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Tablet Press

Experience high-speed, precision tablet manufacturing with our advanced compression technology. Designed for versatility, our machines handle everything from small-scale R&D batches to continuous mass production, ensuring exceptional uniformity in tablet weight, thickness, and hardness to meet the stringent quality demands of the modern pharmaceutical industry.

 

Product Overview

 

The Industrial Rotary Tablet Press is a continuous-production compaction platform engineered for pharmaceutical solid oral dosage (OSD) manufacturing and industrial powder processing. Built on a heavy-duty cast-iron base with a segmented 316L stainless steel turret, the machine processes challenging formulations—including abrasive active pharmaceutical ingredients (APIs), botanical extracts, and fine direct-compression blends—while maintaining tight weight and hardness distributions. It integrates directly into automated solid dosage lines, bridging high-speed throughput with strict regulatory compliance.

 

 
 

Optimized with advanced pressure compensation technology and precision-engineered feeding mechanisms, our presses ensure exceptional granule flow and tableting consistency. The modular design allows for quick-change tooling and easy sanitation, while a robust drive system provides the consistent torque necessary for reliable, heavy-duty performance during long-term industrial operations.

 

Working Principle

Tablet formation relies on synchronized volumetric dosing, dual-stage mechanical compression, and positive ejection across a multi-station rotary cycle:

Gravitational or Forced Feeding:

Granular or powder feedstocks flow from the stainless steel hopper into paddle-wheel feeder housings, which consistently fill die bores on the rotating turret.

01

Volumetric Dosing:

Lower punches retract to a calibrated depth, ensuring precise volumetric powder measurement per die cavity. Excess powder is sheared off by the leveling blade.

02

Pre-Compression:

Upper and lower punches pass through pre-compression rollers, applying an initial low-tonnage force (up to 20 kN) to expel entrapped air from the powder matrix.

03

Main Compression:

Immediately following pre-compression, main compression rollers apply the final mechanical load (up to 100 kN), fusing particles into a structurally sound compact.

04

Ejection:

Upper punches retract fully, and lower punches rise to push the finished tablet flush with the die table surface, where a takeoff blade guides it into the discharge chute.

05

 

ZP9 Tablet Press

 

Key Features

Isolated Drive & Compression Zones: The mechanical transmission and lubrication train are completely segregated from the product contact zone, eliminating lubricant migration risks.


Frequency-Controlled Paddle Feeders: Independent dual-paddle agitators prevent segregation of multi-component blends and force cohesive or low-flowability powders into high-speed dies.


Quick-Change Turret Mechanism: A modular turret assembly supported by a swing-arm extraction crane reduces complete tooling and turret changeover times to under 90 minutes.


Hydraulic Overload Protection: Real-time hydraulic relief circuits instantly dump pressure and halt the drive motor if compression forces exceed safe operating limits.


Vibration-Damped Monolithic Base: High-mass structural casting absorbs dynamic compaction harmonics, limiting operational noise emission to under 75 dB(A) at maximum turret speeds.

 

 
 
Configuration & Components

Turret & Material Grades:

Three-piece segmented turrets manufactured from forged AISI 316L stainless steel, paired with tool steel punch guides hardened to 58-62 HRC. Tooling conforms strictly to TSM or EU standards.

Drive Train:

Helical ground gearing driven by an IE3 high-efficiency AC motor coupled with a vector-control frequency inverter.

Lubrication Circuit:

Centralized micro-lubrication system delivering metered lubricant to punch shafts and upper/lower cam tracks, monitored by low-level sensors and fluid recovery sumps.

Control Architecture:

Industrial PLC paired with an industrial touch-screen HMI, providing real-time trend graphs for compression force, weight rejection sorting, and audit-trail logging.

 

Technical Specifications

 

Parameter

Model RTP-45 (Medium Production)

Model RTP-61 (High-Speed Production)

Max. Tablet Output

250,000 tablets/hr

420,000 tablets/hr

Number of Stations

45 stations

61 stations

Tooling Standard

D / B / BB

B / BBS

Max. Main Compression Force

80 kN

100 kN

Max. Pre-Compression Force

20 kN

25 kN

Max. Tablet Diameter (Round)

16 mm

13 mm

Max. Filling Depth

18 mm

15 mm

Turret Speed

20 - 90 RPM

25 - 110 RPM

Main Motor Power

7.5 kW

11 kW

Net Weight

Approx. 2,800 kg

Approx. 3,500 kg

 

Applications

Pharmaceuticals:

Immediate-release, sustained-release, and multi-layer prescription or OTC oral solid dosage tablets.

