20L Vertical Kneading Machine – Complete Specifications, Applications, and Selection Guide
The vertical kneading machine is a high‑performance mixing device designed for processing medium‑ to high‑viscosity materials in industries such as chemicals, electronics, pharmaceuticals, cosmetics, new energy, and food. Also referred to as a double planetary vertical mixer, this equipment combines self‑rotation and revolution movements to achieve thorough, homogeneous mixing with no dead zones.
Our vertical kneader series is available in a wide range of capacities, from 2‑litre lab units to 2000‑litre industrial systems, all constructed with SUS304 or SUS316L stainless steel for durability and contamination‑free operation. With optional vacuum, heating/cooling jackets, the vertical mixing machine adapts to complex process requirements, including LSR silicone rubber compounding, battery slurry preparation, and pharmaceutical gel production.
How a Vertical Kneading Machine Works
The unique performance of a vertical kneading machine comes from its dual‑motion mixing principle:
Self‑rotation – each mixing blade rotates on its own axis, generating strong shearing and kneading forces.
Revolution – the entire blade assembly revolves around the central axis of the mixing chamber, ensuring full coverage and eliminating stagnant zones.
This planetary action continuously compresses, folds, stretches, and cuts the material, achieving uniform dispersion of fillers, pigments, or active ingredients. The vertical barrel design promotes natural material flow and facilitates temperature control through the jacketed wall, making this vertical kneader ideal for heat‑sensitive or high‑purity formulations.
Key Features of the Vertical Kneading Machine
| Feature | Benefit |
|---|---|
| Planetary mixing action | No dead corners, bubble‑free dispersion, consistent batch‑to‑batch quality |
| Dual‑drive system | Low‑speed kneading can run together or separately |
| Vacuum capability | Removes entrapped air, improves product density and appearance |
| Jacketed mixing chamber | Precise temperature control via electric, steam, or water circulation |
| Hydraulic lifting | Easy loading/unloading, quick cleaning, and reduced downtime |
| Modular design | Scalable from lab to production; options for explosion‑proof and CIP systems |
Technical Specifications – Vertical Kneader Series
The table below lists standard models of our vertical kneading machine range. Custom capacities and configurations are available upon request.
| Model | Design Volume (L) | Working Volume (L) | Tank Size (mm) | Kneading Power (kW) | Revolution (rpm) | Self‑rotation (rpm) | Disperser Power (kW) | Disperser Speed (rpm) | Lifting | Dimensions (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| SXJ‑2 | 3 | 2 | 180×120 | 0.75 | 0‑51 | 0‑112 | 0.75 | 0‑2980 | Electric | 800×580×1200 |
| SXJ‑5 | 7.4 | 5 | 250×150 | 1.1 | 0‑51 | 0‑112 | 1.1 | 0‑2980 | Electric | 1200×700×1800 |
| SXJ‑10 | 14 | 10 | 300×200 | 1.5 | 0‑48 | 0‑100 | 1.5 | 0‑2980 | Electric | 1300×800×1800 |
| SXJ‑15 | 24 | 15 | 350×210 | 2.2 | 0‑43 | 0‑99 | 2.2 | 0‑2980 | Electric | 1500×800×1900 |
| SXJ‑30 | 43 | 30 | 400×350 | 3 | 0‑42 | 0‑97 | 3 | 0‑2980 | Electric | 1620×900×1910 |
| SXJ‑50 | 68 | 48 | 500×350 | 4 | 0‑39 | 0‑85 | 4 | 0‑2100 | Hydraulic | — |
| SXJ‑60 | 90 | 60 | 550×380 | 5.5 | 0‑37 | 0‑75 | 5.5 | 0‑2100 | Hydraulic | 1800×1100×2450 |
| SXJ‑100 | 149 | 100 | 650×450 | 7.5 | 0‑37 | 0‑75 | 11 | 0‑2100 | Hydraulic | 2200×1300×2500 |
| SXJ‑200 | 268 | 200 | 750×600 | 15 | 0‑30 | 0‑61 | 22 | 0‑1450 | Hydraulic | 2400×1600×2800 |
| SXJ‑300 | 376 | 300 | 850×650 | 22 | 0‑28 | 0‑56 | 30 | 0‑1450 | Hydraulic | 3300×1300×3400 |
| SXJ‑500 | 650 | 500 | 1000×830 | 37 | 0‑24 | 0‑48 | 45 | 0‑1450 | Hydraulic | 3700×1500×3500 |
| SXJ‑1000 | 1327 | 1000 | 1300×1000 | 45 | 0‑20 | 0‑36 | 55 | 0‑1450 | Hydraulic | 4200×1800×3780 |
| SXJ‑2000 | 2300 | 2000 | 1500×1300 | 75 | 0‑13 | 0‑35 | 90 | 0‑1450 | Hydraulic | 4500×2010×4000 |
Note: Specifications are subject to change; confirm with factory drawing for precise dimensions.
