Jiangsu Hongda Powder Equipment Co., Ltd. builds the GK Series roller compactor in Jiangyin, China. This guide explains how the machine works, where it fits, how it compares with wet granulation, and what to check before you request a quotation. Use it to compare suppliers and choose the right dry granulation machine for your powder.
GK Series Dry Granulator Machine with 20-300 kg/h Output
The GK Series is a roller compactor dry granulator for continuous industrial production. It comes in three models: GK-70, GK-120 and GK-250. Output ranges from 20 to 300 kg/h, depending on the model and your material. The feeding size is 0.4-6 mm for all three models.Other names for the same type of machine include dry granulation machine, dry powder granulator, roll press granulator and dry compaction granulator. If your supplier uses one of these terms, they are describing the same working principle.
Key points at a glance
• Output of 20-300 kg/h across three models• No water, ethanol or liquid binder in the process
• Normal-temperature mechanical compaction, with no heating stage
• Suited to pharmaceutical, food, feed, chemical and herbal powders
• Granules suitable for tableting, capsule filling and granule products
Actual output depends on bulk density, flowability, particle size and the formula you process. A test with your own material gives the most reliable figure.
Roller Compactor Dry Granulation Machine for Pharmaceutical Powders
Many pharmaceutical powders do not tolerate wet processing. Moisture can trigger degradation, and drying can damage active ingredients. Dry granulation avoids both problems. The powder stays dry from feeding to discharge.A pharmaceutical dry granulator also improves powder flow. Fine powders often stick, bridge in hoppers and fill tablet dies unevenly. Granules flow better and fill more consistently, which supports stable tablet weight.
If you work under GMP rules, tell the supplier early. Share your requirements for surface finish, material of contact parts, cleaning and documentation. This lets the engineering team review your needs before the quotation.
Industrial Dry Granulator for Food, Feed and Chemical Powders
An industrial dry granulator is not limited to medicine. The same process helps other industries that struggle with dusty, light or caking powders.• Food additives: improve flow and reduce dust in dosing and packing
• Feed additives: make powders easier to handle, store and blend
• Chemical powders: raise bulk density and cut dust losses
• Health products: prepare granules for capsules, sachets and tablets
Denser granules also reduce storage volume and shipping space. For export buyers, that can lower packaging and freight costs per tonne of product.
Dry Granulation Without Water, Ethanol or Liquid Binder
Wet granulation needs a liquid, a mixing stage and a drying stage. A dry granulator removes all three. You feed powder in and collect granules at the outlet.This brings practical benefits for your plant:
• Shorter process: no wetting, no drying oven, no drying time
• Lower energy use: no heat is needed to remove moisture or solvent
• Safer handling: no ethanol storage or solvent vapor control
• Less risk to the product: no water contact that could change the material
These advantages are strongest when the formula already compacts well. Some materials need a small amount of dry binder to form strong granules. Your supplier can advise after a trial.
Low-Temperature Roller Compactor for Heat-Sensitive Materials
The GK Series works by mechanical extrusion at normal temperature. No external heating is used. That makes this roller compactor a good option for heat-sensitive, easily decomposed or activity-sensitive powders, including many herbal and biological materials.Compression always creates a small amount of friction heat. You can control it through roller pressure, roller speed and feed rate. If your material is very sensitive, ask the supplier about cooling options and trial settings.
How a Dry Granulator Works: Compacting, Crushing and Sieving
The process has four simple steps:1. Feeding: a screw feeder moves dry powder into the gap between two pressing rollers.
2. Compacting: the rollers squeeze the powder under high pressure and form dense sheets or flakes.
3. Crushing: a granulating unit breaks the sheets into smaller pieces.
4. Sieving: a screen separates granules of the target size. Oversized pieces go back for crushing. Fine powder can return to the hopper.
Because fine powder can return to the feed, material loss stays low. For tighter size control after granulation, many plants add a vibrating screening machine to grade the final granules.
Dry Granulator vs Wet Granulator: Which Machine Should You Choose?
Neither method is better in every case. The right choice depends on your material. Use this table as a starting point:| Factor | Dry granulator (roller compactor) | Wet granulator |
| Liquid binder | Not required | Required |
| Drying step | Not needed | Needed |
| Heat exposure | Low; normal-temperature process | Higher, because of drying |
| Moisture-sensitive materials | Well suited | Often unsuitable |
| Process steps | Feed, compact, crush, sieve | Mix, wet, granulate, dry, sieve |
| Fine powder | Some fines; can be recycled | Fewer fines |
| Best for | Heat- or water-sensitive powders | Formulas that need a liquid binder |
Be aware of one trade-off. Roller compaction produces some fine powder, and the granules are more angular than wet granules. Most buyers manage this with proper sieving and recycling.
Dry Powder Granulator for Tablet Pressing and Capsule Filling
Granules from a dry powder granulator feed directly into downstream equipment. They are widely used for:• Tablet pressing
• Oral granule and sachet products
• Capsule filling
• Blending with other ingredients before packing
Good granules reduce segregation, which is the separation of fine and coarse particles during handling. If you plan to blend granules with other ingredients, a ribbon mixer can prepare the powder before granulation or mix the finished granules afterward.
