A pharmaceutical vibro sifter is used to sift active ingredients, excipients and granules to a controlled particle size before blending, compression, capsule filling or packing. Sterial Machinery is a pharma vibro sifter supplier and manufacturer in Ahmedabad, building machines with SS 316 contact parts, lead-free silicone-sealed sieves and a cGMP-oriented layout that is quick to dismantle and clean.
Where a Vibro Sifter Fits in a Pharma Line
| Stage | Purpose of sifting | Typical mesh |
|---|---|---|
| Dispensing / raw material | Break up lumps, remove foreign particles from API and excipients | 20–40 |
| Before wet granulation | Uniform starting powder for consistent granulation | 30–60 |
| After drying (FBD / tray dryer) | Separate oversize for milling, recover on-size granules | 16–30 |
| Lubrication / final blend | Sift lubricant and glidant before adding to blend | 40–60 |
| Before compression / filling | Check-screen final blend for uniform flow | As per product |
Typical mesh values are general guidance from common practice; your product's master formula decides the actual screen.
Design Points for Pharmaceutical Use
- SS 316 contact parts and screens – suited to frequent wet cleaning and a wide range of APIs.
- Lead-free, silicone-sealed sieves – no lead solder in contact with product.
- Quick-release clamps – screens and covers come off without tools for cleaning and product changeover.
- Portable base on castors – the sifter can be moved out of the cubicle for washing.
- Dust-tight lid – reduces operator exposure and cross-contamination during sifting.
- Optional vacuum transfer – closed transfer of sifted material to a bin or blender; see customized solutions.
Recommended Models for Pharma Plants
For R&D and pilot batches, the 12″ and 20″ models are common. Commercial tablet and capsule lines usually use 30″ or 36″ machines, while large granulation suites may use 48″. Indicative outputs and heights are in the table below; we confirm the size after reviewing your batch size and cycle time.
| Model (screen dia.) | 12" | 20" | 24" | 30" | 36" | 48" | 60" | 72" |
|---|---|---|---|---|---|---|---|---|
| Output (kg/hour)* | 25–100 | 50–200 | 50–250 | 75–300 | 100–400 | 125–500 | 150–1000 | 200–1500 |
| Charging height (mm) | 700 | 1000 | 1015 | 1210 | 1220 | 1200 | 1150 | 1190 |
| Discharge height (mm) | 480 | 610 | 610 | 750 | 700 | 660 | 640 | 640 |
| Total height (mm) | 720 | 1020 | 1035 | 1230 | 1240 | 1220 | 1170 | 1210 |
| Electric motor | 0.25 HP | 0.5 HP | 0.5 HP | 0.5 HP | 1 HP | 1.5 HP | 2 HP | 3 HP |
Choosing a Pharma Vibro Sifter Supplier
When comparing suppliers, look beyond the price. Ask for the grade of contact parts, how screens are sealed, how the machine is cleaned, what documents are supplied, and how fast spare screens can be delivered. Sterial Machinery manufactures in-house in Ahmedabad and also makes multi mills, blenders and dust extractors, so the sifter can be planned together with the rest of your granulation line. Documents such as GA drawings and material certificates can be confirmed at the quotation stage; see quality assurance.
Cleaning and Changeover
A typical changeover involves releasing the clamps, removing the lid, screens and frames, washing all contact parts, drying them and reassembling with an inspected screen. Keep a dedicated screen set per product family where cross-contamination is a concern. Our cleaning and maintenance guide gives a step-by-step routine.
More on pharmaceutical applications: vibro sifter for pharma industry.
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Frequently Asked Questions
Is your pharmaceutical vibro sifter cGMP compliant?
The design follows cGMP requirements: SS 316 contact parts, lead-free silicone-sealed sieves, smooth surfaces and easy dismantling for cleaning. Validation documents needed by your QA team should be listed in your inquiry.
Can one sifter be used for several products?
Yes, with proper cleaning between products. Many plants keep separate screen sets for different product families.
Which size is right for a tablet line?
It depends on batch size and cycle time. 30" and 36" models are common on commercial lines; 12"–20" suit R&D and pilot work.
Do you supply pharma vibro sifters outside Gujarat?
Yes. We supply pharmaceutical plants across India, including Maharashtra, Telangana and Himachal Pradesh.
