Capacity:
Total Volume: 25 Liters/Effective Working Volume: 17.5 Liters
Power & Drive:
Main Motor Power: 4.0 kW - 4 Poles (High-torque design).
Motor Brand: Siemens Innomatics (Ensures reliability and global serviceability).
Mixing Mechanism:
Blade Type: Sigma Blades (Delivers intense shear and folding action).
Blade Speed (Variable): Controlled via Frequency Inverter (VFD).
Fast Speed: 0-60 rpm
Slow Speed: 0-50 rpm
Material Contact Integrity:
Material Grade: SS304 Stainless Steel for all contact parts.
Finish: Mirror Polished (Minimizes material adhesion and cross-contamination).
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NH-25
Electric Heating Vacuum Kneader
The material contact part can be SS304, SS316 with mirror polished or carbon steel. The rest part can also be stainless steel and mostly adopt carbon steel with automotive grade industrial paint
Sigma blades speed can be adjustable with inverter control; one is fast and another is slow.
Discharge method can hydraulic tilting discharging or screw extrusion discharging or both of them.
Independent Control Panel: Function control,Schneider electronic components,Circuit breaker protection,Voltage & current showed and etc.
Vacuum function( optional): it includes vacuum pump, metal hose, buffer tank and vacuum gauge. Vacuum degree can reach-0.096mpa
Heating function ( optional): Electric heating with far ultrared heaters or with jacket for heating transfer oil; Jacket for steam; Jacket for water circulation.
Cooling function( optional): Jacket for cooling water circulation or equipped together with a chiller.
Other customized function can be discussed.
Sigma Kneader Mixer : Precision Mixing for Elastomers
This custom-bilt 25-Liter Tilting Sigma Kneader Mixer is specifically designed for the demanding processing of high-viscosity materials like Silicone Rubber, sealants, and high-performance elastomers. It is an ideal piece of equipment for R&D, pilot batches, and specialty compound formulation, offering high shear force and superior temperature control essential for controlling polymerization.
sigma blades with mirror polished
upper cover
handwheel
| Type | NH- 5 | NH-10 | NH-100 | NH-300 | NH-500 | NH-1000 | NH-1500 | NH-2000 | NH-3000 | NH-4000 | NH-5000 | |
| Volume (L) | 5 | 10 | 100 | 300 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | |
| Rotation Speed (rpm) | 33 23 | 33 23 | 35 22 | 37 21 | 37 21 | 35 25 | 30 16 | 30 16 | 38 27 | 38 27 | 38 27 | |
| Main Motor Power (Kw) | 0.75 | 1.1 | 3-7.5 | 11-30 | 15-37 | 22-90 | 22-90 | 30-110 | 30-110 | 45-110 | 55-132 | |
| Heating Methods | Steam Pressure (MPa) | 0.3 | ||||||||||
| Electric Power (Kw) | 1 | 1 | 4 | 9 | 16.2 | 27 | 32.4 | 40 | 72 | 72 | 96 | |
| Vacuum (MPa) | -0.094 (Vacuum Kneader) | |||||||||||
| Pressure (MPa) | 0.45 (Pressure Kneader) | 0.35 (Pressure Kneader) | 0.3 (Pressure Kneader) | |||||||||
| Weight (Kg) | 300 | 400 | 1250 | 1600 | 3000 | 4500 | 5800 | 6500 | 11000 | 13000 | 21000 | |
1. What materials can be processed?
High-viscosity compounds such as epoxy resin, rubber, silicone, sealants, adhesives, and ceramic pastes.
2. Are customs available?
Yes. Blade type, motor power, vacuum system, heating jacket, and discharge method can be tailored per application.
3. What is the capacity range?
Standard models from 2L to 1000L+. Larger sizes available on request.
4. What heating options are supported?
Electric, thermal oil, or steam heating.
5. Can it operate under vacuum?
Yes. Vacuum system available for degassing and improved dispersion quality.
6. How is product discharged?
Manual or hydraulic tilting, or bottom discharge valve—based on material flowability and process setup.
7. Do you offer installation and support?
Yes. Remote or on-site installation guidance, with 12-month warranty and lifelong service support.
Karvil has a professional technical team dedicated to the research, design, and manufacturing of Sigma mixers and ribbon blenders. Our equipment has already been sold to over 50 countries and various industries worldwide.