How to Choose the Right Conveyor Belt
How to Choose the Right Conveyor Belt
Selecting the wrong conveyor belt causes premature failure, unplanned downtime, and wasted money. Selecting the right belt means matching the belt material, cover type, carcass construction, and surface texture to your specific conveyor configuration and the material being conveyed. This guide walks through the decision in seven steps, from the most basic question (what are you conveying?) to the final specification details.
If you already know what belt you need, go directly to our quote form or call 888-203-2358. If you are not sure, work through the steps below or call us with your application details and we will recommend the right belt.
1 What Are You Conveying?
The material on the belt determines most of the specification. Different materials require different belt compounds, surface textures, and construction.
| Material Type | Examples | Key Belt Requirements |
|---|---|---|
| Packages and cartons | Cardboard boxes, poly mailers, totes, bins | Smooth surface, non-marking, anti-static, low noise |
| Food products | Meat, poultry, produce, bakery, dairy, confectionery | FDA approved, oil resistant, easy to clean, detectable options |
| Bulk granular | Grain, sand, gravel, fertilizer, coal, cement | Abrasion resistant, high tensile, troughing capable, anti-static if combustible dust |
| Metal parts and scrap | Stampings, castings, scrap metal, glass cullet | Cut and gouge resistant (urethane), oil resistant |
| Hot material | Hot asphalt, clinker, ash, freshly extruded plastic or rubber | Heat resistant compound rated for the actual temperature |
| Wet or oily material | Wet produce, oily grain, seafood, chemical products | Oil resistant (MOR, neoprene, nitrile), moisture resistant carcass |
| Sharp or abrasive material | Crushed rock, broken concrete, glass, recycling waste | Cut resistant, impact rated, rip-stop carcass, thick top cover |
| Lightweight items | Envelopes, paper, plastic bags, small electronics | Anti-static, textured surface for grip, non-marking |
2 What Is Your Conveyor Configuration?
The conveyor's physical design determines whether you need COS, CBS, or FBS construction, and what carcass thickness is appropriate.
| Conveyor Type | Description | Belt Construction |
|---|---|---|
| Slider bed | Belt slides on a flat metal plate. The most common type for light to medium duty. | COS (Cover One Side) or FBS (Friction Both Sides). Smooth or bare bottom reduces friction against the bed. |
| Live roller | Belt wraps around powered rollers. Common in accumulation and merge zones. | CBS (Cover Both Sides). Bottom must grip the rollers. COS will slip. |
| Troughed idler | Belt forms a U-shape across angled idler rollers. Used for bulk material. | Flexible rubber belt that can trough. Multi-ply construction. CBS not required (idlers support, not drive). |
| Knife edge transfer | Narrow-nose transfer between conveyors. Very small end roller diameter. | Thin, flexible belt. Monofilament carcass. Must wrap a small nose roller without cracking. |
| Incline / decline | Belt moves material up or down a slope. | Textured top surface matched to the incline angle. See Step 4. |
| Bucket elevator | Vertical lift with bolted-on buckets. | CBS with bolt holes. Anti-static for grain. Fire retardant for coal. |
3 Choose the Belt Material
Belt material is the compound that makes up the covers (top and bottom surfaces) and determines chemical resistance, temperature limits, and durability.
| Belt Material | Temperature Range | Best For | Limitations |
|---|---|---|---|
| SBR rubber | -20F to 180F | General purpose, bulk material, abrasion resistance, impact absorption | Degrades in oil. Not for food contact without FDA compound. |
| PVC | 0F to 160F | Package handling, food (FDA grades), light to medium duty, versatile | Softens in heat. Degrades in some oils. Not for heavy bulk material. |
| Neoprene | -20F to 200F | Oil, grease, and chemical exposure. Agricultural, food with animal fats. | Higher cost than SBR. Not as abrasion resistant as SBR in heavy-duty applications. |
| Nitrile (NBR/RAV) | -10F to 200F | Animal, vegetable, and mineral oil. Meat, poultry, oily food products. | Specialty compound. Higher cost. Less abrasion resistant than SBR. |
| Urethane | -10F to 160F | Metal stamping, glass, recycling. Cut and gouge resistant. Oil resistant. | Not for continuous high heat. Higher cost per belt. |
| PTFE (Teflon) | -100F to 500F | Bakery, high heat, non-stick release, drying ovens | Expensive. Not abrasion resistant. Not for heavy loads. |
| Silicone | -75F to 500F | Extreme heat, extreme cold, non-stick, food grade | Expensive. Low abrasion resistance. Niche applications only. |
| Heat resistant rubber | -20F to 350F (std) / 700F (max) | Ash, clinker, hot asphalt, foundry, kiln discharge | Specialty compound, higher cost. Standard heat resistant differs from maximum high temp. |
