Elevator Conveyor Belt
Bucket elevator belts are the vertical backbone of grain handling, aggregate processing, mining, food production, and bulk material operations. Unlike standard conveyor belts, elevator belts carry attached buckets that scoop material at the boot and discharge it at the head, lifting product vertically through enclosed legs. This demands CBS (Cover Both Sides) construction with precisely punched bolt holes, high tensile carcass to support heavy bucket loads, and compounds matched to the material being elevated.
Texas Belting fabricates custom elevator belts at our Houston facility. Every belt is cut to your exact width and length, punched to your bucket bolt pattern, and spliced to your specification. We stock SBR, MOR, PVC, fire retardant, anti-static, and FDA white nitrile compounds in 2-ply through 6-ply constructions. Call 888-203-2358 with your elevator specs.
Elevator Belt Resources
What Is a Bucket Elevator Belt?
A bucket elevator belt is a continuous loop of belting with bolted-on buckets that lifts bulk material vertically inside an enclosed casing (called a "leg"). The belt wraps around a head pulley at the top and a boot pulley at the bottom. Buckets scoop material from a hopper at the boot, carry it up the ascending side, and discharge it over the head pulley into a chute, bin, or process.
Elevator belts use CBS (Cover Both Sides) construction. Unlike standard conveyor belts where only the top cover contacts material, elevator belts need rubber or PVC covering on both the carrying side (where buckets are bolted) and the pulley side. The carrying-side cover protects the carcass from bucket bolt stress and material spillage. The pulley-side cover protects against pulley wear and provides traction on the drive pulley.
Bolt holes are punched through the belt at precise intervals to match the bucket manufacturer's bolt pattern and spacing. Texas Belting punches holes for all bucket manufacturers and configurations, including centered and staggered layouts with 9 standard patterns (P1 through P9) plus custom patterns.
Elevator Belt Types
| Belt Type | Construction | Best For |
|---|---|---|
| Multi-ply rubber CBS | 2 to 6-ply polyester/nylon carcass with rubber covers on both sides. 150 to 600+ PIW. Browse SBR elevator specs and oil/heat/FR elevator specs. | The standard for most bucket elevators. Grain, aggregate, mining, cement, fertilizer, coal, sand, and general bulk material. |
| PVC CBS | 2 to 3-ply polyester carcass with PVC covers on both sides. Lower cost than rubber. | Light to medium duty grain elevators, feed mills, seed handling, dry bulk materials. Good chemical and moisture resistance. |
| FDA white nitrile CBS | Multi-ply carcass with white nitrile covers meeting FDA 21 CFR requirements. | Food-contact elevator applications: sugar, flour, rice, cereal, pet food, and other edible bulk materials. |
| Fire retardant / anti-static CBS | Multi-ply with FR compound that self-extinguishes. Anti-static (SC) compound under 300 megohms. Example: PN 10476 (3-ply 330 PIW FR/SC). | MSHA-regulated grain elevators. OSHA-compliant grain handling where combustible dust is present. Coal handling. |
| Corrugated sidewall | Cross-rigid (CR-MOR) base belt with corrugated sidewalls (1" to 16") and T-cleats. | Steep-angle to vertical conveying of aggregate, sand, grain, and bulk materials without buckets. Alternative to bucket systems on shorter lifts. |
Elevator Belt Compound Guide
| Compound | Temperature | Best For |
|---|---|---|
| SBR (Standard) | -25F to 225F | General purpose. Grain, aggregate, sand, fertilizer, cement. Abrasion and mildew resistant. Example: PN 10472 (2-ply 225 PIW SBR), PN 10484 (3-ply 330 PIW SBR). |
