How to select bucket elevator belts: tensile strength, oil, heat and abrasion grades, fire-resistant antistatic belts (ISO 340/284) and food grades.
The belt is the backbone of a bucket elevator. It carries the buckets, transmits the drive power and must survive the material, temperature and environment of the plant. A belt that is wrongly specified can stretch, swell, crack or burn — and an elevator stopped for a belt replacement means a plant that is not producing.
Most elevator belts use a textile carcass (typically polyester/polyamide plies). For tall, high-capacity elevators — such as large cement or clinker elevators — steel-reinforced constructions like a steel web belt offer very high strength with minimal stretch. Low elongation is important in elevators because the take-up travel is limited.
| Requirement | Belt type |
|---|---|
| Oily materials (oilseeds, feed with fat, some grains) | NBR oil-resistant belt |
| Abrasive materials (sand, aggregates, minerals) | SBR abrasion-resistant belt |
| Hot materials (cement, clinker, hot meal) | T150 high-heat belt or the very-high-temperature version |
| Combustible dust, ATEX zones | Fire-resistant, antistatic belt (ISO 340 / ISO 284) |
| Food and feed contact | FDA-compliant NBR belt or FDA fire-resistant belt |
In grain, feed, flour, sugar and many chemical plants, the elevator handles combustible dust. A belt that can carry an electrostatic charge or sustain a flame is an unnecessary risk. Belts tested for flame resistance (ISO 340) and electrical conductivity (ISO 284) reduce that risk and are commonly required by insurers and in ATEX-classified installations. They complement — but do not replace — hazard monitoring of the elevator.
Many agricultural products contain oils that slowly penetrate standard rubber, causing the belt to swell, soften and lose bolt grip. If the material contains oil — soybeans, rapeseed, sunflower, fishmeal, some feeds — specify an oil-resistant cover from the start.
For food contact, choose belts with documented compliance for food contact (for example FDA-compliant compounds) and ask for the supplier’s declaration. White or light-coloured covers also make cleaning and inspection easier.
Elevator belts are usually joined with mechanical splices rather than vulcanised joints, so the belt can be installed and shortened inside the casing. Use a splice rated for the belt tension, such as Supergrip or Gripwell splices. Our maintenance article on splices and bolts explains the details.
Browse our elevator belts (4B products) or request a quote with these details.
ISO 340 is a flame resistance test for conveyor belts. Belts that pass it are less likely to sustain a fire, which is important where combustible dust is handled.
Oils in products such as oilseeds and some feeds penetrate standard rubber, causing swelling, softening and loss of bolt grip. Oil-resistant NBR covers prevent this.
Mechanical splices are standard in bucket elevators because they can be installed inside the casing and allow the belt to be shortened as it stretches.
Elevator BeltsNBR Nitrile provides good resistance to oil and fat. Suitable for products containing oils and fat up to 100˚C.
Elevator Belts4B elevator belting is of laminar construction, to give high impact resistance coupled with low stretch at working tension. The EP carcass comprises a woven textile construction having low stretch polyester fabric…
Elevator BeltsRecommended for use in equipment/installations where there is a risk of fire or explosion. Suitable for handling cereals and products with moderate levels of oil, such as soya.
Elevator BeltsSuitable for applications in elevators handling products of up to 150˚C and short peaks of 180˚C. Used in the cement, coal, dry chemicals, fly ash industries. Use special 3+3 covers to prevent…
Elevator BeltsNBR, FDA White Food Quality belts are designed for use in the food industry. This belt quality has very good oil and fat resistance and meets the requirements for components in contact…
Elevator Belts4B's STEEL WEB belt is a rubber elevator belt with a special steel cord core. The cords provide low elongation with high elasticity in the length, and cross rigidity in the width.…
Need a different size, standard or quantity? Request a quote
Our team can help you specify, source and compare products for your project.
What H07RN-F means, where the rubber flexible cable can be used, how it differs from H05RN-F and H07RN8-F, and what to check before ordering for EU…
Read More — H07RN-F Rubber Cable: A Buyer’s Guide for European Projects
CPR for cables explained: EN 50575, Euroclasses Aca to Fca, smoke, droplet and acidity classes, and the Declaration of Performance.
Read More — CPR Cable Classes Explained: EN 50575, Euroclasses and What Your Project Needs
How to choose bucket elevator buckets: steel, polyethylene, nylon and polyurethane, DIN 15233 and DIN 15232 shapes, capacity and spacing.
Read More — How to Choose Elevator Buckets: Materials, Shapes and DIN StandardsShare your specifications and quantities. Our team will review your request and come back with sourcing options and a quotation.