Universal all-rounder for cranes and systems

The SR wheel block programme is used in crane, trolley and systems building as well as in custom applications and special constructions. The SR wheel block comes in six different sizes for wheel loads from 5,000 kg to 30,000 kg.
Thanks to various mounting possibilities, the wheel block can be used universally and flexibly. Various custom versions are available for use under exceptional conditions. Optional guide rollers or a derailment protection device add to the safety of your system.

The SR wheel block programme is available in an explosion-proof version for zones 1, 2, 21 and 22.

  • Six sizes for wheel loads from 5,000 kg to 30,000 kg
  • Three standard configurations for connection to customer structures
  • Low-maintenance direct drive with two speeds
  • Strong, durable standard components
  • Maintenance-free anti-friction bearing
  • Optionally with frequency-controlled motors
  • Optional version with angle drive
  • Optionally in explosion-proof design according to ATEX and IECEx
  • Other versions on request 
  • Radblocksystem SR

    The SR wheel block comes in six different sizes for standard applications as well as custom solutions.

  • Portalkran mit Seilzügen AS 7 zum Bau der Metro in Amsterdam

    The SR wheel block in use on a portal crane with an AS 7 wire rope hoist.

  • Radblöcke als Basis für das Katzfahrwerk eines Seilzug AS 7

    The SR wheel block can be used to move almost everything that is heavy.

  • Grafik einer Krananlage mit beweglichem Hebezeug

    Application example crane system

  • Grafik eines beweglichen Portalkrans mit herabhängenden Hebezeug

    Application example portal crane

  • Grafik einer beweglichen Hebebühne

    Application example lifting platform

  • Grafik eines beweglichen Regalroboters

    Application example stacker crane

  • Grafik eines Transportsystems mit beweglichen Hebezeugen

    Application example transport systems

  • Grafik eines Faltdaches, das mit Hilfe von Radblöcken ein- und ausgefahren werden kann.

    Application example architectural application

  • Grafik einer beweglichen Förderanlage

    Application example conveyor system


  • Grafik Radblock SR – Seiten- und Vorderansicht

    SR wheel block

    Side and front view

型号 SR 125 SR 160 SR 200 SR 250 SR 315 SR 400
车轮-⌀ [mm] 125 160 200 250 315 400
最大轮压 [t] 5 7 10 16 22 30
L1 [mm] 273 345 408 437 500 658
L2 [mm] 100 125 125 160 160 200
L5 [mm] 135 172 189 208 230 322
h1 [mm] 165 190 235 295 350 440
h6 [mm] 100 100 100 100 100 155
⌀ d4 [mm] 100 125 125 160 160 200
轨道宽度 k [mm] 40, 50 40, 50, 60 40, 50, 60 40, 50, 60, 70 50, 60, 70, 80 60, 70, 80, 100


  • Technische Darstellung des Radblock SR. Seitenansicht und Vorderansicht.

    Superior technology

    The SR wheel block programme boasts superior technology. The low-maintenance components of the modular wheel block are optimally matched to each other. They guarantee constant performance, long service life and high efficiency. The SR wheel block stands out for its simple, universal and flexible assembly.

  • Technische Darstellung des Gehäuses eines Radblocks SR


    • High quality thanks to own, modern production
    • Dimensional accuracy thanks to five-sided enclosure
    • Graduated sizes for different wheel loads
    • Optionally with buffer
  • Technische Darstellung des Laufrad eines Radblocks SR


    • Spheroidal graphite cast iron EN-GJS-700 (GGG70)
    • Flange-guided on both sides
    • Quiet run, reduced runway wear
    • Low wear and strong thanks to self-lubrication
    • Maintenance-free anti-friction bearing thanks to lifetime lubrication
  • Technische Darstellung des Laufrad eines Radblocks SR


    • Leichte Kontrolle der Spurkranzabnutzung
    • Einfacher Wechsel des montierten Lauf­rads: nach Ent­fernen des Puffer­flansches kann das Lauf­rad nach Ab­ziehen der Lager und Lager­flansche nach vorne heraus­gezogen werden.
  • Aufnahme der Führungsrollen und dem Entgleisungsschutz vom Radblock SR

    Guide rollers and derailment protection

    • Applications: for extra wide rails, to reduce travelling resistance, to reduce skewing forces, to minimise runway wear
    • Minimisation of cornering forces and wear
    • Wheel design without flange, the opposite side is equipped with a derailment protection device.
    • Larger rail widths possible
  • Technische Darstellung des Fahrantriebs eines Radblocks SR


    • Pole-changing travel motors
    • Low-maintenance direct drive (vertical/horizontal) with torque support
    • Optionally single or centralised drive or without drive
    • Optionally with frequency-controlled motors
    • Space-saving angle drive

Options and features

Although it is already first-class in its standard design, you can make the wheel block even safer, more economical and more convenient with a range of mechanical, electrical and electronic options. They simultaneously improve performance, prolong service life and make it possible to adapt the wheel block individually to specific requirements.
Here are some of the options frequently used.

  • Standardfahrantrieb mit horizontaler Drehmomentstütze am Radblock

    Standard travel drive vertical/horizontal

    The travel drive is mounted to the wheel block ex works vertically with a torque support. The standard travel drive can optionally also be mounted to the wheel block horizontally with a torque support.

  • Winkelfahrantrieb stehend mit vertikaler Drehmomentstütze am Radblock und liegend mit seitlichem Anbau der Drehmomentstütze.

    Angle travel drive vertical/horizontal

    The angle travel drive saves valuable space and guarantees optimal accessibility for maintenance work even in confined spaces. It is used, for example, in portal cranes or in storage technology when passing through recesses.

  • Die Stahlkonstruktion wird auf der Oberseite des Radblocks direkt angeschraubt.

    Head connection H

    The steel structure is bolted on directly at the top of the wheel block.

  • Der Radblock wird an der Stirnseite ohne Zwischenflansch direkt an die Tragkonstruktion geschweißt.

    Welded connection W

    The wheel block end is welded directly to the supporting structure without intermediate flange.

  • Der Radblock wird zwischen zwei Wangen eingeschoben und mit Bolzen befestigt.

    Inserted connection I

    The wheel block is pushed in between two cheeks and fastened with bolts. Lateral fine adjustment and fastening by threaded pin and nut.



SR wheel block

8 pages



Wheel Blocks – SR

44 pages



钢丝绳葫芦 AS 7 – 电机












Bei der Herstellung explosionsgeschützter Krankomponenten geht STAHL CraneSystems keine Kompromisse ein: eigene Forschung, eigene Produktion, internationale Zulassungen. Und über 100 Jahre Erfahrung.

组件 Ex


 组件 Ex

在英国,很多的 ST 型环链葫芦被用于铁路轨道的维护和更换。