherical bearing implementation Spherical Bearings International |
《GB/T 304.1-2017关节轴承 分类》由TC98（全国滚动轴承标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
In-depth interpretation of the National Standard of the People's Republic of China GB/T 304.1—2017 Classification of Spherical Joint Bearings
Background of Standard Formulation and Analysis of Technological Evolution
Spherical joint bearings are an important mechanical component, widely used in aerospace, automobile, shipbuilding and other fields. GB/T 304.1—2017 "Classification of Spherical Joint Bearings" is an important part of the national standard, which aims to unify and standardize the classification method of spherical joint bearings.
Classification Method of Joint Bearings
According to GB/T 304.1—2017, the classification of spherical plain bearings is mainly based on the following dimensions:
- Load direction and contact angle: divided into radial bearings, thrust bearings and angular contact bearings
- Outer ring structure: including integral outer ring, single-slit, double-slit and double-half outer ring
- Maintenance method: divided into maintenance-lubricated type and maintenance-free self-lubricating type
For example, radial spherical plain bearings are mainly used to bear radial loads, and the nominal contact angle is 0°≤τ≤30°. Its structural features include:
- Radial contact spherical plain bearing: nominal contact angle τ=0°, suitable for bearing radial loads
- Angular contact radial spherical plain bearing: nominal contact angle 0°<τ≤30°, suitable for combined loads
Structural types of spherical plain bearings
The standard lists in detail the common structural types of two types of spherical plain bearings: maintenance-lubricated type and maintenance-free self-lubricating type. The following is a simplified comparison table:
| Category | Structural features | Applicable scenarios |
|---|---|---|
| Maintenance lubrication type | Requires regular lubrication, suitable for high load and high precision requirements | Industrial machinery, aerospace equipment |
| Maintenance-free self-lubricating type | Built-in lubrication device, suitable for harsh environments | Automotive suspension system, marine equipment |
Implementation suggestions and application cases
In actual applications, companies should choose appropriate spherical bearing types according to specific needs. For example:
- Automobile suspension system: Maintenance-free self-lubricating spherical plain bearings are preferred
- Aerospace equipment: High-precision, low-friction radial spherical plain bearings are recommended
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