Highrise welding Toronto: Crane Welding / Ring Gear Repair.

JW Portable Welding & Repairs supports other contractors with our welding and repair services.

Welders face many challenges when working on a crane. These challenges are associated with the height, difficult access, wind and low temperatures. The most difficult challenge that a welder will face is meeting the height on a crane. It is difficult for welders to stretch the heavy cables from the welding machine, which is usually standing at the bottom of the crane up to the welded piece placed on the crane (approx. 100ft from the ground). Dragging the cables while climbing the ladder is very risky. The crane operator can assist in lifting the cables to the desired height but the welder still has to be able to reach them. In many occasions, reaching the lifted cables is not possible. Another challenge includes regulating the amperage during the more sophisticated welding positions. Welders very rarely have amperage regulators with leads of 200ft.

Lack of access proves to be another challenge for the welder while working on a crane. The lack of access exists on the ground as well as on the crane itself. It is also difficult for welders to find an area to put their welding machine that allows them to be as close to the bases of the crane as possible. It is not always possible to get even closer to the crane with the welding machine due to the construction layout, causing the welders to drag their cables through the construction material. Additionally, the structure of the crane is not designed to perform the welding process in a comfortable position. Welders have to be equipped with light and portable protective gear when welding in such challenging conditions.


Here is a step by step on how we have managed to accomplish this very challenging weld:

  1. We utilize our self-propelled welding machine that is usually used in the construction of high-rise apartment buildings. We placed this small machine right on the crane (about 100ft off the ground & approx 15ft from the welding spot)
  2. The machine is equipped with very light welding cables to avoid any resistance when dragging them through the cranes structure. The machine was placed close enough to the welder for ease of access in regulating the amperage if needed.
  3. We have used welding rods with a slightly upgraded composition for the teeth rebuilds on the ring gears. (S.M.A.W. – Stick Welding)
  4. Once the material was built up sufficiently, the tooth shape was formed by grinding.
  5. Finally, we tested each tooth after it has been formed by moving the satellite gear through the newly formed tooth of the ring gear.


JW Portable welding & Repairs delivers this mobile welding service throughout South Western Ontario. We happily accept projects involving mobile welding in the following areas:

  • Toronto
  • Mississauga
  • Brampton
  • Milton
  • Halton Hills
  • Oakville
  • Richmond Hill
  • Vaughan


Please visit our specialization page for more detailed information.

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For further inquiries or to book services please contact:

Darek, @ (519) 872-2552