Industrial Large Capacity Magnetic Stirrer Agitator for Reactor Bottom Mixing 1-450 RPM
Industrial bottom-mounted magnetic stirrer for large reactor vessels. Seal-less design, 1-450 RPM speed range, 316L stainless steel wetted parts. Ideal for chemical, pharmaceutical, and food processing applications requiring clean, reliable mixing without shaft seals.
- Capacity: 50 liters to 30,000 liters
- Mixer power: 1.5 kW to 55 kW
- Material: [SUS304 / SUS316L]
- Voltage: 110V / 220V / 380V / 400V / 440V / 480V / 600V
- Heating method: [Electric / Steam / Thermal Oil / Hot Water / No Heating]
- Cooling method: [Cooling Jacket / Dimple Jacket / Coil / No Cooling]
- Agitation system: [Top Entry Agitator / Anchor Mixer / Paddle / Turbine / High-Shear Mixer / Customized]
- Optional features: [Insulation / Load Cells / Temperature Sensor / Pressure Gauge / Manhole / CIP / PLC Control / Explosion-Proof Motor]
- Certificates: ASME, CE, GMP, UL, ATEX, ISO 9001
- Working pressure: [Atmospheric / Positive Pressure / Vacuum / Specify pressure]
- If you have drawings, we can process them for you.
Note: Please contact our sales team before placing an order. Website prices are for reference only; specific pricing requires understanding your requirements to provide a quote.
Email:info@ace-chn.com
Tel: +86 186 2683 5909
WeChat: ace-chn
WhatsApp: +86 186 2683 5909
$3,644.98 – $4,642.61Price range: $3,644.98 through $4,642.61
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Recommend RPM: 0-960RPM
Viscosity: Low/medium viscosity
Application: Mainly Liquid mixing

Recommend RPM: 0-200RPM
Viscosity: Low/medium viscosity
Application: Mainly Liquid mixing

Recommend RPM: 30RPM
Viscosity: Medium/High viscosity
Application: Melting, High viscosity product mixing, For single wall tank

Recommend RPM: 30RPM
Viscosity: Medium/High viscosity
Application: Melting, High viscosity product mixing, For jacket tank

Recommend RPM: 1480/2850 RPM
Viscosity: Low/medium viscosity
Application: Liquid powder mixing and dispersion

Recommend RPM: 2800 - 3200 RPM
Viscosity: Low/medium/High viscosity
Application: Liquid powder mixing and homogenizing

Recommend RPM: 0-355RPM
Viscosity: Low/medium viscosity
Application: Install at bottom, No mechanical seal working condition

Recommend RPM: As above
Viscosity: Low/medium viscosity
Application: Liquid powder mixing and dispersion For tank volume >300L
Magnetic Stirring for Large Reactor Vessels
Bottom-mounted magnetic stirrers solve a problem that top-entry agitators often create: shaft sealing, maintenance access, and headroom. With no protruding shaft through the reactor top, you gain more usable vessel space and remove a common leak point. This unit is designed for reactors where clean, reliable mixing matters across a wide speed range—from gentle product blending at 1 RPM to aggressive dispersion at 450 RPM.
We build these stirrers around the actual process, not the other way around. The magnetic coupling transmits torque without a mechanical seal, which means no wear items in the seal area and no product contamination risk from seal lubricants. For processes involving solvents, acids, or sterile media, that\’s a meaningful advantage. The drive motor sits below the vessel, so the top remains free for manways, sensors, and charging ports.
Construction and Materials
The wetted parts are machined from 316L stainless steel as standard. If your process requires higher corrosion resistance, we can switch to duplex or super duplex grades. Internal surfaces are electropolished to Ra ≤ 0.4 µm, with orbital welding on all process connections. The magnetic rotor is fully encapsulated—no exposed magnets, no crevices where product can accumulate. That matters for CIP/SIP cycles and for processes where trace contamination is unacceptable.
How to Specify the Right Unit
Before requesting a quote, work through these points:
- Product chemistry and concentration—especially chloride levels, which affect pitting resistance
- Batch volume and working volume, not just total tank capacity
- Operating temperature and design temperature
- Pressure: atmospheric, pressurized, or vacuum
- Viscosity and solids content at the highest expected concentration
- Required mixing intensity—emulsification, suspension, or simple homogenization
- Cleaning validation requirements and seal compliance standards
These details determine the torque rating, motor size, impeller geometry, and whether you need a cooling jacket on the drive housing. Send us your process data and we\’ll recommend a configuration that fits your production reality.
Technical Specifications
| Speed Range | 1 – 450 RPM |
| Drive Type | Bottom-mounted magnetic coupling |
| Wetted Materials | 316L SS (duplex available) |
| Surface Finish | Ra ≤ 0.4 µm electropolished |
| Sealing | Seal-less magnetic drive |
| Mounting | Reactor bottom flange |
Request a Configuration
Tell us your material, batch size, operating temperature, pressure, and mixing requirements. We\’ll respond with a technical proposal and pricing for a stirrer matched to your process.
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