4 Is the Conveyor Inclined?
If the conveyor runs at an angle, the belt's top surface must provide enough grip to prevent material from sliding backward. The steeper the angle, the more aggressive the surface texture required.
| Incline Angle | Recommended Surface | Belt Type |
|---|---|---|
| 0 to 10 degrees | Smooth or lightly textured (crescent, pebble top) | Standard general purpose |
| 10 to 20 degrees | Rough top | Rough top rubber or PVC |
| 20 to 35 degrees | Diamond top / wedgegrip / steepgrade | High-friction incline belts |
| 35 to 45 degrees | Cleated (V-cleat, chevron, lug cleat) | Cleated rubber belts. Cleat height matched to material size. |
| 45 to 90 degrees | Corrugated sidewall with T-cleats or bucket profiles | Custom sidewall belting. Sidewalls from 1" to 16". |
For the complete incline belt guide, see our Incline/Decline Belting page.
5 Choose the Carcass
The carcass is the internal reinforcement that gives the belt its tensile strength, tracking stability, and load-carrying capacity. Heavier loads and longer conveyors need stronger carcasses.
| Carcass Type | Typical Use | Key Properties |
|---|---|---|
| 2-ply polyester | Light to medium duty. Package handling, food processing, general manufacturing. | Flexible, low stretch, good tracking. Adequate tensile for conveyors under 200 feet. |
| 3-ply polyester | Medium to heavy duty. Heavier loads, longer conveyors. | Higher tensile than 2-ply. Good for conveyors 100 to 400 feet. |
| Interwoven polyester | General purpose PVC belts. Warehouse, manufacturing, food. | Tight weave resists fraying. Low stretch. Good lace retention. Very popular carcass for PVC belts. |
| Monofilament | Wet environments, food processing, small pulley diameter. | Cross-rigid. Does not absorb moisture. Thin, flexible, wraps small pulleys. Ideal for knife edge transfers. |
| Straight warp | Heavy duty, long distance, mining, aggregate, bulk material. | Single ply, straight-running warp yarns. Low stretch, high tensile, excellent troughing. Rip-stop construction. |
| Nylon/polyester (EP) | Heavy duty, high impact, mining. Longest conveyor runs. | Highest tensile and impact resistance. High-PIW ratings for conveyors over 500 feet. |
6 Check for Special Requirements
Many applications have requirements beyond basic material and construction. Check each of these against your application:
| Requirement | When It Applies | What to Specify |
|---|---|---|
| FDA / food grade | Any belt that contacts food intended for human consumption | FDA 21 CFR compliant belt compound. See Food Grade Belting. |
| Fire retardant | Enclosed conveyors handling combustible material (coal, grain, wood dust, waste). Insurance or code requirement. | FR rated compound. MSHA approved for mining. Self-extinguishing. |
| Anti-static | Combustible dust environments (grain, coal, wood dust, some chemicals). Electronics handling. | Anti-static compound that continuously dissipates electrical charge. Under 300 megohms per OSHA. |
| Oil resistant | Petroleum products, oily food, cutting fluid, hydraulic oil exposure | MOR, neoprene, nitrile (RAV), or OGHR compound depending on oil type and concentration. |
| Chemical resistant | Acids, alkalis, solvents, bleach, fertilizer, cleaning chemicals | Chemical resistant compound matched to the specific chemicals. Neoprene, nitrile, or specialty PVC. |
| Non-marking | Finished products, retail packaging, paper, light-colored items | White or light-colored PVC. Non-marking rubber compound. Urethane (naturally non-marking). |
| Metal detectable | Food processing with HACCP metal detection requirements | Detectable belt compound that registers on metal detectors and X-ray systems if a piece chips off. |
| Weather / UV resistant | Outdoor conveyors exposed to sun, rain, temperature extremes | Weather resistant rubber with UV stabilizers and ozone resistance. |
7 Specify Dimensions and Fabrication
Once you have determined the belt type, material, and construction, specify the physical dimensions and any fabrication requirements:
- Width: Match to your conveyor frame width. Standard belts are typically 1" to 2" narrower than the frame to allow clearance.
