Stokes Model 550

Quality Workmanship you can Trust

The Stokes Model 550 presses are a line of 12-ton single-sided rotary presses designed for compacting a wide range of shapes required by the pharmaceutical, powder-metal and ceramic industries.

Designed for Quality Products

Simplified adjustments, through conveniently positioned handwheel controls, allow adjustments of weight and thickness during operation in order to optimize compact quality. The press closed grid feeders feature a series of pins mounted at the bottom of the frame, which encounter materials as they feed through causing a cascading effect that drives materials into the die cavities. Adjustable gate controls at the rear of the frames permit a consistent material flow rate through the feed stations.

Transit-level feed supports facilitate front-to-back and side-to-side positioning of the feed frame. Two piece precision-machined rotary heads provide accurate tool alignment and guidance that extend tool life. A lower punch leveling system compensates for tool wear and allows use of reworked lower punches. Feed hoppers, fabricated from stainless steel and arranged with vertical adjustments and lock systems, provide control of material flow to the feed frames. The pneumatic pressure / tonnage indicator system permits easy and accurate adjustment of pressure while easily determining tonnage applied. This system includes an automatic motor shut down if the pre-set load is exceeded.

Simplified Servicing / Cleaning

Press components are removable for easy service and cleaning. The sectionalized camming, head spindle, steel worm and headgear are easily removed should replacement be necessary. The die table has a highly polished surface finish for cleaner operation and less material loss. A closed tunnel feed frame suppresses dust and extends the time interval between cleaning. Dust nozzles positioned above and below die tables at compression stations remove dust resulting in a cleaner operation.

Operation Safeguards / Conveniences

A multiple disc-type clutch is a low-effort manually actuated feature, which reduces high torque loading of drive components. Mechanical / electrical interlocks reduce the possibility of accidental startups. Guards surround the rotary head, work areas, belts and handwheels. The guards are locked into position to prevent removal without tools.

Options for Increased Versatility

  • Shadow-fill systems minimize excessive punch stroking and reduce recirculated granulation. This feature contributes to uniformity between compact weight and clean operation.
  • Abrasive resistance hardened die table surface, removable upper and lower punch bushings.
  • A core-rod system provides the capability to produce compacts with blind holes and / or through-holes.
  • Keywayed punch sockets provide necessary alignments for irregularly shaped tooling.
  • Adjustable upper rolls allow compacts to be formed at various levels in the die and extend tool life. This feature is vital for the production of flanged-type compacts.
  • Punch restrainers prevent excessive vertical movement of the lower punches. Benefits include extended tool life, uniform compact weight and minimization of double logo impressions.
  • Electronics can include industry standard explosion proof motors and controls.

Technical specifications

Model Number550-1550-2550-3
Max. Operating Speed (compacts/min.)600640600
Tooling Stations151615
Max. Compact Diameter (in.)1-3/161-5/161-3/16
Fill Depth - Range (in.)1/8 - 1 1/161/8 - 1 1/161/8 - 1 1/16
Max. Oper. Pressure (tons)121212
Adjustable Range (tons)0-120-120-12
Upper Punch Entrance, Standard (in.)1/41/41/4
Upper Punch Entrance, Optional (in.)1/8 - 3/81/8 - 3/81/8 - 3/8


The CCS CS-2500 Level 5 Control System elevates tablet press operations to new heights. Designed for compatibility with various models, including those from Stokes, Fette, Korsch, and Hata, it offers a comprehensive solution for managing tablet presses. This advanced system not only includes standard press controls but also excels in generating detailed, customizable reports, covering production data, parameter changes, and alarms. Equipped with a development license of XLReporter, users can tailor reports to specific needs, ensuring precise tracking and analysis of production processes. Its use of off-the-shelf components and Allen Bradley technology makes it user-friendly and easy to maintain, while also complying with 21 CFR Part 11 standards for data collection and E-Signature.

The CCS CS-2000 Level 4 Control System is a versatile solution for managing Stokes tablet presses and other OEM models. It features standard programming that unlocks all functions of the presses, enhancing operational efficiency. The system is built with off-the-shelf Allen Bradley components, making it cost-effective and easy to maintain. With Allen Bradley ControlLogix PLCs and FactoryTalk View HMI interface, it offers complete control and precision. The system is compliant with 21 CFR Part 11, ensuring reliable data collection and electronic signatures. Its design prioritizes non-proprietary components for high reliability and easy part replacement, supported by advanced features like Advantech Industrial PC, Netbiter Remote VPN, and precision servo motors.

The CCS CS-500 Level 3 Control System is a robust solution for managing Stokes tablet presses and is adaptable to other brands. It simplifies operations with its Basic CS-500 programming, allowing users to monitor and control essential functions effectively. This system is not only user-friendly but also cost-effective, incorporating Allen Bradley components to reduce the total ownership cost. Its design features the latest technology, including Allen Bradley ControlLogix PLCs and a FactoryTalk View HMI interface, ensuring comprehensive control over the tablet press while maintaining ease of maintenance and part replacement.

The CCS CS-400 Level 2 Control System brings a new level of efficiency and ease to encapsulation equipment operations. It's tailored for Index Encapsulation Equipment but adaptable to machines from any vendor. With its Standard CS-400 programming, users gain comprehensive control over basic functions. The system's use of Allen Bradley components, including ControlLogix PLCs and Power Flex 525 Motor Drives, ensures reduced costs and maintenance ease. It also includes a FactoryTalk PanelView HMI interface for seamless operation, presenting a reliable, cost-effective solution for encapsulation machine management.

For any query or information on our products