Boca Bearings carries a wide assortment of bearings for tattoo machines. Our high precision ceramic bearings and standard bearings are designed for rotary tattoo machines that use an armature bar drive. Sometimes called a cam wheel, cam, motor bearing and fly wheel. The bearing size will affect the speed of the stroke. A smaller bearing will result in a faster machine and a larger bearing will result in a slower machine. Contact us directly with your bearing quote.