Deformable bearing housing

A bearing housing to receive and be deformed around, in use, a ball having a predetermined radius R to form a bearing, the bearing housing having approximately circular symmetry around a central axis, and comprising:

• a cup portion having a centre of curvature of approximately the radius R and thereby shaped to seat closely, in use, a first portion of the ball placed in the bearing housing;
• an upstanding wall portion having a concave inner surface and extending from the cup portion, the inner surface including a conforming portion lying about a plane that is perpendicular to the central axis and that contains the centre of curvature of the cup portion, there being a first clearance between the conforming portion and the equator region of the ball, the first clearance being greater than a second clearance between the cup portion and the first portion of the ball,
• the bearing housing being shaped such that, when the bearing housing is deformed around the ball to form a bearing, in use, the bearing housing is deformed so that the inner surface matches closely the shape of the ball.