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Coated belt pulleys

For optimum static friction, we offer an additional friction coating of the belt pulleys with rubber, silicone or polyurethane. These drive elements are mainly used as head pulleys for bucket elevators or in transport system construction. From 500 mm rim width, the belt pulleys are equipped with a double arm cross or double plate. This increases stability and performance. For crown widths above 750 mm, several pulleys can also be combined on one shaft, which together can be spherical or crowned.

The rubber coating is also used in the food industry, in accordance with FDA and BfR specifications and with the appropriate colouring (white, blue, pink, etc.).

Downloads

Grid and belt pulleys(1215 KB)

Accessories

Black roughened surface: Oil and grease resistant, vulcanised or bonded on request. High temperature resistance.

White roughened surface rubber coating for use in the food industry. Conforms to FDA and BfR specifications.

Galvanically nickel-plated and white rubberised special version with guide groove for use in the food industry.

At a glance

Features

Special production according to customers individual specifications or drawings
Standard for peripheral speeds up to 42 m/s
Maximum pulley diameter 2,500 mm
Maximum pulley weight approx. 6,000 kg

Flexible moulding process | Fast delivery

Individual model setups are not required – there are no model costs!
Change requests or adaptations can be accommodated without costs
Wheel crowned according to DIN 111 or camber height according to requirement
Common versions available from stock
Short term production and delivery possible

Materials

Standard: Cast iron with lamellar graphite EN-GJL-200 to EN-GJL-300 (GG-20 to GG-30), DIN EN 1561
Alternative: Nodular cast iron (EN-GJS-400 to EN-GJS-700), cast steel (GS) or welded steel design

Shaft-hub connection

Cylindrical bore, with and without keyway
Prepared for couplings, flanges, clamping sets or TaperLock bushings

Possible designs

Arm, plate or solid pulley
Reinforced versions for higher belt speeds

Balancing standards

Standard according to DIN 21940-11 in quality grade G16
Available in quality grades G6.3 or G2.5 on request

Surface treatment

Primed / black oxide finish as standard
Standard rubber coating in diamond shape, hardness 60-65 Shore, material thickness 10 mm
Black rubber coating also available in oil and grease resistant version
White rubber lining for the food industry is FDA / BfR compliant
Individual surface treatment and special painting possible

Why Lütgert?

Flexible moulding process without individual models and without model cost

Special designs according to individual customer specifications or drawings

Pulley geometry optimally adapted to the respective drive situation

Individual design, control, recalculation and optimization of your drive

Customised processing (drilling, grooving, surface) acc. to customer specifications

Ideal for prototypes, as well as individual or series parts

Full transparency through creation of released drawings

Documentation of residual imbalances and surface treatments

Documentation to prove material properties, balancing grades and surface treatments

Extensive stock and short-term availability of urgent spare parts

Frequently Asked Questions (FAQ)

What are the benefits of coating the belt drums in the operation of bucket elevators?

The coating increases the friction between the belt drum and the conveyor belt, thereby ensuring a secure grip. This reduces slippage, stabilises the drive power and guarantees reliable continuous operation, even under varying loads.

What coating materials are available for belt drums?

Depending on the application, belt drums can be coated with rubber, silicone or polyurethane. The choice of material depends on factors such as temperature range, abrasion resistance, chemical resistance and the requirements of the food industry.

Are coated belt drums suitable for use in the food industry?

Yes, special coatings can be applied in accordance with FDA and BfR guidelines. Hygienic colour options (e.g. white) and food-grade materials are available, which are suitable for use in milling, animal feed and food processing plants.

How does the coating affect wear and maintenance?

The coating reduces belt wear by ensuring even force transmission and minimising the tendency for slippage. At the same time, it extends the service life of the belt drum and allows maintenance intervals to be lengthened, particularly in 24/7 operation.

What are the typical operating conditions for coated belt drums?

Typical applications include bucket elevators and conveyor systems for bulk materials, particularly for cereals, animal feed, minerals or industrial bulk materials, where long operating times and high standards of process reliability are required.

Is it possible to apply a coating to the belt drum at a later date or to customise it?

The belt drums are usually made to customer specifications and can be supplied with the appropriate coating even when brand new. Furthermore, individual adjustments can be made in terms of hardness, coating thickness and surface texture.

Phone: +49 52 41 / 74 07 0
info@luetgert-antriebe.de
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