A planet wheel carrier (101, 201, 301) for a planetary gear, the planet wheel carrier being suitable for supporting at least four planet wheels and comprising: - a first end-section (102, 202) for supporting first ends of shafts of planet wheels of the planetary gear so that geometrical rotation axes of the planet wheels are pitched at substantially uniform intervals on a periphery of a circle, - a second end-section (103, 203) for supporting second ends of the shafts of the planet wheels, and - a support structure (104, 204) connected to the first and second end-sections and located between the first and second end-sections in an axial direction of the planet wheel carrier and, when the planet wheel carrier is supporting the planet wheels, between the planet wheels in a circumferential direction of the planet wheel carrier, wherein the support structure is connected to outer rims of the first and second end-sections and configured to be so far from a geometrical rotational symmetry axis of a sun shaft of the planetary gear and the geometrical rotation axes of the planet wheels are configured to be so near to the geometrical rotational symmetry axis of the sun shaft that the planet wheel carrier allows a maximum diameter of the planet wheels to be at least 90% of a distance (d) between the geometrical rotation axes of adjacent ones of the planet wheels, and wherein the first end-section is attached to the support structure so that the first end-section is non-destructively detachable from the support structure, characterized in that the first end-section comprises separate sectors each of which comprising a portion for supporting at least one of the first ends of the shafts of the planet wheels and being attached to the support structure so that each of the sectors is non-destructively detachable from the support structure. - a first end-section (102, 202) for supporting first ends of shafts of planet wheels of the planetary gear so that geometrical rotation axes of the planet wheels are pitched at substantially uniform intervals on a periphery of a circle, - a second end-section (103, 203) for supporting second ends of the shafts of the planet wheels, and - a support structure (104, 204) connected to the first and second end-sections and located between the first and second end-sections in an axial direction of the planet wheel carrier and, when the planet wheel carrier is supporting the planet wheels, between the planet wheels in a circumferential direction of the planet wheel carrier, wherein the support structure is connected to outer rims of the first and second end-sections and configured to be so far from a geometrical rotational symmetry axis of a sun shaft of the planetary gear and the geometrical rotation axes of the planet wheels are configured to be so near to the geometrical rotational symmetry axis of the sun shaft that the planet wheel carrier allows a maximum diameter of the planet wheels to be at least 90% of a distance (d) between the geometrical rotation axes of adjacent ones of the planet wheels, and wherein the first end-section is attached to the support structure so that the first end-section is non-destructively detachable from the support structure, characterized in that the first end-section comprises separate sectors each of which comprising a portion for supporting at least one of the first ends of the shafts of the planet wheels and being attached to the support structure so that each of the sectors is non-destructively detachable from the support structure.