Conveyor belts
Rubber Conveyor Belts: M-24, N-17 & Heat-Resistant Grades
Our rubber conveyor belts combine fabric plies with tough rubber covers for bulk handling in mining, power, cement, sugar and process plants, supplied in the grade, ply count and size your conveyor needs.
- 3, 4 & 5 ply
- Widths up to 2 m
- M-24, N-17, HR & SHR
Rubber Conveyor Belt Grades Explained
A rubber conveyor belt has a fabric carcass of one or more plies, usually nylon-nylon (N/N) or polyester-nylon (EP), protected by a top (carrying) cover and a bottom cover. The carcass carries the tension. The covers take the wear, heat and chemical attack.
M-24: heavy-duty abrasion resistance
M-24 covers are compounded for sharp, abrasive and heavy material such as iron ore, sponge iron, coal, crushed stone and jaw crusher discharge. They suit medium to heavy duty at normal material temperatures up to about 70 °C.
N-17: general and medium duty
N-17 covers suit less abrasive bulk material in power plants, paper mills, sugar mills and cattle or fish feed plants, again for material below about 70 °C.
Special grades
Heat-resistant (HR, SHR), oil- and chemical-resistant, flame-retardant and rough-top covers are available where standard grades would fail early. M-24 and N-17 are cover grades defined in IS 1891 (Part 1).
Models we supply
Standard and Heavy-Duty Rubber Belts
Multi-ply belts for bulk material handling. Sizes below are typical; we supply to your width and length.
4-Ply 10 mm M-24 Rubber Belt
A heavy-duty M-24 belt for abrasive bulk such as ore, coal and crushed stone. It is the most common choice for mining and crushing conveyors.
| Belt width | Up to 2000 mm |
|---|---|
| Thickness | 10 mm |
| Plies | 4 |
| Belt rating | 400 N/mm |
| Working temperature | Up to 80 °C |
| Length | Up to 400 m |
4-Ply 12 mm M-24 Rubber Belt
Thicker covers for longer life under heavy, sharp material and high-impact loading points.
| Belt width | 800 mm |
|---|---|
| Thickness | 12 mm |
| Plies | 4 |
| Cover grade | M-24 |
4/5-Ply Heavy-Duty Rubber Belt
Higher-rated belts for longer centres and heavier loads, in standard widths.
| Belt width | 630, 800 or 1000 mm |
|---|---|
| Plies | 4 or 5 |
| Thickness | 10–17 mm |
| Belt rating | 400 N/mm |
3-Ply N-17 Rubber Belt
A general-duty belt for less abrasive bulk in power plants, sugar mills, paper mills and feed plants.
| Belt width | 1000 mm |
|---|---|
| Thickness | 7 mm |
| Plies | 3 |
| Cover grade | N-17 |
650 mm Flame-Retardant Rubber Belt
A lighter rubber belt with flame-retardant covers for plants where fire risk must be reduced.
| Belt width | 650 mm |
|---|---|
| Thickness | 5 mm |
| Belt rating | 120 N/mm |
| Working temperature | -10 to 75 °C |
Narrow Black Rubber Belt
A narrow rubber belt for small conveyors, feeders and machine transfers.
| Belt width | 50 mm |
|---|---|
| Belt rating | 315 N/mm |
| Length | 50 m |
Models we supply
Special-Purpose Rubber Belts
Belts with covers or profiles for heat, chemicals, grip or a specific machine.
Heat-Resistant (HR/SHR) Rubber Belt
Heat-resistant covers for hot clinker, sinter, castings and similar material. The SHR grade suits material at around 160 °C, with a maximum of 180 °C.
| Belt width | 500–1000 mm |
|---|---|
| Thickness | 11–15 mm |
| Operating temperature | 160 °C (180 °C max, SHR) |
| Hardness | 65 ± 5 Shore A |
| Weight | 12 kg/m² |
| Length | Up to 400 m |
Oil and Chemical-Resistant Belt
Nitrile-based covers resist swelling and softening from oils, fats, waxes, solvents and many industrial chemicals. Typical loads include oil cake, soya meal, feeds, soap and fertiliser.
| Belt width | 1050 mm |
|---|---|
| Thickness | 10 mm |
| Cover tensile strength | 15 MPa |
| Working temperature | Up to 80 °C |
Rough Top Rubber Belt
A textured top cover that grips cartons, bags and parcels on inclines and declines, and cushions the load.
