01
Controlled Feeding
A screw feeder meters your material into the grinding chamber at a steady rate, so the rotor is never starved or flooded.
ACM Grinding Machine Manufacturer in India
Mecha Engineering designs and builds air classifying mills at its own works in Saharanpur, Uttar Pradesh, and supplies them to spice, food, nutraceutical, pharma, chemical and mineral processing plants across India and to export markets. Grinding and classification happen in one pass, so the powder leaves the mill at the fineness you set rather than one you sieve for afterwards.
- Fineness 10 to 150 microns
- Grinding and classifying in one pass
- Cool grinding for heat sensitive powders
- MS, SS 304 and SS 316 contact parts
- Made in India, supplied worldwide
10 to 150 µFineness set by classifier
SS 316Contact parts option
Dust freeCyclone and bag filter
Trial runOn your material before dispatch
ACM Grinding Machine in India
An ACM grinding machine, or air classifying mill, is what a plant reaches for when a screen mill is no longer good enough. Spice houses need turmeric and chilli ground fine without losing colour or volatile oil. Food and nutraceutical plants need sugar, starch, soya, protein and extract powders at a repeatable top size. Pharma units need actives and excipients micronised to a documented figure. Chemical, mineral and polymer plants need pigments, calcium carbonate, PVC and resin powders that carry no tail of oversize. In each of those cases the specification names a micron figure, and only a classifier holds it.
Mecha Engineering is an ACM grinding machine manufacturer in India, not a trader reselling imported mills. Every machine is designed, fabricated, assembled and trial run at our own works at Village Meharbani, Behat, Saharanpur, configured to your material and your target fineness. You deal with the people who cut the rotor and set the classifier, which is why a change of material grade, a different seal arrangement or a non standard feeder is a quotation here rather than a refusal.
- One pass, one fineness. The built in dynamic classifier returns oversize particles to the rotor, so the powder that leaves the mill is uniform instead of needing a sieving step behind it.
- Cool grinding for delicate products. A continuous air sweep carries heat away with the powder, which protects colour, aroma and volatile oils in spices and heat sensitive actives.
- Contact parts to suit the audit. MS for minerals and chemicals, SS 304 or SS 316 with a polished finish where a food, FSSAI or pharma auditor will look.
- Wear parts held at the works. Beaters, liners, classifier wheels, filter bags and gaskets are kept in stock and dispatched anywhere in India, with a recommended spares kit packed into export consignments.
Working principle
How an ACM Grinding Machine Works
Impact grinding and air classification sit inside one housing. That is the whole idea behind the machine, and the reason the output stays uniform.
02
Impact Grinding
A high speed rotor fitted with hammers or pins breaks the material down by impact and shear against the liner.
03
Dynamic Classification
The classifier wheel lets fine particles through and throws coarse ones back to the rotor for regrinding, which fixes the top size.
04
Collection
The air stream carries the fines to a cyclone and bag filter, where the powder drops out through a rotary airlock and the air leaves clean.
What you get with every mill
Four Commitments Behind Each Machine
These are the points a plant head or purchase head checks before approving a grinding machine order, so we put them in writing.
Trial on Your Material
Send a sample. We grind it, report the fineness and yield we reach, and size the machine on that result instead of on an assumption.
Verified Material Grade
MS, SS 304 or SS 316 on contact parts, with material test certificates, so the machine passes a food, FSSAI or pharma audit.
Service Across India and Abroad
Our engineers travel for erection, commissioning, classifier setting and wear part replacement anywhere in India and to export sites, and back your maintenance team afterwards.
Direct Manufacturer Pricing
You buy from the fabricator, not a dealer. No trading margin, and any change to MOC, motor or dust collection is quoted against actual cost.
Build features
Features of Mecha Engineering ACM Grinding Machines
Every feature below is there to keep one of three things under control: your particle size, your power bill, or the dust in your production hall.
01
Integrated Grinding and Classification
Grinding and separation happen in a single operation, so you reach a uniform fineness without a second sieving line behind the mill.
02
Fineness Control from the Panel
The classifier runs on a variable frequency drive. Raise the speed for a finer powder, drop it for a coarser one, without opening the machine.
03
Cool Grinding Technology
A continuous air sweep removes grinding heat with the product, which suits spices, food ingredients and pharmaceutical actives that lose quality when they warm up.
