Quick answer. The decision on this page is to order by syllabus, not by code. The listing holds several hundred records, many of them copies of products filed elsewhere on the site, usually recognisable by a digit on the end of the name, and the codes will change as those duplicates are consolidated. Most core mechanical operations units - the roll crusher, trommel, vibrating screen, and the sedimentation and filtration units - are filed in other ranges. Send your experiment list, and ask for every line to be confirmed by full name and by type (model, demonstration unit or instrumented test set) on the proforma invoice.
This is one of the largest listings on the site - several hundred records over more than fifty pages - and we would rather be straight with you about it than let you page through it.
If you came looking for mechanical operations in the chemical engineering sense - size reduction, screening, mixing, filtration, sedimentation and solids handling - the main items are not here. The roll crusher, the trommel and the vibrating screen are currently filed under structural mechanics lab, and the sedimentation, fluidisation and filtration units are under chemical reaction engineering and mass transfer lab equipment. Tell us which unit operations your syllabus examines and we will quote them from wherever they sit; the section below sets out what to ask for.
What this listing actually contains is a large general collection of mechanics and workshop teaching equipment: mechanism and gear models, machine element models such as couplings, foundation bolts and locking arrangements for bolts, working models of cranes and winches, pumps and turbines, manometers and pitot tubes, and a quantity of physics laboratory apparatus - pendulums, Young modulus and rigidity of wires experiments, barometers and Hooke's law apparatus.
A warning that applies to this listing more than to any other. Many of its records are copies of products that also appear elsewhere on this site, and most of the copies can be recognised by a digit on the end of the name - for example a Bernoulli theorem apparatus, a metacentric height apparatus and a piezometer tube that duplicate items in hydraulics and fluid mechanics trainers, and gear and turbine records that duplicate items in engineering training models. So on this listing: do not order by code, ask for the full product name and specification, and ask us to confirm both on the proforma invoice. We are consolidating the duplicate records, and the codes will change when we do.
Since the category name is what brought most visitors here, here is the subject itself - the three jobs mechanical operations equipment does, and what to ask for in each. Send us the rows that match your syllabus and we will quote against them.
| Job | Typical teaching equipment | What to settle before ordering |
|---|---|---|
| Size reduction | Jaw crusher, roll crusher, ball mill, hammer mill, pulveriser | Feed size and product size range; the energy measurement, because the experiment is usually the energy law - the relation between energy input and size reduction - and that needs a power measurement on the mill, not just a stopwatch; noise, dust and guarding; and the sieve set needed to measure the product |
| Separation | Vibrating screen, trommel, sieve shaker, cyclone, plate and frame filter press, leaf filter, thickener, centrifuge, elutriator | How the result is quantified: a screening experiment is only as good as the sieve set and the balance behind it, and a filtration experiment needs a measured filtrate volume against time. Ask what slurry or feed material the exercise assumes and whether it can be sourced locally |
| Transport and handling | Belt, screw and pneumatic conveyors, bucket elevator, fluidised bed, pumps and fans | Capacity and power measurement, the material conveyed, and dust control. For pneumatic conveying ask the air supply requirement, which is usually larger than people expect |
Two requirements run across all three and are routinely left out of a quotation. A sieve set and a balance, because almost every mechanical operations result is a particle size distribution and nothing in this subject can be quantified without them. And dust control: crushers, mills, screens and conveyors generate airborne dust, some of it respirable, so extraction or enclosure, eye protection and respiratory protection belong in the specification rather than in a footnote. Ask us what each unit needs.
Mechanism, gear and machine element models. Couplings, bolt locking arrangements, foundation bolts, gear trains and epicyclic gears, cranes and winch models. These are display and tutorial items: ask what they are made of, whether moving parts actually move, whether the base can be clamped, and whether a labelled sheet comes with each. The organised version of this range, with a priority order for buying, is in engineering training models.
Pumps and turbines. Centrifugal pumps, rotary pumps, Pelton turbines, water wheels and impeller sets. For anything intended to be characterised rather than looked at, the four quantities needed are flow, head, speed and shaft torque - the reasoning is set out on our pump and turbine pages, and the units there are specified for measurement. Ask whether the record here is a working test set or a demonstration model, because the listing does not say.
Manometers, pitot tubes and fluid apparatus. Several of these duplicate the instruments in hydraulics and fluid mechanics trainers, where the fluid, datum and steady-state requirements are set out - including the question to settle before ordering any manometer, which is whether it is mercury-filled.