- Length: Measure the belt path (around both pulleys) or provide the conveyor center distance and pulley diameters so we can calculate.
- Splice type: Mechanical lacing (Clipper, Alligator, plate) for easy field installation and future removal. Vulcanized finger splice for a smoother, stronger, permanent joint. See our Splicing Guide.
- Endless: Factory-spliced into a continuous loop. Requires exact belt length. No field splice needed.
- Bolt holes: For bucket elevator belts. Specify hole pattern, spacing, and bucket manufacturer.
- Cleats and sidewalls: Specify cleat height, profile (I, T, lug, chevron), spacing, and sidewall height if applicable.
Quick Selection Summary
If you need a fast answer, here are the most common conveyor belt selections by application:
| Application | Belt |
|---|---|
| Package handling, warehouse, sorting | PVC COS, interwoven polyester carcass, anti-static |
| Food processing (general) | FDA PVC or nitrile (RAV), monofilament carcass, oil resistant |
| Bakery, high heat food | PTFE (Teflon) or silicone |
| Bulk aggregate, mining, coal | Heavy-duty rubber, multi-ply or straight warp, abrasion resistant |
| Metal stamping, glass, scrap | Urethane (R900/R1200), cut resistant, oil resistant |
| Incline 10 to 25 degrees | Rough top rubber or PVC |
| Incline 25+ degrees | Diamond top, chevron, or cleated |
| Grain bucket elevator | PVC CBS, anti-static, bolt holes punched |
| Live roller conveyor | PVC or rubber CBS (Cover Both Sides) |
| Outdoor long-distance bulk | Heavy-duty rubber, weather resistant, high PIW |
Frequently Asked Questions
PVC COS (Cover One Side) on a slider bed is the single most common conveyor belt configuration across all industries. It handles package handling, light manufacturing, food processing, and general material transport. For bulk material (mining, aggregate, grain), heavy-duty multi-ply rubber is the standard.
COS (Cover One Side) has a smooth cover on top and bare fabric on the bottom. Used on slider bed conveyors. CBS (Cover Both Sides) has smooth covers on top and bottom. Required for live roller conveyors and bucket elevators where the bottom must grip rollers. FBS (Friction Both Sides) has fabric texture on both sides. Used on slider beds where lower bed friction is beneficial.
Rubber is better for heavy loads, bulk material, abrasion, impact, and outdoor/weather exposure. PVC is better for package handling, food (FDA grades), light to medium duty, and indoor environments. PVC is also inherently fire retardant and comes in a wider variety of colors. For oily environments, neoprene or nitrile (neither rubber nor PVC) may be the best choice.
PIW stands for pounds per inch of width and measures the belt's tensile strength. Higher PIW means the belt can carry heavier loads over longer distances without stretching or failing. Light-duty applications may need only 100 to 150 PIW. Heavy-duty mining and bulk material conveyors often require 330 to 600+ PIW. PIW is determined by the carcass construction (number of plies, fabric type).
If the belt directly contacts food intended for human consumption, yes. FDA 21 CFR compliance is required for belts on processing lines, sorting tables, packaging conveyors, and any other surface that touches food. Belts that only handle packaged food (sealed cartons, cans) do not require FDA approval. See our Food Grade Belting page.
The more information you provide, the faster and more accurate the quote: what you are conveying (material type, weight, temperature), conveyor configuration (slider bed or roller, flat or inclined, belt width and length), any special requirements (FDA, anti-static, fire retardant, oil resistant), and the old belt part number or a photo if replacing an existing belt. If you only have some of this information, call us and we will work through it together.
Yes. Belt selection is what we do every day. Call 888-203-2358 with your application details or submit through our quote form. We will recommend the correct belt material, cover type, carcass, surface texture, and fabrication for your specific conveyor and application.
Related Pages
Need Help Selecting a Conveyor Belt?
Texas Belting selects conveyor belts for maintenance teams and engineers every day. Tell us your application and conveyor specs and we will recommend the right belt.
Get a Recommendation Call 888-203-2358