04
Hygienic and Dust Free Operation
A cyclone and bag filter keep the powder inside the system and the hall clean, which matters for both audits and operator safety.
05
Wear Resistant Grinding Elements
Hardened beaters and replaceable liners stand up to abrasive materials such as calcium carbonate and minerals, and can be changed without stripping the machine.
06
Compact Layout, Easy Access
A small footprint and quick opening access points keep cleaning and product changeover to a short job, which protects your production schedule.
Builds we supply
Types of ACM Grinding Machines We Supply in India
Six builds cover almost every grinding duty we see in Indian plants. Tell us the material and we will point you to the right one.
Standard ACM Mill
MS construction with hardened grinding elements, for minerals, fillers, chemicals and other non food powders where contact grade is not restricted.
Spice Grinding ACM
Food grade contact parts and a cool grinding air circuit for turmeric, chilli, coriander, cumin and pepper, so colour, aroma and volatile oil survive the mill.
Food and Nutraceutical ACM
Polished SS 304 or SS 316 wetted parts with drainable, cleanable surfaces for sugar, starch, flour, protein and herbal extract powders.
Pharma cGMP ACM
SS 316 contact parts, mirror polished finish, crevice free joints and documentation support for API, excipient and nutraceutical micronising duty.
Chilled Air and Cryogenic ACM
Chilled air or liquid nitrogen cooling for fatty, waxy, gummy and very heat sensitive products that smear or soften in an ambient mill.
Lab and Pilot Scale ACM
A small bench machine for R and D, product development and sample batches, built so that results scale up to the production mill that follows.
Technical data
ACM Grinding Machine Specifications
Standard build for our air classifying mills. Every line below can be changed to order, so treat this as the starting point for your enquiry.
| Parameter | Standard offering | Options on request |
|---|---|---|
| Machine Type | High speed impact mill with built in dynamic air classifier | Complete system with feeder, cyclone, bag filter and blower |
| Fineness Range | 10 to 150 microns, set by classifier speed | Finer cuts on selected materials after a sample trial |
| Capacity | Sized against your material, bulk density and target fineness | Lab and pilot scale machines, multiple mills on one collection system |
| Grinding Elements | Hardened hammer or beater rotor with replaceable liner | Pin disc rotor, special wear resistant facing for abrasive powders |
| Classifier | Dynamic classifier wheel on a variable frequency drive | Higher speed classifier for micron level cuts |
| Contact Parts | MS as standard on industrial duty machines | SS 304 or SS 316 throughout for food, nutraceutical and pharma duty |
| Surface Finish | Smooth machined contact surfaces | Matt or mirror polished finish for food and pharma audits |
| Feeding System | Screw feeder with variable frequency drive | Vibratory feeder, bulk bag unloading station, magnetic trap |
| Dust Collection | Cyclone, bag filter and rotary airlock valve | High efficiency filter media, explosion vent, nitrogen inert loop |
| Cooling | Ambient air sweep cool grinding | Chilled air circuit, liquid nitrogen cryogenic grinding |
| Motors | TEFC motors on mill, classifier and blower | Flameproof motors for hazardous areas, energy efficient IE3 motors |
| Control Panel | Panel with starters, ammeters and classifier drive | PLC and HMI with recipe storage and trend logging |
| Power Supply | 415 V, 3 phase, 50 Hz | Supply voltage to suit an export site |
| Documentation | GA drawing, trial report, operating manual | Material certificates, IQ and OQ documents, spare parts list |
Scroll the table sideways on a mobile screen. Send your material, moisture, bulk density and target fineness and we will fill this sheet in against your duty.
Choosing a machine
Which ACM Build Does Your Plant Need?
