GB/T 28773-2024 in English
VALIDTooth-wedge belts
- Issued on:2024-10-26
- Implemented on:2025-05-01
- File Format:PDF
- Delivery:Via email within 5 business days
$301.00
| Standard No: | GB/T 28773-2024 |
| Document status: | VALID |
| Title in English: | Tooth-wedge belts |
| Title in Chinese: | 齿楔带 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2024-10-26 |
| Implemented on: | 2025-05-01 |
| Superseding: |
GB/T 28773-2012 Tooth-wedge belts
|
| ICS Classification: | 21.220.10-Belt drives and their components |
| Chinese Classification: | J18-Chain drive, belt drive and key joint |
| Professional Classification: | GB-National Standard |
| Related Keywords: | tooth-wedge belts introduction gb/t28773-2024 technical requirements
toothed wedge belts wedge belts storage tooth type pitch load transmission system r type |
《GB/T 28773-2024齿楔带》由TC428（全国带轮与带标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
GB/T28773-2024 Technical requirements and standard interpretation of toothed wedge belts
1. Standard revision background and technology evolution analysis
Since the first release of this standard in 2012, with the advancement of industrial technology and changes in market demand, the original technical specifications can no longer fully meet the requirements of modern transmission systems. This revision has comprehensively updated GB/T28773-2012, with improvements mainly in the following aspects:
- Added dimensional parameters of R12M series toothed wedge belts
- Optimized the technical requirements for H and S type toothed wedge belts
- Supplemented new test methods and inspection rules
- Added requirements for marking, packaging, transportation and storage
| Tooth type | Pitch (mm) | Tooth height (mm) | Applicable scenarios |
|---|---|---|---|
| H type | 8, 14 | 3.38-6.02 | Applicable to medium load transmission system |
| R type | 8, 12, 14 | 3.25-6.13 | Applicable to high precision transmission system |
| S type | 8, 14 | 3.05-5.30 | Applicable to light load transmission system |
2. Interpretation of technical requirements
According to GB/T28773-2024, the technical requirements of toothed wedge belts are mainly reflected in the following aspects:
2.1 Appearance quality
Belt wedges and belt teeth should not have defects such as distortion, cracks, bubbles, etc. Specific requirements include:
- More than 3 consecutive pores or bubbles are unqualified
- The diameter of a single pore shall not exceed 0.8mm
- The tooth surface should be flat and free of damage
2.2 Physical Properties
Tensile strength and tooth shear strength are important indicators for measuring the quality of toothed wedge belts:
| Model | Tensile strength (N/mm) | Tooth shear strength (N/mm) |
|---|---|---|
| H8M, R8M, S8M | ≥750 | ≥60 |
| R12M | ≥850 | ≥80 |
| H14M, R14M, S14M | ≥900 | ≥90 |
3. Implementation suggestions
To ensure that the performance of the toothed wedge belt meets the standard requirements, it is recommended to take measures in the following aspects:
- Production stage:Strictly control the quality of raw materials and production processes, and conduct regular quality inspections.
- Testing stage:Equipped with professional measuring devices and test equipment to ensure that all indicators meet the requirements.
- Usage stage:Store in accordance with the storage conditions specified in the standard to avoid high temperature and high humidity environments.
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