Hoisting machine arrangement and method for preparing gear thereof

A hoisting machine arrangement comprising:

• a rope drum, which has a driven gearwheel;
• a hoisting motor for driving the rope drum;
• and
• a gear between the hoisting motor and the rope drum, the gear having a body and a driving gearwheel, the driving gearwheel of the gear being coupled to the driven gearwheel of the rope drum, wherein the gear body includes:
• a first drilling, which is arranged for fitting a shaft of the driving gearwheel;
• and
• a second drilling, which is parallel to the first drilling and arranged for fitting a portion of a shaft of the rope drum,
• wherein the driven gearwheel is formed or attached to the rope drum,
• wherein the driving gearwheel forms an open transmission in combination with the driven gearwheel, and
• wherein the rope drum includes an end part, the end part being directly mounted on two bearings located one after the other on the shaft of the rope drum to align the rope drum and the gear to obtain parallel axial lines of the shaft of the rope drum and the shaft of the driving gearwheel to provide a correct center distance between the shaft of the rope drum and the shaft of the driving gearwheel and a correct tooth contact for the driving gearwheel and the driven gearwheel.