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Gear pumps are essential for transferring viscous fluids reliably in various industrial applications. Selecting the appropriate gear pump ensures optimal system performance, longevity, and safety. Understanding key specifications will help you make an informed decision for your specific needs.
4 YEAR WARRANTY: Backed by SEAFLO's industry leading 4 Year Warranty providing long term reliability for routine oil changes diesel transfer and industrial service tasks ensuring dependable performance and extended operational value
BUILT FOR HIGH VISCOSITY LIQUIDS: Designed for transferring oil diesel and lubricants efficiently with strong suction power delivering consistent flow rates for machinery service marine engine applications and high viscosity fluid movement
DURABLE METAL PUMP HEAD AND GEARS: Engineered with a rugged metal pump head and copper gears offering superior wear resistance during demanding operation ensuring longevity and dependable output for regular oil changes and service tasks
REVERSIBLE FLOW OPERATION: Pump head design enables fluid movement in either direction improving versatility for filling draining and scavenge processes for diesel lubricants machinery maintenance and industrial oil transfer work
SELF PRIMING PERFORMANCE: Self priming technology provides fast reliable priming reducing downtime during oil changes or service operations allowing smooth startup even with thicker fluids or varying hose positions across different applications
SEALED AND THERMALLY PROTECTED MOTOR: Motor housing is sealed against contaminants and features built in thermal protection preventing overheating extending motor life and meeting the demands of oil change diesel fuel and lubrication systems
One Pump for All: This 12V self-priming gear pump transfers motor oil, gear oil, transmission fluid, waste oil, lubricants, diesel fuel, and kerosene for cars, motorcycles, lawn mowers, and marine engines. Designed to pump from tanks or drain pans — not...
Specifications: 12V DC, 78W standard power, 120W max load, 3.2 GPM flow. 0.3 MPa / 43.5 PSI Max Pressure. Work cycle up to 120 minutes.
Efficient Oil Extractor: This marine oil pump features all-copper construction — motor, impeller, and pump head — providing lower power consumption and stronger output. Handles thick oils (80W-90) without any problem.
Thermal Protection: The electric oil transfer pump features built-in thermal protection to prevent overheating, ensuring safe and continuous operation.
Clean Way to Change Oil: Easily extract oil through the service or fill port without crawling into tight engine bays, fighting hard-to-reach drain bolts, or making a mess in the bilge or equipment compartment.
[ BUILT FOR HIGH VISCOSITY LIQUIDS ]: Designed for transferring oil diesel and lubricants efficiently with strong suction power delivering consistent flow rates ideal for machinery service marine engine applications and high viscosity fluid movement
[ DURABLE METAL PUMP HEAD AND GEARS ]: Engineered with a rugged metal pump head and copper gears offering superior wear resistance during demanding operation ensuring longevity and dependable output for regular oil changes and service tasks
[ REVERSIBLE FLOW OPERATION ]: Pump head design enables fluid movement in either direction improving versatility for filling draining and scavenge processes making it ideal for diesel lubricants machinery maintenance and industrial oil transfer work
[ 4 YEAR WARRANTY ]: Backed by SEAFLO’s industry leading 4 Year Warranty providing long term reliability for routine oil changes diesel transfer and industrial service tasks ensuring dependable performance and extended operational value
Low Starting Current: The gear pump starts with very low current and can start running quickly, saving time, high efficiency, stable and reliable operation; low power consumption, energy saving and environmental protection.
Self-priming function: DC gear pump with self-priming function, automatically open when you open the faucet, automatically stop when you close the faucet. Commonly used in circulating water supply, intelligent toilet, mechanical equipment and so on.
High-quality materials: The gear water pump adopts copper core to ensure the quality of the pump, which is characterized by high head and low noise. The pump casing is made of high quality plastic, durable.
Specifications: Gear water pump Rated voltage is DC12V，Load rated current is 0.6A, No load rated current: <0.65A, No load shedding: 1.6L/min ±10%, Pressure: 2.0 kg ±10%, 1 kg load spit water: 1.32L/min±10%, Suction: <1.0M, Noise is 50db Max.
Good Service: If you have any questions about our products, please feel free to contact us, we will reply you within 24 hours and give you a satisfactory answer, we are committed to providing the best service and the best quality products.
SINGLE-PERSON DITCH-FREE OIL CHANGE - Eliminate strenuous manual maintenance for trucks, excavators and heavy machinery. No need to crawl under equipment or rely on service pits. This portable 24V electric oil pump allows one single operator to extract...
3.2 GPM HIGH-FLOW SELF-PRIMING GEAR PUMP FOR VISCOUS OIL - Upgraded 100W motor and enlarged gear pump head deliver stable 3.2 GPM flow with strong suction. Efficiently transfer thick high-viscosity fluids including engine oil, gear oil and transmission...
EXCELLENT HEAT DISSIPATION for LONG TIME USE - Expanded ventilated pump housing maximizes heat dissipation to prevent motor burnout under long-hour running. Designed for frequent commercial use: waste oil recovery, bulk oil filling and lubricant transfer...
FULL ACCESSORIES FOR MULTIPLE WORKING SCENARIOS - Kit includes 10ft cuttable steel wire reinforced hose, battery alligator clamps, 1/2" & 3/4" brass hose barbs and sealing fittings. Ideal for 55-gallon drum oil transfer, waste oil recovery...