Nutraceuticals:

High-dose vitamin premixes, dietary supplements, herbal extracts, and effervescent health formulations.

Chemical & Industrial:

Industrial catalyst pellets, water purification tablets, detergent blocks, and ceramic green compacts.

Veterinary:

High-weight veterinary boluses and medicated animal feed supplements.

 

Medicine Tablet Making Machine

 

Model Selection / Configuration Options

Tooling Format: Choose B tooling for standard tablets up to 16 mm diameter; select D tooling for larger diameters or deeper fill depths. Multi-tip tooling options are available for high-output small tablets.


Containment Levels: Standard open architecture or high-containment configurations (OEB 3 / OEB 4) featuring through-the-wall isolation and Wash-In-Place (WIP) spray nozzles for potent or toxic compounds.


Layer Capabilities: Single-layer standard configuration or factory-upgraded dual/triple-layer conversion kits for combination drug delivery and visual product differentiation.

 

 
Manufacturing & Quality Control
 
01/

Surface Finish & Traceability: All product-contact surfaces utilize certified AISI 316L stainless steel mechanically polished and electropolished to a surface roughness of Ra <= 0.4 um. Material test certificates (3.1b) are provided for all batch lots.

02/

Machining Tolerances: Turret pocket bore concentricity and guide keyways are machined on 5-axis CNC centers to tolerances within +/- 0.005 mm, preventing eccentric punch entry and premature edge wear.

03/

Factory Acceptance Testing (FAT): Every press undergoes a 72-hour continuous dry-run endurance test followed by compression validation runs utilizing placebo reference granules.

04/

Regulatory Compliance: Designed and constructed in accordance with current Good Manufacturing Practice (cGMP), CE machinery directives, and EN ISO 12100 safety standards. Complete IQ/OQ documentation packages are supplied with delivery.

 

Customization & Integration

 

 

Solid Dosage Line Integration:

Interfaces via closed pneumatic transfer channels with upstream high-shear mixers, fluid-bed dryers, and conical mills, as well as downstream automated metal detectors and dedusters.

 

100% Weight Sorting Systems:

Integrates with real-time dynamic checkweighers and pneumatic rejection gates to automatically isolate out-of-tolerance tablets based on individual thickness and force feedback.

 

SCADA Connectivity:

Supports standard industrial communication protocols (OPC UA / Ethernet/IP) for plant-wide data acquisition and remote diagnostics.

 

 

 

FAQ

 

 

Q: How does the machine prevent powder sticking and capping during high-speed operation?

A: Tooling metallurgy and compression profile design resolve sticking and capping. We offer punch faces treated with hard-chrome plating, nitriding, or specialized anti-stick coatings (such as titanium nitride). Furthermore, the adjustable pre-compression dwell time allows entrapped air to escape from the powder bed before main compaction, neutralizing lamination forces.

Q: What documentation package is included for cGMP validation?

A: Each machine ships with a comprehensive turnover package containing 3.1 material certificates, surface roughness calibration reports, electrical schematics, component list sheets, and pre-formatted IQ/OQ (Installation and Operational Qualification) protocols to support site validation audits.

Q: What is the actual duration required for a complete turret changeover?

A: A trained technician can complete a full turret and tooling changeover in 60 to 90 minutes. The assembly utilizes a hydraulic swing-arm extraction crane and quick-release cam tracks, eliminating the requirement for heavy overhead factory lifting equipment during removal.

Q: Can this press handle direct-compression formulations with poor powder flowability?

A: Yes. The machine can be fitted with an independent frequency-controlled forced-feeding module. Dual-paddle agitators maintain positive pressure on the powder bed, forcing consistent volumes into die bores at high turret speeds and holding weight relative standard deviation (RSD) below 1.5%.

Q: What utility connections are required for facility installation?

A: Facility setup requires a 3-phase electrical supply (typically 380V or 480V, 50/60Hz), clean, dry, oil-free compressed air at 0.6 MPa (delivering 200 L/min) for pneumatic sorting and lubrication circuits, and an external dust extraction connection routed to a central negative-pressure dust collector.

Q: Which critical spare parts should be stocked locally to ensure zero unplanned downtime?

A: We recommend maintaining an inventory of upper and lower punch guide oil seals, polyurethane feeder belts, scraper blades, hydraulic overload rupture discs, and at least one complete replacement set of upper and lower punches and dies matched to your primary product geometry.

We're well-known as one of the leading tablet press manufacturers and suppliers in China. With abundant experience, we warmly welcome you to buy high quality tablet press for sale here from our factory. For price consultation, contact us.