Huvudaxel

Huvudaxel is a Swedish term used in engineering and technical contexts to denote the principal axis of an object or machine around which components rotate or are arranged. The exact meaning varies by field, but it generally refers to the central line or shaft that defines the primary direction of motion and serves as a reference for alignment, mounting, and bearing support.

In mechanical engineering and machine design, huvudaxeln commonly refers to the main shaft—often the drive shaft—that transmits torque from a power source to other parts of a mechanism. It can also denote the spindle or headstock axis in machine tools, where precise alignment and stable rotation are essential. In rotating equipment such as turbines and gearboxes, the huvudaxel provides the core axis along which components are balanced and connected.

In robotics and kinematics, the term can denote a principal axis for orientation and movement, used to define coordinate frames and rotational motion. In all contexts, the axis is usually a straight line or cylindrical surface around which bearing arrangements, gears, or couplings are organized, and its alignment impacts performance and wear.

See also: axis, main shaft, drive shaft, spindle, bearing.