OPENTECHNICAL PUBLICATION OT-2026-000002545 A base for supporting a portable crane and a method for removing a main bearing of a wind turbine Published: 2026-09-15T19:13:45.847010Z Permanent URL: https://opentechnical.org/p/OT-2026-000002545 Categories: Lifting, Positioning & Manipulation > Hoists and Cranes ------------------------------------------------------------------------ ABSTRACT A base (100) for supporting a portable crane for handling components of a wind turbine. The base (100) is mountable on the wind turbine, and configured to be switched between a first configuration and a second configuration. In the first configuration the base (100) is configured for being supported by a main bearing of the wind turbine. In the second configuration the base (100) is configured for being supported by a bed plate of a nacelle of the wind turbine. The base is configured for supporting the portable crane while switching between the first configuration and the second configuration. A method for removing a main bearing of a wind turbine is also disclosed. ------------------------------------------------------------------------ OpenTechnical publication OT-2026-000002545 Published 2026-09-15T19:13:45.847010Z https://opentechnical.org/p/OT-2026-000002545