| Belt width | 1000 mm |
|---|---|
| Thickness | 10 mm |
| Cover tensile strength | 15 MPa |
Magnetic Separator Belt
A cleated belt for overbelt magnets. The magnet lifts tramp iron from the product stream, and the cleats carry it out of the magnetic field to a collection point, protecting crushers and improving product quality.
| Belt width | 650 mm |
|---|---|
| Thickness | 8 mm |
| Belt rating | 200 N/mm |
| Uses | Coal, cement, glass and tyre recycling |
Coloured Rubber Belt
Rubber belts with coloured covers for sugar, chemical, food and pharmaceutical plants. Specify a food-grade compound wherever the belt touches the product.
| Belt width | 1200 mm |
|---|---|
| Thickness | 8 mm |
| Cover tensile strength | 15 MPa |
Potato Grader Belt
A rubber belt for potato grading and sorting machines. Width and profile are matched to your grader.
| Belt width | 500–1000 mm |
|---|---|
| Material | Rubber |
How to Choose the Right Rubber Belt
Match the cover grade to the material and the carcass to the conveyor.
| If your conveyor handles… | Choose | Why |
|---|---|---|
| Sharp, heavy, abrasive bulk (ore, stone, coal) | M-24 cover, 4–5 ply | Best cut and abrasion resistance |
| Moderate bulk (grain, feed, ash, paper waste) | N-17 cover, 3–4 ply | Economical for general duty |
| Material above about 80 °C | HR or SHR grade | Standard covers harden and crack with heat |
| Oily, fatty or chemical material | Oil/chemical-resistant cover | Prevents swelling and softening |
| Bags and cartons on an incline | Rough top belt | Extra grip without cleats |
| Loose bulk on an incline | Chevron belt | Moulded cleats stop roll-back |
Get an accurate quote
What to Send Us for a Rubber Belt Quote
Include as many of these as you can. A photo of the old belt and its markings helps.
- Belt type or the material you are conveying (lump size, bulk density, abrasiveness)
- Belt width and required length, or the conveyor centre distance
- Thickness, number of plies and cover grade if you already know them
- Material temperature and any oil, chemical or food-contact requirement
- Incline angle and required capacity (t/h or units per hour)
- Joint type: endless (vulcanised) or open-ended for mechanical fasteners
- Photos or a drawing of the existing belt or conveyor, if you are replacing one
Talk to a conveyor specialist
Send your requirement, get a clear answer
Share a photo, sketch or a few numbers. We reply within one working day.
- Call+91 93640 87778
- WhatsAppChat with us
- Emailcontact@ekaconveyors.com
Where Our Rubber Conveyor Belts Are Used
Rubber belts carry most of the bulk material moved in Indian industry.
FAQs
Frequently Asked Questions
Quick answers about rubber conveyor belt.
What does M-24 mean on a rubber conveyor belt?
M-24 is a cover grade for abrasive, heavy-duty service. It is the usual choice for ore, coal, crushed stone and similar sharp materials at normal temperatures.
How many plies does my rubber belt need?
It depends on the belt tension, which comes from conveyor length, lift, load and drive power. Short, lightly loaded conveyors often run on 3 ply, while longer or heavier ones need 4 or 5 ply. Send us your conveyor details and we will check it.
What is the difference between N/N and EP belts?
N/N belts use nylon in both directions and are flexible with good impact resistance. EP belts use polyester lengthwise and nylon crosswise, so they stretch less and suit longer conveyors with less take-up travel.
How thick should the top cover be?
Thicker top covers last longer under abrasive, lumpy material and heavy impact at the loading point. Fine or light material can run on thinner covers. The overall belt thickness we quote includes the carcass and both covers.
Why is my rubber belt cracking or hardening?
Surface cracking and hardening are usually caused by material that is hotter than the cover grade allows, or by exposure to oil or chemicals. Switching to a heat-resistant or oil-resistant grade normally solves it.
Can rubber belts be supplied in long lengths?
Yes. Belts can be supplied in lengths up to 400 m, depending on width and construction. Longer conveyors are joined on site.
Which rubber belt should I use for an overbelt magnet?
Use a cleated magnetic separator belt sized to the magnet. The cleats carry captured tramp iron out of the magnetic field so it drops into a collection bin instead of sticking to the belt.
Next step
Get the Right Rubber Belt Grade for Your Conveyor
Tell us what you convey, the belt size and the temperature. We will recommend a grade and ply count and send a quote.
Real people, real answers. We reply within one working day.