Core Technology & Working Principle
In a concentric design both shafts share one central axis. The fast inner shaft builds a localised high-shear vortex around the Cowles disc, while the slow outer anchor sweeps the whole batch past that vortex and scrapes the wall clean. Because the two motions are driven independently, shear intensity and bulk turnover can be tuned separately — the key to processing thixotropic pastes that would either stall a single shaft or over-shear in a high-speed-only mixer.
▲ Coaxial Dual-Shaft Synergy
An inner high-speed Cowles disc (0–1,500 rpm) and an outer low-speed anchor frame (25–50 rpm) run on independent coaxial drives, so shear intensity and full-batch turnover are set separately instead of being locked to one shaft speed.
▲ PTFE Scraping on a Mirror-Polished Vessel
The vessel wall is CNC-lathed and mirror-polished to keep tight contact with the PTFE scraper blades, so no paste is left adhering to the wall. Continuous wall renewal also improves heat transfer during heating or cooling cycles.
▲ Thixotropic Paste Handling
Rated for formulations up to 100,000 cps. Heavy paste is pushed back into the central high-shear zone instead of stagnating at the wall, keeping the batch uniform from the first minute of compounding.
Precision Engineered Details
The components below are what plant teams interact with every shift — built to survive heavy paste duty, solvent cleaning and years of continuous cycling.
PCM Technical Parameters
The table below summarises the standard PCM production line-up. Motor voltages, vessel clamping fixtures, vacuum covers and explosion-proof electrical systems are engineered on request.
| Model | Outer Anchor Motor (kW) | Anchor Speed (rpm) | Inner Dispersing Motor (kW) | Dispersing Speed (rpm) | Working Capacity (L) |
|---|---|---|---|---|---|
| PCM-150 | 4.0 | 50 | 11.0 | 0 – 1,500 | 150 |
| PCM-300 | 5.5 | 40 | 15.0 | 0 – 1,500 | 300 |
| PCM-500 | 7.5 | 25 | 22.0 | 0 – 1,500 | 500 |
| PCM-1000 | 11.0 | 25 | 37.0 | 0 – 1,500 | 1,000 |
| PCM-1500 | 15.0 | 25 | 55.0 | 0 – 1,450 | 1,500 |
*Parameters represent standard configurations. Motor voltages (220V/380V/440V, 50Hz/60Hz), vessel clamping fixtures, vacuum covers and explosion-proof electrical systems are engineered on request. Processing limit up to 100,000 cps. Reference projects in your industry are available on request.
Our Manufacturing Advantages
🏢 Direct Source Factory
Shanghai Polyc Technology Co., Ltd. is not a reseller. We forge the heavy-duty frames and precision-machine the coaxial shafts from raw material at our 9,000 m² Wuxi plant, so you buy at factory price and speak directly to the engineers who built your machine.
✈️ 30–45 Days Fast Delivery
Standard PCM models ship within 30 to 45 days from technical drawing confirmation, backed by integrated vertical in-house production lines.
🛡️ Strict Quality Control
Concentric coaxial machining, hydraulic column lathing and shaft dynamic balancing are all performed and inspected in-house, and every mixer is test-run at the factory before packing.
🔧 3-Year Global Warranty
Every PCM concentric double shaft mixer is covered for three years on structural frames, hydraulic lift columns and drive gearboxes, with rapid DHL spare parts dispatch worldwide.
Target Application Spectrum
Concentric double shaft mixers shine wherever a high-solid or thixotropic paste defeats a single-shaft mixer — from putty and texture compounding to sealant and adhesive production:
High Viscosity Water-Based Coatings
Wall Putty Pastes & Fillers
Polymer Sealants & Adhesives
Textured Coatings & Stone Paints
Ready to Discuss Your Concentric Double Shaft Mixer Requirements?
Tell us your formulation viscosity, target batch volume (L) and process requirements — our Wuxi engineering team will size the anchor-to-disc ratio, scraper profile and motor power, then quote directly from the factory within 24 hours.
Technical FAQ
Short answers to the questions plant managers ask before specifying a concentric double shaft mixer.