Grinding & Milling
Pin Type Bead Mill: Horizontal pin-type bead mill for nanometer-range grinding, supporting media down to 0.2mm with centrifugal separation and force cooling. Capacity range 0.5 - 1,000 L. Typical applications: Automotive Coatings, Industrial Coatings, Printing Inks, Pigment Pastes, Agrochemicals.
Horizontal pin-type bead mill for nanometer-range grinding, supporting media down to 0.2mm with centrifugal separation and force cooling.
The PZB Pin Type Bead Mill is a horizontal wet grinding mill with a pin-type rotor and centrifugal separation system. It supports grinding media down to 0.2 mm, which enables fineness into the nanometer range. The large discharge area supports high flow rates for both continuous and recirculation production. The grinding cylinder, rotor, shaft and discharge end face are force-cooled to keep material temperature under control. Wetted parts are available in alloy steel, ceramic or polyurethane.
Response within 24 hours · Engineering consultation · Application review available
Built for fine and nano-scale wet grinding across high-value industries. The pin-type rotor's energy density reaches sub-micron fineness that disc mills cannot achieve.
For automotive coatings, the PZB grinds OEM and refinish paints to 3–8 μm with the energy density of a pin-type rotor. Consistent particle distribution ensures smooth film appearance and high gloss for basecoats and clearcoats.
Widely used for printing inks — offset, gravure and flexographic — the PZB reaches 3–8 μm to deliver strong color development, high strength and clean print definition.
For battery materials, the PZB processes cathode and anode slurries to 1–5 μm, with ceramic-lined or hardened-alloy chambers controlling metal contamination for lithium battery production.
As a pharmaceutical nanosuspension mill, the PZB grinds to 100 nm–5 μm for enhanced bioavailability of poorly soluble APIs, with force cooling protecting heat-sensitive actives.
For advanced ceramics, the PZB grinds ceramic slurries to 0.5–5 μm, delivering the uniform sub-micron particles required for electronics-grade and technical ceramics.
For electronics, the PZB disperses carbon black and CNT conductive materials to ≤1 μm, achieving the stable conductive dispersions needed for battery electrodes and conductive coatings.
| Industry | Target Fineness |
|---|---|
| Automotive Coatings | 3–8 μm |
| Printing Inks | 3–8 μm |
| Battery Materials | 1–5 μm |
| Ceramics | 0.5–5 μm |
| Pharmaceuticals | 100 nm–5 μm |
| Electronics | ≤1 μm |
Nano (<1 μm) → pin-type with 0.1–0.3 mm media · 1–5 μm → 0.3–0.8 mm media · >5 μm → larger media, single pass
0.5–5 L → lab / R&D · 10–50 L → pilot · 100–200 L → production
The large discharge area and centrifugal separation make the pin-type mill ideal for continuous and recirculation production at high flow rates.
Need help sizing a pin-type bead mill for your process?
Request a QuotationChoose this bead mill when your target process falls within the following ranges. The final bead size and model are confirmed after reviewing your material and target fineness.
| Target fineness | 50 nm – 5 µm |
|---|---|
| Throughput | 50 kg/h – 10 t/h |
| Maximum viscosity | 15,000 cps |
| Recommended zirconia bead size | 0.3 – 0.8 mm |
| Wetted parts options | Alloy steel, ceramic or polyurethane |
INDUSTRIES THIS MACHINE SERVES
Cathode/anode slurry grinding for lithium battery production, with metal contamination control.
Learn more →SC suspension concentrate and water-based pesticide formulation grinding.
Learn more →TYPICAL PERFORMANCE REFERENCE
| Material Type | Target Particle Size | Recommended Bead Size | Viscosity Range |
|---|---|---|---|
| Battery materials | < 1 μm | 0.1-0.4 mm | Low to Medium |
| Pharmaceutical nanosuspension | 0.1-1 μm | 0.1-0.3 mm | Low |
| Advanced ceramics | 0.5-5 μm | 0.3-0.6 mm | Medium |
| Printing inks | 3-8 μm | 0.4-0.8 mm | Low to Medium |
Typical reference values only. Actual results depend on formulation, bead material, and process conditions. Material testing is recommended before final selection.
BASKET MILL VS HORIZONTAL BEAD MILL
| Dimension | Pin Type Bead Mill | Disc Type Bead Mill |
|---|---|---|
| Process mode | Continuous / recirculation, fine & nano grinding | Continuous / recirculation, standard grinding |
| Fineness range | Sub-micron to 5 μm (nano capable) | 5 - 20 μm |
| Media size | 0.1 - 0.8 mm | 0.8 - 2.4 mm |
| Energy density | High (pin rotor) | Medium (disc rotor) |
| Best for | Battery materials, nanosuspensions, ceramics, conductive pastes | Coatings, inks, pigment pastes |
| Equipment cost | Higher | Lower |
Read the full comparison guide: How To Select Grinding Bead Size For Ultrafine Milling
Process Engineering
A feed pump moves premixed slurry through the grinding chamber filled with zirconia media.
