About:

Zentratec is master distributor for STAHL CraneSystems, Germany. We advise and commercialize cutting-edge technology solutions for your material handling

We have a team of experienced technicians and engineers to efficiently meet your needs, committed to providing excellent and quality service.

STAHL Wheel Blocks

  • The use of our wheel blocks is extremely versatile in industries where heavy loads are moved.
  • Wheel loads ranging from 5,000 to 30,000 kg capacity
  • Wheels from 125 mm to 400 mm in diameter with or without guide rollers
  • High-performance drive systems specially designed for smooth start and braking travel operations.
ZENTRATEC, polipastos para el manejo de materiales

Take your engineering to the next level

  • «Olvídese de diseñar ruedas engranadas con motorreductores de piñón abierto»:
  • Six compact designs with carbon steel sheet bodies
  • Three connection methods, welded or bolted, to your supporting structures 
  • Direct drive from the travel drive to the drive wheel via a splined shaft
  • Low maintenance and few moving parts exposed to the environment
  • Encapsulated bearings 
  • Two travel speeds 4/1 or alternative with frequency inverter 
  • Long service life
  • Optionally available in explosion-proof ATEX and IEC versions
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Only at Zentratec you will find a complete product portfolio
From one brand, from one source

Your project's sustainability is our duty

ZENTRATEC, polipastos para el manejo de materiales

Robust Construction and Simple Installation

Los bloques de rueda para puentes grúa están diseñados con una arquitectura robusta y altamente adaptable.
Su configuración - permite una integración flexible con diversos tipos de estructuras portantes, facilitando la interfaz mecánica con el equipo existente. Gracias a sus múltiples opciones de fijación, el sistema garantiza una instalación rápida, precisa y compatible con las exigencias específicas de su maquinaria.

La selección de materiales de alta calidad aseguran durabilidad. La manufactura de alta precisión garantiza la fiabilidad y  robustéz en ambientes industriales exigentes.

Designed for Smooth and Efficient Operation

Estos sistemas de bloques de rueda están enfocados en proporcionar altos ciclos de trabajo. Cada parte, desde la tornillería hasta la pista de la rueda brindan un rendimiento óptimo que eleva la productividad de sus operaciones.

El motor de transmisión directa proporciona control y posicionamiento preciso durante ela operación. Esto mejora la seguridad y eficiencia operativa de sus procesos.
Todo con un requisito mínimo de mantenimiento.

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Polipastos STAHL Zentratec

Frequently Asked Questions

¿Cuál es la diferencia entre ruedas de acero forjado y hierro fundido?

El acero fundido o forjado presenta menores niveles de carbono, lo que le confiere una mayor ductilidad y tenacidad. Puede ser aleado con elementos como vanadio, cromo y manganeso para incrementar su resistencia mecánica, dureza y comportamiento frente a la fatiga. Generalmente, estos aceros son sometidos a tratamientos térmicos (como normalizado, temple y revenido) para optimizar sus propiedades estructurales según la aplicación.

En contraste, el hierro fundido contiene un alto contenido de carbono, lo que lo hace más frágil y menos resistente al impacto. Sin embargo, una de sus características más destacadas es su capacidad de autolubricación, derivada de la presencia de carbono (grafito) en su microestructura, lo cual beneficia el contacto entre las ruedas y el riel de la vía carrilera de la grúa, reduciendo la fricción y el desgaste.

Can these wheel blocks be used on both an overhead crane and gantry cranes?

Yes. Their modular design and various connection options make them a perfect fit for the end carriages on a wide range of equipment, including both overhead crane and gantry cranes of different sizes.
Incluso se cuenta con rodillos laterales para mayor estabilidad que sustituyen las cejas de las ruedas de hierro fundido.

What are the benefits of the encapsulated bearings?

The encapsulated bearings are sealed to keep necessary lubrication in and contaminants like dust and moisture out. This design feature is key to their high reliability, reduces maintenance needs, and helps ensure a long service life.

How do I choose the correct wheel diameter for my load?

The wheel diameter directly relates to the wheel loads it can support. A larger crane wheel has a wider contact surface with the rail, which helps distribute the load more effectively and is important when you need to handle heavy loads.
Adicionalmente hay que considerar el mayor ancho de riel disponible para reducir la carga y laminación.

What does the "direct drive via a splined shaft" feature mean?

Esto significa que el motor se conecta directamente al eje de la rueda de la grúa, eliminando la necesidad de engranajes abiertos. Este es un sistema más confiable y eficiente que proporciona mejor control de velocidad y tiene menos piezas que pueden desgastarse.

Do you sell these as single components or only as a full assembly?

While our wheel block systems offer a complete solution, we can also supply single components. You can order a replacement crane wheel, bearings, or a drive motor as needed for your equipment.

Are guide rollers necessary for all crane operations?

Guide rollers are small wheels mounted horizontally. They are not always needed, but they are very useful for keeping the crane in perfect alignment on the track, especially in high-speed applications or on very long runways.

What kind of heat treatment is used on the wheels?

The running surface and inner flanges of the wheels undergo a special heat treatment process. This hardens the steel, making it highly resistant to wear and pressure, which is critical for durability and safety.

What makes this a "low maintenance" system?

The minimum maintenance requirement comes from the smart design. With sealed bearings that don't need frequent lubrication, no open gears to maintain, and the use of high-quality materials, the whole assembly is built for performance with less downtime.

How do these wheel systems contribute to operational efficiency?

They improve operational efficiency by ensuring the reliable and smooth movement of heavy loads. The precise control over operation reduces cycle times, the durability means less downtime for repairs, and the smooth performance protects both the crane structure and the rails from excess wear.

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About:

Zentratec company founded in 2008, has an experienced, efficient, and committed team in providing quality and productivity to each of our clients.

Address

Av. Junipero Serra 2450,
Oficina 117,
Valle de Juriquilla.
C.P. 76230.
Querétaro,
México.

Contact Project Advisory

Phone: +52 442 3930530

Whatsapp: +52 442 2300639

Email: ventas@zentratec.com

Web: www.zentratec.com

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