
Powerful, Synchronized Mixing for High-Performance Formulations
The Contra Rotary Mixer is a specialized dual-agitation system featuring contra-rotating blades — typically an outer anchor agitator and an inner Pitch Blade Turbine (PBT) — combined with a bottom-entry high-shear homogenizer. This configuration delivers maximum mixing efficiency for high-viscosity, multi-phase, and shear-sensitive formulations.
Designed for critical blending, emulsification, and heat transfer processes, this mixer is widely used in pharmaceutical, cosmetic, personal care, and specialty food applications.
- Anchor Agitator (Outer): Rotates slowly and continuously scrapes the vessel walls, improving heat transfer and maintaining bulk flow.
- Pitch Blade Turbine (Inner): Rotates in the opposite direction, creating strong axial and radial flow for superior mixing dynamics.
- Bottom-Entry Homogenizer: Provides micron-level particle size reduction and stable emulsification under vacuum or atmospheric pressure.
This combination allows simultaneous low-speed scraping, high-volume flow, and intense shear, making it perfect for products that are viscous, layered, or sensitive to shear.
Parameter | Specification Range |
Vessel Capacity | 100 L to 10,000 L |
Anchor Motor Power | 1 HP to 60 HP |
Anchor Speed | 5 – 60 RPM (Variable) |
PBT Motor Power | 1.5 HP to 40 HP |
PBT Speed | 50 – 90 RPM (Variable with VFD) |
Bottom Homogenizer Power | 3 HP to 40 HP |
Homogenizer Speed | Up to 3000 RPM |
Mounting | Top Entry (Anchor & PBT) + Bottom Entry (Homogenizer) |
Material of Construction | SS316L (Contact), SS304 (Non-contact), GMP grade finish |
Seal Type | Mechanical Seal |
Flow Design | Contra-rotating axial & radial with bottom shear |
Drive Type | Gear / Belt / VFD-controlled Motors |
Optional Features | Vacuum system, CIP/SIP, Load cells, Flameproof motor, Lid lifting |
Surface Finish | Mirror Polish (Ra < 0.4 µm), Matte Polish (Ra < 0.8 µm)GMP-compliant |
Control Panel | Touchscreen HMI with SCADA/PLC integration |
Heating/Cooling Jacket | Available (Steam/Thermic/Chilled Water) |
- Dual mixing zones: wall-scraping + axial-radial pumping
- Integrated high-shear homogenization for emulsions/suspensions
- Easy to clean with CIP/SIP; vacuum compatible
- Excellent for layering, phase control & viscosity transitions
- GMP-compliant, scalable for pilot and production batches
- Cosmetic creams, gels, conditioners, lotions
- Ointments, emulsions, suspensions
- Nutraceutical syrups and semi-solids
- Sauces, mayonnaise, and processed foods
- Chemical emulsions, lubricants, adhesives