Physics apparatus. Pendulums, Young modulus and rigidity of wires experiments, Hooke's law apparatus and barometers belong to a physics laboratory rather than a mechanical operations one, and they are better bought from the physics ranges where they are properly described. Ask us and we will point you to the right listing.
Because of the state of this listing, the order of questions matters more than usual. First, send us your syllabus or experiment list rather than a list of codes. Second, ask us to confirm for every line: the full product name, what the item actually is - model, demonstration unit or instrumented test set - the quantities it measures and how, what is supplied with it, its mass and footprint, the services it needs, and the consumables with prices. Third, ask for the sieve set, balance and dust control provisions to be quoted with any size reduction or screening equipment. And ask for everything to be confirmed on the proforma invoice by name as well as code. For any certification stated here, contact us for the latest copies of the relevant certificates before you tender on it.
Related ranges: chemical reaction engineering for reactors, columns, sedimentation and fluidisation, mass transfer lab equipment for dryers, extraction and diffusion, momentum transfer lab equipment for packed beds and two-phase flow, machines for thermodynamics, structures and tribology, and models for theory of machines for dynamics apparatus. The full set is listed under mechanical lab equipments. For a quotation, tell us the destination country, the syllabus you teach and the class size in one practical session.
Mostly not in this listing. The roll crusher, the trommel and the vibrating screen are currently filed under the structural mechanics lab range, and the sedimentation, fluidisation and filtration units sit under chemical reaction engineering and mass transfer lab equipment. Rather than searching for them, tell us which unit operations your syllabus examines - size reduction, screening, mixing, filtration, sedimentation or solids handling - and we will quote each one from wherever it sits, confirmed by full product name.
Many records here are copies of products that also appear elsewhere on the site, and most can be recognised by a digit on the end of the name. A Bernoulli theorem apparatus, a metacentric height apparatus and a piezometer tube duplicate items in hydraulics and fluid mechanics trainers, and some gear and turbine records duplicate items in engineering training models. The duplicates are being consolidated and the codes will change when that happens, so ask for the full name and specification on every line.
Typical teaching equipment is a jaw crusher, roll crusher, ball mill, hammer mill or pulveriser. Settle the feed size and product size range first, then the energy measurement: the experiment is usually the energy law relating energy input to size reduction, which needs a power measurement on the mill, not just a stopwatch. Ask about noise, dust and guarding, and have the sieve set needed to measure the product quoted at the same time, because the result is a particle size distribution.
Almost every mechanical operations result is a particle size distribution, and nothing in the subject can be quantified without a sieve set and a balance; a screening experiment is only as good as both. Crushers, mills, screens and conveyors also generate airborne dust, some of it respirable, so extraction or enclosure, eye protection and respiratory protection belong in the specification rather than in a footnote. These items are routinely left out of quotations, so ask for them alongside any size reduction or screening unit.
The listing does not say, so ask for each record. It includes centrifugal and rotary pumps, Pelton turbines, water wheels and impeller sets. For anything you intend to characterise rather than look at, the four quantities needed are flow, head, speed and shaft torque, and the units on our dedicated pump and turbine pages are specified for that measurement. For the manometers in this listing, settle first whether the instrument is mercury-filled, as set out in the hydraulics and fluid mechanics trainers range.
Send your syllabus or experiment list rather than a list of codes. Then ask us to confirm for every line the full product name; whether it is a model, a demonstration unit or an instrumented test set; the quantities it measures and how; what is supplied with it; its mass and footprint; and the services it needs. Add the destination country and the class size in one practical session. For pneumatic conveying, also ask for the air supply requirement, which is usually larger than people expect.
Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.
Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.
Specifications for every line, including what the item actually is, what it measures, its mass, footprint and services, are confirmed in writing on the quotation. For any certificate, contact us for the latest copies of the relevant certificates. No price is quoted on this page. Listing notes: several hundred records spread over more than fifty listing pages; many records duplicate products in hydraulics and fluid mechanics trainers and in engineering training models, usually marked by a trailing digit in the name; the main mechanical operations units are filed in other ranges; physics apparatus is filed here; and the listing does not say whether pump and turbine records are working test sets or demonstration models.