Rotating pins accelerate the media and create repeated impact and shear that break agglomerates and reduce particles.
The centrifugal separator retains the grinding media while processed slurry exits for single-pass or recirculation operation.
Cooling at the chamber, rotor, shaft, and discharge area removes process heat and stabilizes product temperature.
Equipment Benefits
High energy density supports fine and nano-scale wet grinding.
Large discharge area supports continuous and recirculating production.
Self-circulating cartridge mechanical seal simplifies maintenance.
Multi-zone cooling improves process-temperature control.
Technical Data
| Model | Working Volume (L) | Power (kW) | Recirculation Tank (L) | Cooling Water (L/h) |
|---|---|---|---|---|
| PZB6 | 6 | 15 | 300 | 1000 |
| PZB10 | 10 | 18.5 | 500 | 1500 |
| PZB20 | 20 | 30 | 1000 | 2000 |
| PZB30 | 30 | 37/45 | 2000 | 2000 |
| PZB60 | 60 | 75 | 3000 | 2500 |
| PZB150 | 150 | 160/200 | 5000 | 4000 |
PRODUCT INQUIRY
Tell us your material and capacity, our engineer will reply within 24 hours.
Equipment Guidance
A pin type bead mill is a horizontal wet grinding mill whose rotor is fitted with pins (rods) inside a media-filled chamber. The pin geometry generates high shear and energy density, grinding pigment and slurry to sub-micron and nano-scale fineness with media as small as 0.1 mm.
Depending on media size and number of passes, a pin type bead mill reaches sub-micron to about 15 μm. With 0.1-0.3 mm zirconia media it grinds into the nano range, which is why it is chosen for battery materials, nanosuspensions and advanced ceramics.
A pin type bead mill is finer. Its pin rotor delivers higher energy density than a disc rotor, reaching sub-micron and nano fineness with media down to 0.1 mm. A disc type mill typically works in the 5-20 μm range with larger media and is more economical for standard coatings and inks.
A pin type bead mill runs zirconia media as small as 0.1-0.2 mm. The centrifugal separation system and large discharge area keep fine media inside the chamber, which is what enables nano-scale grinding.
Pin type bead mills suit high-value, fine and nano-scale dispersions: battery cathode/anode slurries, pharmaceutical nanosuspensions, advanced ceramics, conductive pastes (carbon black, CNT), pigment concentrates and printing inks.
Choose a pin type mill when you need fineness below about 5 μm, especially sub-micron or nano targets, or when you use media smaller than 0.8 mm. Choose a disc type mill for standard 5-20 μm coating and ink grinding, where it offers a lower purchase cost and simpler maintenance.
POLYC pin type bead mills are available with working volumes from 6 L to 150 L (lab to production), with matching recirculation tanks from 300 L to 5,000 L and motor power from 15 kW to 200 kW.
The grinding cylinder, rotor, shaft and discharge end face are force-cooled, with a temperature interlock. This keeps heat-sensitive formulations such as APIs and battery slurries within a controlled temperature window during continuous grinding.
Pricing depends on chamber capacity, grinding media, contact materials and explosion-proof options rather than a single list price. Share your batch volume, material and target fineness, and POLYC will return a quotation with the recommended model.
Industry Applications
OEM and refinish paint grinding to 3-8 µm
protective coating dispersion to ≤5 µm at high energy density
offset, gravure and flexo ink grinding to 3-8 µm
high-concentration pigment dispersion to ≤5 µm
suspension concentrate milling to D90 ≤5 µm
cathode and anode slurry processing to 1-5 µm
advanced ceramic slurry grinding to 0.5-5 µm
nanosuspension production to 100 nm-5 µm
pigment and sunscreen dispersion to ≤5 µm
carbon black and CNT conductive dispersion to ≤1 µm
WHY POLYC MACHINE
Every machine is designed by our in-house R&D team, built in our own factory, and supported by the same team that has delivered over 8,000 systems worldwide.
Manufactured under an ISO 9001 quality management system. All machines comply with CE directives, with EC Declaration of Conformity for every order.
Since 2001, POLYC has engineered wet grinding, dispersing and mixing systems for global manufacturers.
Every machine carries a 3-year warranty with ongoing spare-parts supply and technical support after delivery.
Standard models ship within 30 days of order confirmation. Custom-engineered lines are scheduled against your project timeline.
Free installation guidance and operator training are included with every machine, covering commissioning and safe start-up.
From lab-scale 0.5L to 12,000L production systems. Material testing, configuration and process design included.
Engineering consultation within 24 hours. Application review, technical specs and quotation delivered fast.
Export-ready packaging with full documentation. DDP/FOB/CIF terms available for 80+ countries.
Genuine spare parts, remote diagnostics and lifetime technical support for every machine we build.
Technical Consultation
Tell us about your material and process. Our engineering team will recommend the right configuration.
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