Micro Gear And Magnetic Drive Pumps
SKQB Micro Pump
Magnetic drive micro gear pump for precise low flow duty.
View specifications →Micro Gear And Magnetic Drive Pumps
Magnetic Pump
The build of the micro gear family specified when a leak is the thing you cannot allow, not the thing you plan to maintain.
Overview
What This Pump Does
This magnetic drive pump uses the same principle as the rest of the SKQB family: an outer magnet on the motor turns an inner magnet on the gear set through a closed containment housing. Nothing rotates through the casing wall, so there is no leak path.
It is chosen where the liquid is hazardous, volatile or expensive, and where a conventional sealed pump would need repeated attention. Typical work is closed circuit circulation, metered additive feed and point of use transfer.
| Applications include | ingredient dispense, point-of-use dispense, lubrication, sampling, additives, and sample preparation |
|---|
Key Benefits
What Removing The Seal Actually Buys
No Leak Path
With no shaft through the housing there is nothing for vapour or liquid to escape past.
No Seal Maintenance
The most frequent maintenance item on a small pump disappears, which matters where access is difficult.
Torque Limited By Design
Under overload the magnets decouple rather than stalling the drive, which protects the motor.
Repeatable Metering
Fixed displacement per revolution keeps the delivered volume tied to speed.
Application Scenarios
Where It Is Installed
Solvent And Reagent Handling
Liquids where vapour escape is a safety or product quality problem.
Unattended Circulation
Loops that run continuously with nobody watching the pump.
Hazardous Liquid Transfer
Moving liquid to a point of use without altering it and without a gland to watch.
Who It Is For
- Chemical laboratories and pilot plants
- OEMs building equipment that must not leak
- Process engineers with volatile liquids
- Plants tired of replacing small pump seals
Problems It Solves
Vapour escape from a gland
There is no gland. The containment housing is a static barrier, not a running seal.
Frequent small pump failures
Removing the wear item that fails most often extends the interval between interventions.
Overload damages the drive
Magnetic coupling slips instead of transmitting a stall, which protects the motor and the gear set.
Technical Features
How It Is Built
- Magnetically coupled drive with no shaft seal
- External gear set inside a closed containment housing
- Flow proportional to shaft speed
- Torque limited coupling under overload
- Compact motor and head assembly
- Suited to circulation, metering and transfer duty
Specifications
Technical Data
Selection is made on flow, pressure and liquid compatibility. Send all three rather than a model number from an old order.
| Applications include | ingredient dispense, point-of-use dispense, lubrication, sampling, additives, and sample preparation |
|---|
| Model | Max Speed | Flowrate | Pressure | Frequency | Port size | |
|---|---|---|---|---|---|---|
| r/min | L/min | MPa | HZ | inch | ||
| SKQB8 | 2900rpm / 3300rpm | 3 L | 0.2 | 50Hz /60Hz | 1/8” | |
| SKQB10 | 5 L | 0.25 | 1/8” | |||
| SKQB15 | 15 L | 0.3 | 3/8” | |||
| SKQB20 | 20 L | 0.4 | 3/8” |
Materials And Process
What Goes Into Every Unit
Materials
- Stainless steel wetted head
- PEEK gears available for sensitive liquids
- Elastomers selected for the liquid
Manufacturing And Assembly
- Gear and magnet assembly matched at build
- Containment housing leak checked
- Run test before packing
- Documentation with the order
Quality Control
- Containment housing integrity verified
- Flow checked before dispatch
- Test record available with the order
Customization Options
- Gear material to suit the liquid
- Fixed or variable speed drive
- Mounting and port orientation
- Supply voltage and frequency
Compared With Other Options
| Sealed gear pump | A sealed pump costs less initially but adds a seal to maintain and a path for leakage. |
|---|---|
| Peristaltic pump | A tube pump tolerates dry running and aggressive chemicals but pulses and wears tubes. This pump runs smoother for longer on clean liquid. |
Use Guide
Operating A Seal Free Pump
Keep The Liquid Clean
Particles wear the internals and can decouple the magnets. Filter the suction.
Protect Against Dry Running
No liquid means no lubrication. Use level protection where the supply can empty.
Watch For Decoupling
If output stops while the motor runs, the magnets have slipped. Stop, find the cause and restart.
Record The Duty
Log speed against delivered flow once installed so drift is visible later.
Answers
Magnetic Pump FAQ
How does the pump avoid a seal?
Torque crosses a closed containment housing magnetically, so no shaft passes through the casing.
What happens under overload?
The magnets decouple. The pump stops delivering while the motor keeps turning, so remove the cause before restarting.
Can it handle abrasive liquid?
No. Abrasives wear the internals. Use a progressing cavity or lobe pump for solids.
What liquids suit it?
Clean liquids including solvents, reagents, lubricants and process liquids. Send the specific liquid for confirmation.
Is it the same family as the SKQB?
Yes, it is a build of the same magnetic drive micro gear pump range.
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Related Equipment From The Same Line
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View specifications →Need Magnetic Pump Sized For Your Duty Point
Tell us the liquid you cannot afford to leak, the flow and the pressure, and we will confirm the build.