The material decides the build. This is the shortlist we work through with buyers on the first call.
| Material | Recommended build | Contact parts and cooling | Typical user |
|---|---|---|---|
| Turmeric, Chilli, Coriander, Cumin | Spice grinding ACM with cool grinding circuit | SS 304 or SS 316, ambient or chilled air | Spice mills at Sangli, Unjha, Guntur and Mandsaur |
| Sugar and Icing Sugar | Food grade ACM with anti caking feed control | SS 304, dehumidified or chilled air | Confectionery, bakery and sweet units |
| Starch, Flour and Grain Powders | Food grade ACM, standard rotor | SS 304, ambient air sweep | Starch, soya, maize and flour mills |
| Protein and Herbal Extract Powders | Food and nutraceutical ACM, polished finish | SS 316, chilled air on hygroscopic powders | Nutraceutical and ayurvedic plants |
| API and Excipients | Pharma cGMP ACM, crevice free build | SS 316, mirror polish, documented cleaning | Pharma and API units |
| Pigments, Dyes and Resin Powders | Standard ACM, high efficiency filtration | MS or SS 304, flameproof motors where needed | Dye, pigment, ink and paint plants |
| Calcium Carbonate and Minerals | Standard ACM with wear resistant rotor and liner | MS with hardened facing, ambient air | Mineral, filler and PVC compounding units |
| Waxy, Fatty or Gummy Products | Chilled air or cryogenic ACM | SS 304 or SS 316, liquid nitrogen cooling | Food, wax and specialty chemical plants |
Material not in the list? Share its name, moisture content and target fineness and we will confirm the build and the cooling arrangement before quoting.
How we work
How We Supply an ACM Grinding Machine in India, Step by Step
Six steps from your first call to a mill running on your line. The same sequence applies whether you order one machine or a complete grinding section.
01
Material Data Sheet
You share the material, moisture, bulk density, feed size and the fineness you need, or we visit the plant and take the details with your production team.
02
Sample Trial
Send a sample of your material. We grind it, record the fineness and the throughput reached, and share the result before anything is quoted.
03
Machine Selection
Our engineers fix the model, rotor, classifier, MOC and dust collection for that result, and send a specification sheet with a GA drawing and price for approval.
04
Manufacturing
Housing, rotor, classifier and ducting are fabricated and finished at our Saharanpur works, then assembled with the approved motors and panel.
05
Trial Run and Dispatch
The complete system is run at the works for vibration, current draw and air balance, and the readings go into the trial report before it travels by road, or is packed for container shipment on an export order.
06
Erection and After Sales
Our team erects and commissions the mill, sets the classifier against your target fineness, and supplies wear parts and planned service visits afterwards, in India and at export sites.
Where these machines are used
Industries We Supply ACM Grinding Machines to in India
Spice Processing Units
Turmeric, chilli, coriander, cumin and pepper grinding for the spice belts of Sangli, Unjha, Guntur, Mandsaur, Bikaner and Hathras, where colour and volatile oil decide the grade.
Food, Beverage and Nutraceutical Plants
Sugar, starch, soya, maize, flour, protein and extract powders for food, beverage and nutraceutical plants across the country.
Pharmaceutical Units
Active ingredient, excipient and intermediate micronising for formulation and API plants, with cGMP build and documentation support.
Chemical, Dye and Pigment Plants
Pigments, dyes, resin powders, agro chemicals and intermediates in the chemical belts of Gujarat, Maharashtra, Haryana and the south.
Minerals, Fillers and Plastics
Calcium carbonate, talc, dolomite, quartz, bentonite and PVC compound grinding for mineral, filler and polymer processors.
Ayurvedic, Herbal and Agro Processing
Herb, root, bark, seed, gum and forest produce powders for ayurvedic, nutraceutical and agro units, where a cool grind holds the active content.
Supply and service network
ACM Grinding Machine Supplier Across India
Machines are dispatched from our Saharanpur works to plants across the country. These state pages cover the local industry, districts and typical materials in more detail.
- ACM Grinding Machine Manufacturer in Uttar Pradesh
- ACM Grinding Machine Manufacturer in Maharashtra
- ACM Grinding Machine Manufacturer in Gujarat
- ACM Grinding Machine Manufacturer in Madhya Pradesh
- ACM Grinding Machine Manufacturer in Rajasthan
- ACM Grinding Machine Manufacturer in Haryana
- ACM Grinding Machine Manufacturer in Bihar
- ACM Grinding Machine Manufacturer in Uttarakhand
- ACM Grinding Machine Manufacturer in Jharkhand
- ACM Grinding Machine Manufacturer in Chhattisgarh
State not listed? We supply and service ACM grinding machines in every state and union territory of India, and export to Africa, the Middle East and South East Asia, including Zimbabwe.
