Abstract: A deflection unit for deflecting the electron beams in a cathode ray tube has a hollow coil support of a synthetic material. At one end, the support has projections around which a clamping apparatus is arranged for securing the deflection unit to the neck of the cathode ray tube. The clamping apparatus has projections located opposite each other, while their mutual distance determining the diameter of the clamping apparatus is adjustable by tightening a bolt. The ends of the projections are constructed in such a way that they support each other when the bolt is tightened.

Abstract: A cathode ray tube is provided with a deflection unit. The yoke is secured to a flange of a coil holder by means of connecting elements. These connecting elements are flexible in the radial direction so that differences in thermal expansion between the yoke and the rest of the deflection unit are compensated in a flexible manner. By virtue thereof, movement of the yoke relative to the coils, which leads to an irreversible change of the deflection fields, is precluded or is at least less likely.