| MOR (Oil Resistant) | -20F to 180F | Oily grain, soybeans, canola, sunflower seeds. Resists swelling from vegetable and petroleum oils. |
| Nitrile | -20F to 225F | Heavy oil exposure. Petroleum coke, oilseed processing, oily industrial materials. |
| Fire Retardant (FR) | Standard range | Self-extinguishing compound. Required for MSHA-regulated grain elevators and enclosed coal handling. |
| Anti-Static (SC) | Standard range | Static-conductive compound under 300 megohms per OSHA. Required where combustible grain dust is present. |
| FR + SC (M-MOR-SC) | Standard range | Combined fire retardant and static conductive. The standard for OSHA-compliant grain elevators. Also oil resistant. Example: PN 10476 (3-ply 330 PIW FR/SC). |
| EPDM (Heat Resistant) | Up to 400F continuous | Hot materials: roofing granules, hot petroleum coke, fly ash, clinker. Resists heat hardening and cracking. |
| Neoprene (Flame Resistant) | Standard range | Flame resistant applications where neoprene is specified. Chemical resistance to oils and solvents. |
| PVC | -10F to 160F | Chemical and moisture resistant. Light to medium duty grain and feed handling. Lower cost alternative to rubber. |
| White Nitrile (FDA) | -20F to 225F | FDA-compliant food contact. Sugar, flour, rice, cereal, pet food, and other edible bulk materials. |
| Rough Top | Standard range | High-friction textured surface for applications where bucket scooping alone is insufficient and material needs extra grip. See Incline/Decline Belting. |
Ply Count and PIW Selection
| Ply Count | Typical PIW | Best For |
|---|---|---|
| 2-ply | 150 to 225 PIW | Light to medium duty. Short leg elevators handling grain, feed, seed, and light bulk materials. Example: PN 10472 (2-ply 225 PIW SBR). |
| 3-ply | 225 to 330 PIW | Medium to heavy duty. General grain elevators, aggregate, sand, fertilizer. The most common ply count. Examples: PN 10484 (3-ply 330 PIW SBR), PN 10476 (3-ply 330 PIW FR/SC), PN 10470 (3-ply 225 Tan Puregum). |
| 4-ply | 330 to 440 PIW | Heavy duty. Mining, large grain terminals, heavy aggregate, cement. Tall legs with heavy bucket loads. Browse all heavy-duty belt specs. |
| 5 to 6-ply | 440 to 600+ PIW | Maximum duty. Tall mining elevators, port terminal systems, heavy industrial. Maximum tensile for the longest legs and heaviest loads. Browse all heavy-duty belt specs. |
The correct ply count and PIW depend on leg height, bucket size and spacing, material weight, and belt speed. Texas Belting calculates the correct specification for your elevator. Call 888-203-2358 with your equipment specs.
Custom Bolt-Hole Punching
Every bucket elevator belt requires bolt holes punched to match the bucket manufacturer's bolt pattern and spacing. Texas Belting punches holes for all bucket manufacturers and configurations at our Houston facility.
| Configuration | Description | Best For |
|---|---|---|
| Centered | Bolt holes aligned in symmetric rows across the belt width. Dimensions: A (hole centers), B (row centers), C (bucket centers), F (edge to center of outside hole). | Standard bucket attachment on narrower belts. Simpler installation. Most common for grain and light industrial. |
| Staggered | Bolt holes offset between rows for stronger attachment. Adds dimension G (center to center of inside holes). | Stronger bucket attachment on wider belts. Heavy-duty mining and aggregate where bucket pull-out forces are high. |
We offer 9 standard hole patterns (P1/B1 through P9/B8) covering single-hole through eight-hole configurations. Custom patterns beyond these standards are available. Use our Elevator Belt Selection and Hole Punch Pattern Form to specify your exact requirements, or call with your bucket brand and bolt pattern.
