Gear oil pumps are suitable for transporting various lubricating liquids at temperatures not exceeding 70°C. If high-temperature operation is required (up to 200°C), appropriate materials based on actual reports should be selected. The suitable viscosity range is 5×10⁻⁵ to 1.5×10⁻³ m²/s. This pump is not suitable for transporting corrosive liquids, those containing hard particles or fibers, or highly volatile/low flash point liquids such as gasoline or benzene.
1. Regular Lubrication
Since electric barrel pumps operate at high speed, lubricating grease tends to evaporate easily. Therefore, it’s essential to keep the bearing area clean and regularly replenish or replace the grease.
2. Routine Inspection & Maintenance
Regularly inspect internal wiring, power cords, plugs, switches, insulation resistance, commutator-brush contact, and whether armature/stator windings are intact. Also check for bearing or rotating part damage.
3. Component Preservation
During disassembly, keep all parts organized, especially explosion-proof components. Any damaged parts—particularly insulation pads or sleeves—should be replaced with components matching original specs.
4. Insulation Resistance Check
If the pump has been idle or stored in a damp environment, measure winding insulation resistance with a 500V megohmmeter before use. If resistance is below 7 MΩ, dry the winding before operation.
5. Proper Storage
Store electric pumps in a dry, clean, corrosion-free environment.
(1) Usage Taboos
Do not dilute gear oil with diesel or heat components (e.g., rear axle or gearbox) to ease cold starts. Doing so may degrade the oil, requiring replacement with lower-viscosity multigrade oil.
(2) Avoid Using Incorrect Gear Oil Types
Standard gear pumps cannot replace hypoid gear oil pumps. Hypoid gears have high sliding friction and need oils with strong lubrication film. Using the wrong oil will cause rapid wear.
Hypoid oils are typically yellow-green to dark red, while standard oils are dark black—do not mix them.
(3) Avoid Misunderstanding High Viscosity
High-viscosity oil does not always mean better lubrication. Excessive viscosity increases fuel consumption and negatively affects lubrication, especially for high-speed vehicles.
(4) Do Not Confuse SAE Grades
SAE classifications for engine and gear oils differ. Do not substitute engine oil for gear oil, or vice versa—doing so can result in severe engine damage.
(5) Rational Use Extends Gear Lifespan
Gear oil typically has a long service life. If not yet expired, reclaimed oil can be reused but must be stored cleanly to prevent contamination.
(6) Appropriate Oil Levels
Avoid overfilling, which increases resistance and risks brake failure if oil leaks into the brake drum. Underfilling causes overheating and wear. Oil should be level with the filler port and checked regularly.
(7) Timely Oil Changes
Follow manufacturer guidelines (typically every 30,000–48,000 km). Drain oil while hot and clean gear components before adding new oil. Keep water and impurities out.