Gerteis Dry Granulation Roller Compactors
Worldwide supply of Swiss-engineered Gerteis roller compactors including Mini-Pactor, Macro-Pactor, and Polygran series, press rolls, granulator rotors, and factory spare parts by SpareX.
MINI-PACTOR Compactor
The MINI-PACTOR roller compactor is built for R&D formulation trials and pilot batches from 10 g up to 100 kg/h. An active floating gap from 1 to 6 mm ensures uniform ribbon density. The 250 mm rolls guarantee seamless scale-up. Replacement granulator screens and seals are supplied.
- Up to 100 kg/h
- Trials from 10 g
- Force to 20 kN/cm
- 250 mm rolls
MACRO-PACTOR Compactor
The flagship MACRO-PACTOR delivers continuous dry granulation with throughput rates up to 400 kg/h. Its 100 mm wide compaction rolls operate with controlled force between 1 and 20 kN/cm. The system integrates online PAT sensors and WIP cleaning. Spare feed screws and bearings are available.
- Up to 400 kg/h
- Roll width 100 mm
- PAT integration
- WIP/CIP cleaning
ULTRA-PACTOR Compactor
The ULTRA-PACTOR roller compactor processes potent pharmaceutical compounds under OEB 4 and OEB 5 containment. An integrated isolator prevents airborne dust exposure and protects personnel. Automated WIP sequences eliminate cross-contamination. Barrier seals and HEPA filters are supplied.
- OEB 4 / OEB 5 safety
- Integrated isolator
- Airborne containment
- WIP wash cycles
POLYGRAN Compactor
The POLYGRAN production series delivers robust dry compaction with capacities up to 300 kg/h. The machine combines Swiss roller pressing technology with simplified maintenance access. Its design maintains consistent granule size without overheating. Drives and shaft seals are available.
- Up to 300 kg/h
- Simple maintenance
- Thermal stability
- Robust drive unit
MINI-POLYGRAN Compactor
The MINI-POLYGRAN compact compactor serves laboratories and pilot plants processing up to 50 kg/h. The unit allows fast changeovers and tool-free strip-down for cleaning between batches. A rigid frame minimizes vibration during pressing. Replacement screens and roll covers are supplied.
- Up to 50 kg/h
- Tool-free strip-down
- Rigid machine frame
- Quick changeover
Gerteis Compaction Rolls
Heavy-duty 250 mm compaction rolls are machined from high-grade AISI 316L stainless steel. Smooth, knurled, and pocket surface profiles handle free-flowing and cohesive powders. The rolls restore exact operational gap clearance. Matched bearing sets and seals are supplied.
- 250 mm roll diameter
- AISI 316L steel
- Knurled and smooth
- Thrust bearings
Granulator Rotors & Screens
Oscillating mill rotors deliver gentle ribbon milling to achieve tight particle size distributions. Both open star rotors and pocket configurations are available for different breaking forces. Calibrated Conidur screens ensure precision granule yield. Guide bars and inserts are supplied.
- Star-shaped rotors
- Conidur screen foil
- Pocket rotor types
- Precise grain sizing
Feed Screws & Containment Seals
Gerteis feed systems incorporate horizontal metering augers and vertical tamp screws driven by independent servos. The dosing assembly de-aerates bulk powder to uniformly feed the compaction gap. This minimizes feed surging when processing aerated powders. Drive couplings and seals are supplied.
- Twin screw dosing
- Independent servos
- Powder de-aeration
- PTFE shaft seals
Swiss Dry Granulation Engineering and Global Track Record
Since 1986 GERTEIS Maschinen + Processengineering AG has developed and designed premium dry granulation systems tailored to demanding pharmaceutical, chemical, and food applications.
Based in Jona, Switzerland, the company specializes in precision roller compactors that deliver repeatable compaction without moisture or thermal drying.
The practical performance of Gerteis equipment is proven by leading global pharmaceutical manufacturers.
US-based Metrics Contract Services (Greenville, North Carolina) purchased its initial Gerteis Mini-Pactor in 2014 for R&D and clinical supply, and subsequently installed a second Mini-Pactor in 2018 at its oral solid dosage commercial production facility.
Engineering Principles of Pactor and Polygran Series
Gerteis roller compactors feature a patented floating gap design that dynamically regulates roller clearance to maintain constant compaction force and uniform ribbon density.
The harmonized 250 mm roll geometry across both laboratory and commercial models guarantees seamless linear scale-up from early formulation to full-scale commercial manufacturing.
The modular design integrates automated WIP/CIP cleaning and robust containment up to OEB 4 and OEB 5 for high-potency active pharmaceutical ingredients (HPAPI). Online PAT instrumentation enables real-time ribbon density monitoring in compliance with Quality by Design (QbD) standards.
Worldwide Equipment and Factory Spare Parts Supply by SpareX
SpareX provides international procurement and direct delivery of Gerteis roller compactors, assemblies, and replacement parts.
The supply portfolio includes precision compaction rolls (smooth, knurled, and pocket surfaces), feed augers, oscillating mill rotors, calibrated Conidur screens, and containment sealing rings.
Supplied spare parts and wear components are verified against official manufacturer equipment nameplates and serial numbers, guaranteeing exact dimensional fit and long-term operating reliability for production facilities worldwide.
GERTEIS Maschinen + Processengineering AG / Gerteis and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of GERTEIS Maschinen + Processengineering AG / Gerteis and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
