Cat exercise wheel

A cat exercise wheel, comprising an exercise wheel assembly, two brackets, and at least two exercise wheel supporting crossbars, wherein the two brackets are installed side-by-side on two sides of the exercise wheel assembly;

• the at least two exercise wheel supporting crossbars are arranged side-by-side and detachably installed between the two brackets, and the exercise wheel assembly is erected on the at least two exercise wheel supporting crossbars;
• and
• a pair of silent bearings are installed on each of the at least two exercise wheel supporting crossbars, a pair of exercise wheel brackets are disposed at an outer circumference of the exercise wheel assembly, an outer ring of each of the silent bearings has a soft rubber contact portion, an outer edge of each exercise wheel bracket has a contact portion protruding radially, and the contact portion of the outer edge of each exercise wheel bracket is in contact with the soft rubber contact portion of at least two of the silent bearings,
• wherein each silent bearing comprises a bearing body and a rubber wheel;
• and
• a bearing inner ring of the bearing body is fixedly sleeved on each of the at least two exercise wheel supporting crossbars, the rubber wheel is fixedly sleeved on a bearing outer ring of the bearing body, and an outer side of the rubber wheel is provided with a u-shaped recess disposed around a circumference of the rubber wheel, said u-shaped recess receiving therein and in contact with the contact portion of the outer edge of the exercise wheel bracket disposed at the outer circumference of the exercise wheel assembly.