Daily Maintenance of Pump Equipment: Regularly Check These 5 Parts to Extend Service Life by 5 Years
Industrial pumps, as core power equipment in mining, metallurgy, chemical and other fields, follow the golden rule “30% depends on selection, 70% depends on maintenance” for extending their service life. Often, sudden equipment failures are not due to quality issues but rather neglecting the inspection of key parts during daily maintenance.
Today, we have compiled the 5 core parts for the daily maintenance of pump equipment. Performing regular checks on these can easily extend your equipment’s lifespan!
1: Seals: The “First Line of Defense” Against Leaks
Seals (mechanical seals/packing seals, auxiliary impeller seals, oil seals, etc.) are key components for preventing media leakage from the pump body and are also among the most prone to wear.
Inspection Points
(1) Observe the sealing area for any dripping, seepage, or leakage. Even minor seepage should be taken seriously.
(2) Check the seal surface for cracks, deformation, aging, hardening, etc.
(3) Maintenance Suggestions: Regularly clean impurities from the sealing surfaces; replace seals with compatible ones based on the medium’s characteristics. Ensure sufficient cooling/lubricating fluid in the seal chamber during operation to prevent dry running damage.
Maintenance Suggestions
Regularly clean impurities from the sealing surfaces; replace seals with compatible ones based on the medium’s characteristics. Ensure sufficient cooling/lubricating fluid in the seal chamber during operation to prevent dry running damage.
2: Bearings: The “Heart Joint” of Equipment Operation
Bearings are responsible for supporting the pump shaft rotation. Once problems occur, they can directly cause pump vibration, increased noise, or even shutdown.
Inspection Points
(1) Touch the bearing housing shell by hand to feel if the temperature is abnormally high.
(2) Listen to the sound during operation for any “rustling” abnormal noises or irregular sounds.
(3) Check if the bearing grease is sufficient, clean, and free from emulsification, darkening, or deterioration.
Maintenance Suggestions
Add or replace grease regularly according to the equipment manual, and avoid mixing different types of grease; if the bearing is found to be severely worn, replace it with the same specification original parts in time.
3: Impeller: The “Power Core” for Conveying Media
The impeller is in direct contact with the medium. Especially for slurry pumps and mud pumps, the impeller is prone to erosion, corrosion, wear, cavitation, cracks, etc., due to solid particles.
Inspection Points
(1) After shutdown, open the pump cover to check the impeller surface for wear pits, blade deformation, corrosion, or missing parts.
(2) Check if the connection between the impeller and the shaft is loose, and for any eccentricity or wobble.
(3) Clean impurities and scale adhering to the impeller surface to avoid blockage affecting flow rate.
Maintenance Suggestions:
Select an impeller with suitable material, design, and shape based on the conveyed medium; perform regular dynamic and static balance testing to prevent pump vibration caused by impeller imbalance.
4: Bolts / Fasteners: The “Safety Lock” Against Loosening
Bolts, nuts, and other fasteners may seem insignificant, but they are crucial for ensuring tight connections between various pump components. Once loose, they can cause serious failures like pump seal failure or component misalignment.
Inspection Points:
(1) Check bolts at locations like pump body flanges, bearing seats, and motor connection seats one by one for looseness, corrosion, or stripped threads.
(2) Pay special attention to pump inlet/outlet flange bolts and coupling fastening bolts, as these areas are most prone to loosening due to vibration.
Maintenance Suggestions:
Regularly tighten bolts with a torque wrench to standard torque values; apply anti-rust agent to exposed bolts to avoid seizing due to corrosion; when replacing bolts, choose high-strength original factory parts to eliminate using inferior substitutes.
5: Coupling (or Belt Pulley): The “Bridge” Connecting the Motor and Pump Shaft
The coupling is responsible for transmitting motor power to the pump shaft. Its elastic cushion (buffer pad) is prone to aging and damage due to long-term vibration.
Inspection Points:
(1) Check the coupling elastic cushion for cracking, deformation, or detachment.
(2) Check if the coaxiality between the two ends of the coupling has excessive deviation, and for any eccentric rotation.
Maintenance Suggestions
Regularly replace aged elastic cushions to ensure smooth transmission; strictly calibrate coaxiality during installation to reduce vibration damage to the equipment.
For pumps connected by belt pulleys, inspect the belts for cracks, aging, edge wear, hardening or glossiness on the back side, as well as the belt tension and the alignment of the pulleys.
The long-term stable operation of equipment is inseparable from meticulous daily maintenance. Regular inspection of the above 5 core parts may seem simple, but it can fundamentally reduce 80% of pump equipment failures.
Shijiazhuang Boda Industrial Pump Co., Ltd. is always committed to providing customers with high-quality pump equipment + professional operation and maintenance guidance. If you encounter any problems during equipment maintenance, please feel free to contact us!
Post time: Jan-28-2026