Chinese Herbal and Medicine Powder Dry Granulator Machine
Herbal and traditional medicine powders are often light, sticky or sensitive to moisture and heat. A Chinese herbal dry granulator lets you form granules without adding water or solvent. This protects active components and keeps the process simple.When you request a quotation for herbal powder, share these details:
• Material name and form (extract, fine powder, dried powder)
• Moisture content and bulk density
• Particle size of the feed
• Target granule size and daily output
With this information, the technical team can suggest a suitable medicine powder dry granulator model and settings.
Stable, Low-Maintenance Roller Compactor for Continuous Production
Buyers rarely worry only about the purchase price. They also care about downtime. The GK Series uses a reasonable structural design for stable operation and simple daily maintenance, which suits long production runs.
To keep any roller compactor running well, plan these routine checks:
• Inspect roller surfaces and the roller gap on a regular schedule
• Lubricate moving parts as the manual specifies
• Check screens for wear and blockage
• Keep a small stock of wear parts
Ask your supplier for a spare parts list at the quotation stage, so you know what to stock.
Dry Granulator Technical Parameters: GK-70, GK-120 and GK-250
The table below shows the standard specifications of the GK Series dry granulator.| Model | Production | Feeding size | Working pressure | Motor power | Overall dimension | Weight |
| GK-70 | 20-60 kg/h | 0.4-6 mm | 198 kN | 7.15 kW | 1380 × 850 × 2200 mm | 1600 kg |
| GK-120 | 60-200 kg/h | 0.4-6 mm | 294 kN | 13.75 kW | 1850 × 1100 × 2600 mm | 2000 kg |
| GK-250 | 80-300 kg/h | 0.4-6 mm | 294 kN | 25 kW | 2080 × 1240 × 2920 mm | 3000 kg |
Uniform, High-Density Granules with Good Flowability
The granule quality you get depends on both the machine and your process settings. These factors matter most:• Roller pressure: higher pressure gives denser, stronger granules
• Feed rate: it must match the roller speed for steady compaction
• Roller speed: it affects both output and fine powder content
• Material properties: moisture, particle size and compressibility change the result
• Screen size: it sets the final granule size
A good dry granulation machine lets you adjust these settings and repeat them batch after batch. Ask for a test with your sample so you can check granule size, density and flow before you buy.
Direct Factory Supply of Dry Granulation Machines from Jiangsu Hongda
Jiangsu Hongda was founded in 1992. The company makes pulverizers, screening machines, mixers, granulators, dryers and conveyors for the pharmaceutical, food and chemical industries. Its website lists ISO 9001:2015 and CE certification and states that its machines have been exported to more than 20 countries.Buying from the factory gives you direct access to engineers. It also makes customization easier. Before you choose any supplier, use this checklist:
• Ask for copies of certificates and check that they match the machine model
• Request a trial or test report with your own material
• Ask for drawings, a parts list and the wiring diagram
• Confirm warranty terms and how spare parts are shipped
• Check what installation and commissioning support is included
Hongda provides online installation guidance, commissioning videos and technical consultation for overseas projects. This helps buyers who cannot send engineers to site.
Dry Granulator Machine Price, Customization and Fast Delivery
What affects the price
There is no single price for a dry granulator machine. The quotation depends on:• Model and output capacity
• Material and finish of contact parts
• Control system and automation level
• Feeding, dust collection and discharge options
• Voltage, frequency and local standard requirements
• Packing method and shipping destination
Customization
Hongda offers customized powder solutions. If you need a special configuration, send your material details and plant conditions. The design team can then propose a suitable layout and provide drawings.Delivery and export support
Delivery time depends on the model and configuration, and the sales team confirms it in the quotation. For export orders, ask about export packing, shipping documents and incoterms such as FOB or CIF. Clear answers at this stage prevent delays later.Frequently Asked Questions About Dry Granulator Machines
1. What is a dry granulator used for?
A dry granulator turns fine powder into uniform granules without liquid binder. Buyers use it to improve flow, raise bulk density and prepare material for tableting, capsule filling and granule products.2. What is the difference between a dry granulator and a roller compactor?
They usually describe the same type of equipment. A roller compactor is the part that presses powder into sheets. A complete dry granulator also includes the crushing and sieving units that turn those sheets into granules.3. Which materials can a dry granulator process?
It handles pharmaceutical powders, herbal powders, food additives, feed additives and chemical powders. It works especially well for moisture-sensitive and heat-sensitive materials. Very oily or highly elastic powders may need a trial first.4. How much can the GK Series produce?
GK-70 produces 20-60 kg/h, GK-120 produces 60-200 kg/h, and GK-250 produces 80-300 kg/h. Real output depends on your material.5. Can the machine be customized?
Yes. You can discuss options such as contact-part material, control system, feeding method and voltage with the sales team. Send your requirements for a tailored proposal.6. What information do I need to send for a quotation?
Send your material name, moisture content, bulk density, feed particle size, target granule size, required output per hour and destination country. This helps the team recommend the right model quickly.Choose the Right Dry Granulator for Your Powder
A dry granulator gives you a simple, water-free way to make uniform granules from sensitive powders. It shortens the process, protects your material and prepares granules for tableting, capsule filling and other downstream steps. The GK Series covers 20-300 kg/h in three models.If you want product details, a quotation or a material test, please contact us. Send your powder specifications and target output. Our team will help you choose a suitable model and answer your technical questions.
| Request a Quote or Free Technical Advice Jiangsu Hongda Powder Equipment Co., Ltd. Email: alicexu@hongdamach.com WhatsApp / Phone: +86 13861633562 Website: https://hdpowdermachine.com/ |