Flat belt pulleys with cylindrical bore

We supply flat belt pulleys according to DIN 111 as standard undrilled , pre-drilled or drilled to finished size according to customer specifications and provided with groove and / or set screw.

The economical solution for classic flat belt drives, transport systems and bucket elevators. Benefits result from a large assortment with an extensive stock store and fast availability. Flat belt pulleys in all common diameters are available from stock.

Ready drilled flat pulleys are usually balanced in grade G16, upon request G6.3 or G2.5 are also possible.

Individual drives require individual solutions. In the event of deviations from DIN 111, the need for special geometries, intermediate sizes or higher peripheral speeds, it is possible to produce exclusive custom-made products.

All geometries can be easily produced by a flexible, model-free moulding process. From lot size 1 piece , for requirements as urgent spare parts, prototypes, pilot series models or small series , flat belt pulleys are produced according to customer specifications or drawings.

The design in alternative materials (EN-GJS, steel, aluminum, plastic, etc.) is also possible.

They are ideal for drives with intermittent loads where short -term slippage is certainly desirable or for bucket elevators that go beyond the standard sizes.

Downloads

Flat belt pulleys(945 KB)

Accessories

Industrial belts / V-belts

Measurement

Tensioning elements

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 crown width 750 mm
Maximum pulley weight approx. 6,000 kg

Flexible moulding process | Fast delivery

Individual model setups are not required – there are no model costs!
Manufactured according to DIN 111
Change requests or adaptations can be accommodated without costs
Short term production and delivery possible
TL standard washers in all common diameters incl. TaperLock version of bushings 1008-5050 in stock

Materials

Standard: Cast iron with lamellar graphite EN-GJL-200 DIN (GG-20) EN 1561
Alternative: Cast iron with lamellar graphite EN-GJL-300 (to GG-30), Spheroidal graphite (EN-GJS-400 to EN-GJS-800) or cast steel (GS), Aluminium

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
Individual surface treatment and special painting is also 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 advantages of flat pulleys with a cylindrical bore?

Flat pulleys with a cylindrical bore allow for flexible further machining in line with the specific machine design. Design engineers and maintenance technicians can customise fits, grooves or clamping systems and adapt them to existing shaft geometries. This makes these drive pulleys particularly suitable for special-purpose machine construction, retrofit projects and bespoke drive solutions.

What types of flat pulleys to DIN 111 are available?

Flat pulleys in accordance with DIN 111 are available as standard in unbored, pre-drilled or finished versions. Depending on the application, the pulleys can be bored to the final dimensions specified by the customer and fitted with a keyway and/or an adjusting screw. This allows the drive pulleys to be optimally adapted to existing shaft and drive systems.

Can flat pulleys be manufactured with custom bore sizes?

Yes, flat pulleys can be custom-machined in accordance with the customer’s technical specifications. In addition to cylindrical finished bores, keyways, adjusting screws and other mechanical machining operations are also possible. This makes it easier for designers to integrate them directly into new or existing machine designs and reduces the need for additional machining during assembly.