GB/T 7323-2019 in English
VALIDExtreme pressure lithium lubricating grease
- Issued on:2019-10-18
- Implemented on:2020-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$88.00
《GB/T 7323-2019极压锂基润滑脂》由TC280（全国石油产品和润滑剂标准化技术委员会）归口，TC280SC1（全国石油产品和润滑剂标准化技术委员会石油燃料和润滑剂分会）执行，主管部门为国家标准化管理委员会。
Introduction
Standard Evolution and Key Technology Changes
| Technical Parameters | GB/T7323-2008 | GB/T7323-2019 | Impact of Changes |
|---|---|---|---|
| Dropping Point (No. 1/2) | 175℃ | 180℃ | High Temperature Stability Improved by 15% |
| New Indicators | - | Oxidation Stability/Low Temperature Torque | Extend Equipment Service Life |
| Product Model | No. 00/0/1/2 | No. 3 added | Expanded industrial application scenarios |
Core performance indicator system
The standard stipulates that extreme pressure lithium-based grease must pass 12 key tests:
- Cone penetration classification: 00-3, a total of 5 viscosity grades, covering the range of 400-220 (0.1mm)
- Extreme pressure performance: Timken method OK value ≥133N, four-ball machine method Pb value ≥588N
- High temperature characteristics: Dropping point ≥165-180℃, evaporation amount ≤2.0% (99℃)
Typical cases of industrial applications
After a steel group's rolling mill bearings adopted No. 2 extreme pressure lithium-based grease:
- Bearing temperature decreased by 8-12℃
- Grease change cycle extended from 3 months to 6 months
- Annual maintenance cost reduced by 230,000 yuan
Implementation suggestions and precautions
- Selection principles:
- No. 00/0: centralized lubrication system
- No. 1/2: medium and low speed heavy-load bearings
- No. 3: gearbox and extreme working conditions
- Storage requirements: sealed and protected from light, shelf life 24 months
- Compatibility test: Compatibility test is required before changing the grease
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