Questions we are asked
ACM Grinding Machine in India: FAQs
Straight answers to what buyers ask before placing a grinding machine order.
What is an ACM grinding machine?
An ACM grinding machine, or air classifying mill, is a high speed impact mill with a built in dynamic air classifier. It grinds material to a fine, controlled particle size, and the classifier returns oversize particles to the rotor for regrinding so the powder leaving the mill stays uniform. Fineness is set by classifier speed rather than by changing a screen, which is what separates it from an ordinary pulveriser.
Who is an ACM grinding machine manufacturer in India?
Mecha Engineering Pvt. Ltd. manufactures ACM grinding machines, also called air classifying mills, at its own works in Village Meharbani, Behat, Saharanpur, Uttar Pradesh. Machines are designed, fabricated, assembled and trial run in the same factory and supplied to spice, food, nutraceutical, pharma, chemical and mineral processing plants across India, as well as to export markets.
How does an ACM grinding machine work?
Material is fed into the grinding chamber by a screw feeder and broken down by a high speed rotor fitted with hammers or pins. A built in dynamic classifier lets fine particles pass to the outlet and throws coarse particles back to the rotor for regrinding. The fines travel with the air stream into a cyclone and bag filter, where the powder is collected and the air leaves clean.
What fineness can an ACM grinding machine achieve?
Our ACM mills work in a range of roughly 10 to 150 microns, and the figure is set by the classifier speed and the air flow rather than by changing a screen. Because the classifier runs on a variable frequency drive, the operator can move within that range from the panel. Share your target particle size and we will confirm it on a sample trial.
Which materials can an ACM grinding machine grind?
Spices such as turmeric, chilli, pepper, coriander and cumin, food products such as sugar, starch, protein powders and flours, pharmaceutical actives and excipients, and chemicals and minerals such as pigments, calcium carbonate, PVC and resin powders. It also handles heat sensitive and fibrous materials that need a fine, controlled result.
Can an ACM mill grind heat sensitive products like spices?
Yes. The continuous air sweep through the mill carries grinding heat away with the powder, which is why the method is called cool grinding. That protects colour, aroma and volatile oil in spices and keeps heat sensitive food and pharmaceutical products within specification. For fatty, waxy or very delicate products we supply a chilled air or liquid nitrogen cryogenic circuit.
What material of construction options are available?
Contact parts are built in MS, SS 304 or SS 316 depending on the product and the industry. Stainless steel with a polished finish is used for food, nutraceutical and pharma duty, while MS with hardened grinding elements suits minerals, fillers and industrial chemicals.
How is an ACM grinding machine different from a pulveriser or a multi mill?
A pulveriser or multi mill sets the particle size with a screen, so the output carries a wider spread and usually needs sieving afterwards. An ACM uses a dynamic air classifier instead of a screen, so oversize particles are returned for regrinding and the powder leaves at a controlled top size in one pass. That matters when a specification names a micron figure rather than a mesh.
Does the machine come with a dust collection system?
Yes. The standard supply includes a cyclone, a bag filter and a rotary airlock valve, so the powder stays inside the system and the production hall stays clean. High efficiency filter media, explosion vents and a nitrogen inert loop are available where the material or the area classification calls for them.
Can you run a trial on our material before we place the order?
Yes, and we prefer it. Send a sample of your material with the fineness you are targeting. We grind it, record the particle size and the throughput reached and share the result, then size the machine on that trial rather than on an assumption about your product.
What does an ACM grinding machine cost in India?
Price depends on the capacity, the fineness you need, MS against SS 304 or SS 316 contact parts, the dust collection arrangement, the cooling circuit and whether flameproof motors or a PLC panel are required. Because these change the figure widely, we do not publish a single price. Send your material and target fineness and a specification sheet with price follows the sample trial.
Do you provide installation and service for ACM mills in India?
Yes. We provide installation support, commissioning, classifier setting, operator training and spares, in India and in export markets. Beaters, liners, classifier wheels, filter bags and gaskets are held in stock at the works, and a recommended spares kit is packed with machines going overseas.
Talk to the specialist
Get Your ACM Grinding Machine Quoted This Week
Share the material you grind, its moisture and the fineness you need. Our Saharanpur engineering team returns a trial result, a machine selection, a specification sheet and a price so you can compare on paper rather than on promises.