Model Selection Guide – Choosing the Right Vertical Kneading Machine
Selecting the appropriate vertical kneading machine depends on your batch size, material viscosity, and process requirements. Use the following guide:
| Model | Recommended Application |
|---|---|
| SXJ‑2 / SXJ‑5 | Laboratory R&D, formula optimization, small‑sample testing |
| SXJ‑10 / SXJ‑15 | Pilot‑scale production, trial batches for new products |
| SXJ‑30 / SXJ‑50 / SXJ‑60 | Standard industrial batches (e.g., sealants, adhesives) |
| SXJ‑100 / SXJ‑200 | Medium‑volume production of battery slurries, gels, and coatings |
| SXJ‑300 / SXJ‑500 | Large‑scale manufacturing of silicone rubbers and pharmaceutical pastes |
| SXJ‑1000 / SXJ‑2000 | High‑throughput continuous production for food and chemical industries |
For a given model, we recommend a filling factor of 60‑70% of the working volume. Our technical team can assist with viscosity and power calculations to ensure the vertical kneader meets your throughput and quality targets.
Construction Details of the Vertical Kneader
| Component | Description |
|---|---|
| Mixing Chamber | Cylindrical/tapered design, manufactured from SUS304/316L; polished to medical‑grade finish if required |
| Planetary Blades | “S”‑shaped or Z‑type blades that rotate both on their own axes and around the chamber centre |
| High‑Speed Disperser | Independently driven disc, speeds up to 2980 rpm, for rapid dispersion of powders and additives |
| Drive Motor | Mounted on top, coupled with a heavy‑duty gearbox for reliable torque transmission |
| Heating/Cooling Jacket | Double wall for circulating thermal oil, steam, or chilled water; optional electric heaters |
| Hydraulic Lift | Enables smooth raising and lowering of the mixing vessel for discharge and cleaning |
| Vacuum System | External pump connection (optional) for de‑aeration and bubble removal |
| PLC Control | Touch‑screen interface with recipe storage, real‑time monitoring of speed, temperature, vacuum, and time |
Application Areas
Thanks to its versatility, the vertical kneading machine is employed across numerous industries. The table below lists typical materials processed with this vertical mixer.
| Industry | Typical Materials |
|---|---|
| New Energy | Lithium‑ion battery anode/cathode slurries, fuel cell catalyst pastes |
| Electronics | Solder pastes, ceramic slurries, magnetic inks, thermal adhesives, potting compounds |
| Chemicals | Silicone sealants, polysulfide adhesives, structural glazing compounds, synthetic resins, rubber compounds, printing inks, abrasives |
| Pharmaceuticals | Ointments, transdermal gel patches, dental impression materials, API‑loaded silicone gels |
| Cosmetics | Creams, lipsticks, lotions, facial masks, mascara, toothpaste, soap bases |
| Food | Sauces, jams, chocolate fillings, chewing gum bases, seasoning pastes |
For medical‑grade applications (e.g., LSR silicone rubber containing active pharmaceutical ingredients), this vertical kneading machine can be supplied with enhanced surface finish, closed‑system operation, and full GMP compliance.
Optional Upgrades for Your Vertical Kneading Machine
To tailor the vertical kneader to your specific process, we offer the following add‑ons:
Vacuum de‑aeration unit with variable pumping speed
Electric, steam, or thermal‑oil heating systems
Water or air cooling circuits
Explosion‑proof motor and control panel (ATEX/IECEx)
In‑line temperature sensor with data logging
Automatic weighing and feeding systems
CIP (clean‑in‑place) spray nozzles and recirculation pump
Custom blade designs for ultra‑high viscosity or shear‑sensitive materials
Installation and Maintenance Tips
Installation
Place the vertical kneading machine on a level floor; models above 200 L require a concrete foundation.
Connect all utilities (power, water, steam, compressed air, vacuum) according to the site layout.
Perform a no‑load test to check rotation direction and seal integrity before first production run.
Routine Maintenance
Clean the mixing chamber and blades immediately after each batch to prevent cross‑contamination.
Check gearbox oil level weekly; replace lubricant every 500 operating hours.
Inspect hydraulic hoses and cylinder seals annually.
Monitor vacuum pump oil and filter condition monthly.
Keep a maintenance log for traceability and predictive servicing.
Why Choose Our Vertical Kneading Machines
Years of industry experience – We understand the nuanced needs of silicone, battery, and pharmaceutical mixing.
Global market presence – Our equipment complies with international quality standards and has been exported to many countries.
In‑house R&D and QC – Every vertical kneader is designed and tested by our skilled engineering team.
Superior performance – Durable construction, low maintenance, and consistent output give you a competitive edge.
All technical data are for reference only. Final specifications are subject to the official quotation and nameplate. For a customised solution or free material testing, please contact our technical sales department.
