Controlled Feeding
A screw feeder meters your material into the grinding chamber at a steady rate, so the rotor is never starved or flooded.
Mecha Engineering designs and builds air classifying mills at its own works in Saharanpur, and supplies them to spice units, food and nutraceutical plants, pharma units, chemical and mineral processors across Uttar Pradesh. Grinding and classification happen in one pass, so the powder leaves the mill at a fineness you set rather than one you sieve for afterwards.
Uttar Pradesh grinds a very wide range of powders. Turmeric, chilli, coriander and cumin in the spice belt around Hathras, Chandausi, Agra and Kanpur. Starch, sugar, flour and protein powders in the food units of Noida, Ghaziabad, Bareilly and Gorakhpur. Active ingredients and excipients in the pharma and nutraceutical plants of Ghaziabad, Noida and Lucknow. Pigments, calcium carbonate, PVC and resin powders in the chemical belt of Kanpur, Unnao and western UP. In every one of them, the buyer is judged on one number: how tight the particle size is.
Mecha Engineering is an ACM grinding machine manufacturer in Uttar Pradesh, not a trader bringing mills in from another state. Every ACM grinding machine is fabricated, assembled and trial run at our Saharanpur works, configured to your material and your target fineness. Because the factory is inside the state, spares, wear parts and service visits reach UP plants on a short road haul rather than a courier queue.
Impact grinding and air classification sit inside one housing. That is the whole idea behind the machine, and the reason the output stays uniform.
A screw feeder meters your material into the grinding chamber at a steady rate, so the rotor is never starved or flooded.
A high speed rotor fitted with hammers or pins breaks the material down by impact and shear against the liner.
The classifier wheel lets fine particles through and throws coarse ones back to the rotor for regrinding, which fixes the top size.
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.
These are the points a plant head or purchase head in Uttar Pradesh checks before approving a grinding machine order, so we put them in writing.
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.
MS, SS 304 or SS 316 on contact parts, with material test certificates, so the machine passes a food, FSSAI or pharma audit.
Our team travels from Saharanpur for erection, commissioning, classifier setting and wear part replacement at plants across Uttar Pradesh.
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.
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.
Grinding and separation happen in a single operation, so you reach a uniform fineness without a second sieving line behind the mill.
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.
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.
A cyclone and bag filter keep the powder inside the system and the hall clean, which matters for both audits and operator safety.
Hardened beaters and replaceable liners stand up to abrasive materials such as calcium carbonate and minerals, and can be changed without stripping the machine.
A small footprint and quick opening access points keep cleaning and product changeover to a short job, which protects your production schedule.
Six builds cover almost every grinding duty we see in UP plants. Tell us the material and we will point you to the right one.
MS construction with hardened grinding elements, for minerals, fillers, chemicals and other non food powders where contact grade is not restricted.
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.
Polished SS 304 or SS 316 wetted parts with drainable, cleanable surfaces for sugar, starch, flour, protein and herbal extract powders.
SS 316 contact parts, mirror polished finish, crevice free joints and documentation support for API, excipient and nutraceutical micronising duty.
Chilled air or liquid nitrogen cooling for fatty, waxy, gummy and very heat sensitive products that smear or soften in an ambient mill.
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.
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.
The material decides the build. This is the shortlist we work through with UP buyers on the first call.
| Material | Recommended build | Contact parts and cooling | Typical UP user |
|---|---|---|---|
| Turmeric, Chilli, Coriander, Cumin | Spice grinding ACM with cool grinding circuit | SS 304 or SS 316, ambient or chilled air | Spice mills and masala packers |
| 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, food processing and flour units |
| 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 units in Ghaziabad, Noida, Lucknow |
| Pigments, Dyes and Resin Powders | Standard ACM, high efficiency filtration | MS or SS 304, flameproof motors where needed | Chemical, dye and paint units |
| Calcium Carbonate and Minerals | Standard ACM with wear resistant rotor and liner | MS with hardened facing, ambient air | Fillers, minerals 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.
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.
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.
Send a sample of your material. We grind it, record the fineness and the throughput reached, and share the result before anything is quoted.
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.
Housing, rotor, classifier and ducting are fabricated and finished at our Saharanpur works, then assembled with the approved motors and panel.
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.
Our team erects and commissions the mill, sets the classifier against your target fineness, and supplies wear parts and service visits from Saharanpur.
Turmeric, chilli, coriander, cumin and pepper grinding for spice mills and masala packers in Hathras, Chandausi, Agra, Kanpur and the western UP belt.
Sugar, starch, flour, cocoa and dairy powders in food processing units from Noida and Ghaziabad to Bareilly, Varanasi and Gorakhpur.
API, excipient, herbal extract and protein powder micronising in the pharma and nutraceutical plants of Ghaziabad, Noida, Lucknow and Kanpur.
Pigments, dyes, resin powders and specialty chemicals in the chemical units of Kanpur, Unnao and the industrial areas of western UP.
Calcium carbonate, talc, dolomite and PVC compound grinding for filler and plastic processing units across the state.
Herb, root, leaf and seed powders for ayurvedic, agro product and animal feed units, where a fine, uniform powder decides the grade.
Machines are dispatched by road from our Saharanpur works and serviced by our own team. These are the districts we supply most often.
District not listed? The list shows where we see the most orders. We supply and service ACM grinding machines in all 75 districts of Uttar Pradesh, and across the rest of India.
Straight answers to what UP buyers ask before placing a grinding machine order.
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 the state.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Yes. Our service team travels from Saharanpur for erection, commissioning, classifier setting, operator training and wear part replacement at plants across Uttar Pradesh. Beaters, liners, classifier wheels, filter bags and gaskets are held in stock at the works for machines already running in the state.
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.