All The inner ring has a tap d 12-35 mm The inner ring has a top screw d 40-90 mm Deep groove ball bearings with widened inner rings With eccentric sleeve d 12-25 mm D carry eccentric sleeve 30-35 The eccentric sleeve is d 40-55 mm With eccentric sleeve d 60-120 mm Circular outer ring with eccentric sleeve With positioning slot With rubber lining Attach the tightening sleeve Steel centering ring for strip steel English d 1.375-2.938 mm English d 0.625-1.25 mm Adjust the deep groove ball bearing. The outer ring of the spherical surface fits into the hole Tuned heart deep groove ball bearing The outer ring of the spherical surface is a square or hexagonal inner hole