Hinge

Reference

Panel:Physics ‣ Rigid Body Constraint
Type:Hinge

The hinge permits 1 degree of freedom between two objects. Translation is completely constrained. Rotation is permitted about the Z axis of the object hosting the Physics constraint (usually an Empty, distinct from the two objects that are being linked). Adjusting the position and rotation of the object hosting the constraint allows you to control the anchor and axis of the hinge.

The Hinge is the only 1-axis rotational constraint that uses the Z axis instead of the X axis. If something is wrong with your hinge, check your other constraints to see if this might be the problem.

Options

Limits
Z Angle

Enables/disables limit rotation around Z axis.

Lower
Lower limit of Z axis rotation.
Upper
Upper limit of Z axis rotation.