VERSATILE FOR HEAVY EQUIPMENT MAINTENANCE - Built for heavy equipment: semi-trucks, excavators, tractors, construction machinery and boats. Widely adopted by auto repair garages, farm operators and mobile lubrication service crews. Premium sturdy...
NOTE - Not suitable for GASOLINE, diesel or other flammable fuels.
Durable Construction：The main body is made of cast iron, featuring high-strength wear resistance, suitable for extracting various lubricating oils such as engine oil, transmission oil, and hydraulic oil.
Efficient Performance：With an output flow rate of 3.5L/min at 1800 rpm, the pump achieves a vertical suction lift of 3 meters, meeting regular oil replacement and transmission requirements.
Flexible Adaptability：The output shaft supports dual-specification sleeves (8mm and 12mm), which are included with the product. A 2-meter-long silicone hose with a 12mm inner diameter is standard-equipped, offering oil resistance and anti-aging...
Simple Operation: Just need simple installation after arrival, and it can be started by matching with an electric wrench or drill, ready to use immediately.
The product includes a cycloid pump, two Baota connectors, a 2-meter silicone hose, a 1/2-inch 12mm socket, an 8mm coupling, two hose clamps and a 12mm hexagon external adapte
Lower Unit Gear Oil Pump for Standard Quart Bottles for 28mm bottle caps, 10CC Per Pump Stroke.
Gear oil change kit includes 4 adapter sizes, 8mm and 10mm (Metal), 3/8"(Swivel, Metal).Take the guess work out of figuring out the size of your Lower Unit's gear oil drain plug. (Won't Fit Volvo Penta)
Suitable Quart Bottle Pump that comes with Long (6.125 inch) and Short (4.75 inch)suction tubes for Tall and Short Quart Bottles.
19.5 inch long hose used to pump fluid to narrow and inconvenient areas.
The liquid transfer pump is suitable for the maintenance of automobiles, trucks, RVs, ships, motorcycles, and other daily applications.
🚤 PUMPS 8CC PER PUMP STROKE (Includes Metal 3/8" Adapter Connected To Clear Plastic Tubing)
🚤 THIS GEAR OIL CHANGE KIT includes 3 adapter sizes. 3/8"(Swivel, Metal), 8mm and 10mm (Metal). Take the guess work out of figuring out the size of your Lower Unit's gear oil drain plug. (WON'T FIT VOLVO PENTA)
🚤 2 Rigid Suction Tubes REACHES TO BOTTOM OF TALL AND SHORT GEAR OIL BOTTLES
🚤Easy To Follow Instructions On Back Of Header Card
Adopting SP series gears, the fluctuation is small, the pressure is high, the noise is low, and the product performance is stable
DU composite bearing and high-performance sealing components, low starting torque, good sealing performance, can work efficiently under severe conditions
The axial and radial clearance automatic compensation mechanism enables the oil pump to maintain high volumetric efficiency and high mechanical efficiency for a long time
Simple installation and long service life, providing 21MPA pressure. Hydraulic gear pump is widely used in automobile machinery, hardware machinery, light industry machinery, textile machinery,environmental protection,injection molding,and other...
Last update on 2026-08-31 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Gear Pumps
Choosing the Right Gear Pump
Selecting the ideal gear pump involves considering several critical factors to ensure efficient and reliable operation. Focus on these key areas before making a purchase:
Flow Rate and Pressure: Determine the required flow rate (gallons per minute or liters per minute) and the maximum operating pressure (PSI or bar) for your application. Gear pumps are typically categorized by their displacement per revolution, which directly impacts flow rate at a given speed. Ensure the pump can meet or exceed your system's demands without being oversized, which can lead to inefficiency.
Fluid Compatibility and Viscosity: The materials of construction for the pump housing, gears, and seals must be compatible with the fluid being pumped to prevent corrosion or degradation. Consider the fluid's viscosity range; gear pumps excel with high-viscosity fluids but may require specific designs or operating speeds for very low-viscosity liquids. Check the manufacturer's specifications for recommended fluid types and viscosity limits.
Operating Environment and Power Source: Evaluate the environmental conditions where the pump will operate, such as temperature, presence of dust, or corrosive elements. This will influence the required enclosure rating (e.g., IP rating) and material choices. Also, consider the available power source (electric motor, hydraulic motor, etc.) and ensure the pump's shaft and mounting are compatible.
Frequently Asked Questions
What is the difference between external and internal gear pumps?
External gear pumps use two meshing gears rotating in opposite directions, with fluid trapped between the gear teeth and the casing. Internal gear pumps have one gear rotating inside another, with a crescent-shaped divider separating the two. Both are positive displacement pumps suitable for viscous fluids.
How do I determine the correct pump size?
Pump sizing depends on your required flow rate and operating pressure. You'll need to know the viscosity of the fluid you're pumping and the desired speed of operation. Consult pump performance curves provided by manufacturers to match your application's needs.
What maintenance do gear pumps typically require?
Regular maintenance usually involves checking for leaks, monitoring bearing and seal wear, and ensuring proper lubrication if required. Periodic inspection of gear teeth for wear or damage is also recommended. Following the manufacturer's maintenance schedule is crucial for longevity.
Can gear pumps handle abrasive fluids?
Standard gear pumps are not ideal for highly abrasive fluids as the close tolerances between gears can lead to rapid wear. For abrasive applications, specialized gear pumps with hardened materials or alternative pump types like peristaltic or diaphragm pumps may be more suitable.
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