Industries and Applications
| Industry | Material Elevated | Recommended Compound | Industry Page |
|---|---|---|---|
| Grain and agriculture | Wheat, corn, soybeans, rice, feed, seed, malt | M-MOR-SC (FR + anti-static + oil resistant). OSHA compliant. | Agriculture |
| Aggregate and quarry | Crushed stone, sand, gravel, cement, concrete | SBR abrasion resistant. Heavy cover. 3 to 4-ply. | Aggregate & Mining |
| Mining | Ore, coal, potash, salt, mineral concentrates | FR + anti-static for underground. SBR abrasion resistant for surface. | Aggregate & Mining |
| Food processing | Sugar, flour, rice, cereal, pet food, spices, nuts | White nitrile (FDA). Anti-static where dust is present. | Food Processing |
| Energy and power plants | Coal, fly ash, petroleum coke, biomass, wood pellets | FR + anti-static for coal. EPDM heat resistant for hot coke and ash. | Energy |
| Construction | Sand, gravel, roofing granules, asphalt aggregate | SBR or EPDM for hot granules. Abrasion resistant cover. | Construction |
| Recycling | Shredded material, glass cullet, compost, biomass | SBR or MOR. Abrasion and cut resistant. | Recycling & Waste |
| Bulk terminals | Grain, coal, fertilizer, minerals at port facilities | Heavy-duty SBR or FR. High PIW for tall legs. | Bulk Terminal |
Splice and End Preparation Options
| Splice Type | Description | Best For |
|---|---|---|
| Plate fasteners | Metal plate fasteners (Clipper, Alligator, bolt-plate) clamped across the belt ends. Fastest field installation. | Most bucket elevator installations. Easy to install and replace. Can be done in the field with basic tools. |
| Overlap splice | Belt ends overlapped and bolted or riveted together. Simple, durable, but adds a thicker joint. | Heavy-duty applications where joint thickness is not a concern. Mining and aggregate elevators. |
| Butt splice | Belt ends butted together with a connecting plate or hinge. Flush profile through the pulley. | Applications requiring a smooth, consistent belt profile through head and boot pulleys. |
| Factory endless | Belt spliced into a continuous loop at our Houston facility using vulcanized finger splice. | Maximum splice strength. Recommended when the belt can be installed as a loop without field splicing. |
For more detail on splice types, fastener selection, and installation methods, see our Conveyor Belt Splicing Guide.
Frequently Asked Questions
CBS stands for Cover Both Sides. Standard conveyor belts often have a bare (uncovered) pulley side, but elevator belts need rubber or PVC covering on both sides. The carrying side protects the carcass where bucket bolts penetrate the belt and material spills around the buckets. The pulley side provides traction on the drive pulley and protects against pulley wear. Without CBS construction, the exposed carcass fabric degrades rapidly from bolt stress, moisture, and abrasion.
Yes, if your facility handles grain and has combustible dust. OSHA requires belts with electrical resistance under 300 megohms in grain elevators where combustible dust is present. Static discharge from a non-conductive belt can ignite grain dust in the enclosed elevator leg, causing an explosion. The M-MOR-SC compound (fire retardant + static conductive + moderately oil resistant) meets OSHA requirements and is the standard for compliant grain elevator installations.
We offer 9 standard patterns (P1/B1 through P9/B8) in both centered and staggered bucket configurations. Patterns cover single-hole through eight-hole bolt layouts. Custom patterns beyond these standards are available for non-standard bucket spacing. Use our Hole Punch Pattern Form to submit your exact dimensions, or call 888-203-2358 with your bucket brand and bolt pattern specs.
Ply count depends on leg height, bucket size and spacing, material weight, and belt speed. 2-ply handles short legs with light materials. 3-ply is the most common for general grain and aggregate. 4-ply for tall legs and heavy loads. 5 to 6-ply for mining, port terminals, and the tallest, heaviest-duty installations. Texas Belting calculates the correct ply count and PIW for your specific elevator.
Yes. Provide us with the belt width, overall length, ply count, compound type, cover thickness, bucket bolt pattern, and bucket spacing. If you have a part number from the existing belt or the elevator manufacturer, that helps us match it exactly. If the belt markings are worn off, send us a photo and measurements and we will identify the correct replacement. Many standard elevator belt sizes are available same day from our Houston warehouse.
Yes. PVC CBS elevator belts are a lower-cost alternative to rubber for light to medium duty grain, feed, and dry bulk handling. PVC provides good chemical and moisture resistance but does not handle abrasive materials or high temperatures as well as rubber. PVC elevator belts are in stock at our Houston warehouse.
Centered bucket configuration aligns bolt holes in symmetric rows across the belt width. Staggered configuration offsets bolt holes between rows so no two holes are directly across from each other. Staggered patterns provide stronger bucket attachment because the load is distributed more evenly across the belt carcass. Staggered is recommended for wider belts and heavy-duty applications where bucket pull-out forces are high.
Yes. EPDM compound handles continuous temperatures up to 400F and is the standard for hot petroleum coke, roofing granules, fly ash, and clinker elevator applications. For the highest temperatures, our Maximum HT compound handles up to 700F for lumps. Specify your material temperature when requesting a quote and we will match the correct heat-resistant compound.
Related Pages
Need a Custom Elevator Belt?
Texas Belting fabricates elevator belts at our Houston facility. Cut to width, built to length, punched to your bucket bolt pattern, and spliced to your specification. Many standard sizes ship same day.
Hole Punch Pattern Form Call 888-203-2358