Sany STC500
This sharp Sany STC500 could be photographed on a parking in Doha (QA). It is a 50-tonne crane installed on a 4-axle undercarriage. The crane's year of manufacture is 2016. Unfortunately it was not possible to identify the owner of the crane.
The undercarriage is powered by a 6-cylinder line engine with a power of 250 kW. The axles 3 and 4 are driven and the axles 1 and 2 are steerable. The smallest turning circle of the crane is 12 meters. The crane is mounted on 12.00R20 wheels.
The crane is in transit 13.75 meters long, 2.73 meters wide and 3.8 meters tall. The transport mass is approx. 42 tonnes.
The counterweight of 3.5 tonnes is fixed to the superstructure and integrated in the design of the crane. The superstructure has a 4 meter tailswing. Both hoist winches are in use and both have a maximum line pull of 5 tonnes with 18 mm hoist cable.
The cabine on the superstructure isn't tiltable.
On the undercarriage are multiple storage compartments for tools and lifting gear made. The crane has a 5-part main boom with an 11.5 meter base length and extends four times to a full length of 43 meters. The crane is bringing a 9.2 - 16 meter long bi-fold swingaway jib next to the base section of the main boom.
The outrigger base measures 6 x 7.2 meters. The control of the outriggers are positioned next to the front outriggers. On the deck of the undercarriage are the outrigger pads stored. Usually are the hooks fixed to the deck, the hoist rope is then locked up in the opening between the frame and the boom. The driver of the crane has then a better vision from the cabin.
Usually are cranes in many asian countries working with two hooks, a heavy hook with multiple reevings for the heavier loads and a ball hook for fast and smaller lifts.