This meter is utilized uncommonly formeasuring stream of water inshallow streams, irrigationchannels and minors where thevelocity and profundity of water is deficient for obtainingmeasurements with expansive meters. This compose is of a little sizewith a solitary insurgency contact box. The meter is extremelysensitive to low speed. Embellishments incorporate wadding rodone meter since quite a while ago graduated at interims with its base plate andclamp, earphone with important association. dry cellbattery, electric link fitted with clasps and fittings, duster,screw driver, forceps to modify wire, and oil stick. Dulycalibrated by Gov!. look into station and pressed in a wellpolished wooden box..
An exceptionally valuable and mainstream instrument for use in hydrauliclaboratories. Comprising of a pole pivoting in bearing settled toa stationery outline. The pole is parallel to the elementoperates a contact component and number of the operationsare additionally enrolled by an electric tallying machine. Thecurrent meter is precisely aligned and is finished in apolished wooden kid with following extras. I) A lightcase involving an electric counter, push catch, dry celland protected interfacing wires. Ii) Stainless steel swimming bar with stand, one meter long intwo areas, graduated at each 10 cm..
In five figures, working with dry cell battery fitted withnecessary association having on and 01 switch. In a steelbox, appropriate for a water momentum meter. 388.
This is a standard container write current meter, appropriately aligned by Govt. examine station furnished with rating graph. It is a solid & inconvenience free instrument 391 legitimately housed in a wooden box with following accessories:(I) Yoke with container wheel assembly.(iI) Magnetic contact Chamber.(Iii) Proximity switch fixed in a metal nook, formedon the chamber plate.(Iv) Tail blade with check nut and adjust weight.(V) Two center electric cabel, 10 meter long. Vi) 10 meter suspension aroused steel wire rope, of About 3mm dia, with hanging course of action at bothends.(vii) Cast press angle weight of close around 10 kg. in weight and chrome covered M.S. tie bar with gaps, are pressed separate In wooden box.(viii) Tools: Screw Driver, Spanner, Oil can, Forceps, endDuster(ix) To record the quantity of unrests of the container wheel a programmed electromagnetic (non resettable)digit counters provided in box with streak light, switch and battery box.(B) With an electronic clock which is associated with the circuit of the programmed counter. The clock stopsrecording 3 following 40,60, or 80 seconds as wanted..
This is a standard glass write currentmeter, properly aligned by Govt. researchstation gave rating outline. It is areliable & inconvenience free instrument 391properly housed in a wooden box withfollowing embellishments: (I) Yoke with glass wheel get together. (iI) Magnetic contact Chamber. (Iii) Proximity switch fixed in a metal fenced in area, formedon the chamber plate. (Iv) Tail balance with check nut and adjust weight. (V) Two center electric cabel, 10 meter long. (Vi) 10 meter suspension stirred steel wire rope, ofAbout 3mm dia, with hanging course of action at bothends. (vii) Cast press angle weight of close around 10 kg. in weightand chrome covered M.S. tie bar with openings, are packedseparate In wooden box. (viii) Tools: Screw Driver, Spanner, Oil can, Forceps, endDuster (ix) To record the quantity of upsets of the glass wheel anautomatic electromagnetic (non resettable) 5 digitcounters provided in box with streak light, switch andbattery box. (B) With an electronic clock which is associated with thecircuit of the programmed counter. The clock stopsrecording 3 following 40,60, or 80 seconds as wanted. Butwilhout Govt. Research Station Ratingchart. With working directions
It is exceptionally delicate accuracy instrument which Is a logical guide to be introduced at measuring locales on trench frameworks to control release for retticient administration. It can likewise record of esteeming levels of supplies, wells, streams, and waterways etc.A drifting item, in secured area, is lifted or brought down consistently by shifting level. This here and there development of the buoy can be transmitted to a pulley through a buoy line running over it and having a stabilizer to encourage development of the pulley. The round development of the Pulley rises to the vertical development of the buoy can be transmitted to an outline drum straightforwardly. Aclock driven pen moving crosswise over thechart drum at consistent speed at right edges to the course of the rakish development, constantly records the adjustment in water level time.(a) Daily type(b) Weekly compose.
18' feet long in three pieces G.I. Pipe 3/4" measurement 6 ft longeach piece collapsing type gentle steel outline, with operationhandle. Without bottle..
18' feet long in three pieces G.I. Pipe 3/4" breadth 6 ft longeach piece collapsing type mellow steel outline, with operationhandle. Without bottle..
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