PTM Triple Roller Mill
PTM Triple-roller mill is mainly used in paint, printing ink, pigment, plastic, etc., especially mill and disperse products with high viscosity and small granularity. Due to the mutual squeezing of three horizontal alloy bowls and friction with different velocities, a great milling effect can be realized. The Triple-roller mill adopts sprocket driven, the gear is immersed into a lubricant, so the service life of the machine is maximum prolonged, noise and energy consumption is reduced. The Triple-roller mill's bowl adopts wear -resistant alloy steel, has a longer life.
PTM Series Precision Triple Roller Mill (Three Roll Grinding & Calendering Mill)
Product Overview & Operating Principle
The PTM series Triple Roller Mill (Three Roll Mill) is an ultra-fine wet grinding and high-shear dispersion machine engineered for processing high-viscosity pastes, thixotropic slurries, and paste-like formulations. Comprising three precision-ground horizontal rollers mounted on a heavy cast-iron rigid frame, the machine generates immense hydraulic shearing and crushing forces across narrow roller gaps to break down agglomerates to sub-micron particle sizes.
Differential Speed Dynamics & Particle Reduction Mechanism
The three rollers rotate in opposite directions at progressive speed ratios (Slow Rear Roller → Medium Center Roller → Fast Front Roller). Material fed into the intake nip between the slow and middle rollers is subjected to powerful compression and crushing. As the paste transfers to the narrow gap between the middle and fast rollers, the intense differential surface velocity creates extreme laminar shear, de-agglomerating pigments and solid fillers evenly. A flexible scraper knife at the discharge end transfers the finished, homogenized paste directly into collection vessels.
Key Technical Highlights
- Integrated Internal Roller Cooling System: Chilled cooling water continuously circulates through the hollow interior of each roller, keeping the processing temperature rise strictly under 10°C to prevent heat degradation of thermal-sensitive cosmetics, inks, and electronic pastes.
- Advanced Roller Metallurgy & Ceramics: Standard chilled alloy cast iron rollers (hardness HS 70–75) or optional ceramic rollers (high-purity Zirconia $\mathrm{ZrO_2}$, Alumina $\mathrm{Al_2O_3}$, or Silicon Carbide) for 100% metal-free, contamination-free grinding.
- Micron-Level Gap Adjustment: Precision handwheel micrometer dial mechanisms with spring safety cushions allow operators to fine-tune the roller gap distance accurately to achieve target particle fineness.
- Heavy Rigid Cast Frame: Shock-absorbent, high-rigidity machine bed eliminates vibration and mechanical deflection during intensive continuous high-viscosity production.
- Explosion-Proof & Sanitary Compliance: Available with ATEX / IECEx compliant explosion-proof drive motors and full stainless steel sanitary exterior shrouds for food, cosmetic, and pharmaceutical cleanroom standards.
PTM Technical Parameters
| Model | Roller Diameter (mm) | Working Length (mm) | Slow Roll Speed (rpm) | Mid Roll Speed (rpm) | Fast Roll Speed (rpm) | Motor Power (kW) | Dimensions L×W×H (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| PTM150 | 150 | 300 | 26 | 78 | 205 | 2.2 | 980 × 750 × 915 | 500 |
| PTM260 | 260 | 675 | 24 | 68.5 | 195 | 7.5 | 1750 × 1400 × 1180 | 2000 |
| PTM406 | 406 | 810 | 16 | 48 | 145 | 15.0 | 2100 × 1900 × 1360 | 5300 |
| PTM406L | 406 | 1000 | 16 | 48 | 145 | 22.0 | 2350 × 1778 × 1320 | 5800 |
*Note: Specifications above represent standard production models. Motor voltages (220V/380V/440V, 50Hz/60Hz), hydraulic roller pressure systems, variable frequency speed drives (VFD), ceramic rollers (Zirconia/Alumina), and explosion-proof electrical certifications are custom-engineered on request.
Our Manufacturing Advantages
REAL MANUFACTURER
Direct fabrication in our 9,000 m² production facility in Wuxi, Jiangsu. In-house roller centrifugal casting, precision grinding, and dynamic balancing without broker markups.
24 HOUR ONLINE SUPPORT
Direct consultation with POLYC grinding engineers for roller material selection, cooling water flow calculations, and paste viscosity matching.
100% CUSTOMIZABLE
Custom motor voltages (220V/380V/440V, 50Hz/60Hz), zirconia/alumina ceramic rollers, hydraulic pressure gap adjustment, and Ex-proof electrical configurations.
30-45 DAYS FAST DELIVERY
Standardized cast iron machine beds and stocked roller blanks ensure rapid 30 to 45-day factory turnaround for export shipments.
STRICT QUALITY CONTROL
ISO9001 and CE certified manufacturing. Every triple roller mill undergoes roller camber precision measurement, hydrostatic cooling tests, and 4-hour full-speed run-ins prior to dispatch.
3 YEARS WARRANTY
Protected by our standard 3-Year Global Warranty covering main machine casting frames, gear transmission systems, and electric motors.
Target Application Spectrum
High-Grade Coatings
Lipsticks & Cosmetic Bases
Organic Dyes & Pigment Pastes
Offset & Screen Printing Inks
Leather Finishing Pastes
OEM Paints & Colorants
Specialty Packaging Inks
PVC Plastisols & Pastes
Project Field Cases
[Client industry & country — to confirm with sales]
[Client industry & country — to confirm with sales]
[Client industry & country — to confirm with sales]
[Client industry & country — to confirm with sales]
Ready to Discuss Your Triple Roller Mill Requirements?
Tell us your paste formulation, target fineness (microns), required roller metallurgy, and production throughput — our Wuxi engineering team will recommend the right PTM model and deliver a factory quote within 24 hours.