Identifying Gear Oils For Continuous Mixers
Identifying Gear Oils for Continuous Mixers
Counterfeit or substandard gear lubricants for continuous internal mixers often contain low-quality additives. These products typically utilize chlorinated paraffins in improper quantities or ratios, resulting in compromised performance. Authentic gear oils can be distinguished from inferior alternatives through the following characteristics:
1. Visual Indicators:
- Substandard lubricants frequently exhibit a dark black coloration
- Visible separation or sedimentation may occur
- Presence of chlorine-based additives (detectable through elemental analysis)
2. Performance Issues:
- Rapid viscosity increase during oxidation
- Excessive sludge and deposit formation in gear systems
- Poor thermal-oxidative stability and viscosity-temperature properties
3. Composition Risks:
Counterfeit products often blend base oils with unauthorized additives including:
- Residual asphalt
- Rubber byproducts
- Recycled lubricants
- Industrial impurities
Classification System (Aligned with Engine Oil Standards):
API GL Grades:
GL-1 to GL-6 (Increasing numerical value indicates higher performance level)
Note: GL-4 meets standard automotive requirements
SAE Viscosity Grades:
Low-temperature applications: 70W, 75W, 80W, 90
High-temperature applications: 140, 250
Modern HD gear oils (e.g., SAE 80W/90) offer broad operational temperature ranges
Application Characteristics:
- Primary use in reducer systems and rotating components (bearings, gears)
- Typical coloration ranges from deep black (standard gear oils) to yellow-green/dark brown-red (hypoid gear oils)
Nanjing COLOWE Chemical Machinery Co., Ltd. reminds users: Regular oil analysis and adherence to manufacturer specifications are critical for maintaining equipment performance and longevity. For additional technical resources, please refer to our professional knowledge base.
