Thomson SUPER16OPN Super Bushed Ball Bearing, 1.000" Bore. Thomson SUPER16OPN. Super Ball Bushing, Open, Bore Dia 1.000 In, Inside Dia Tolerance +/-. 001, Outside Dia 1.563 In, Required Housing Bore Dia 1.563 In, Slot Width 0.560 In, Slot Angle (Degrees) 15, Retention Hole Dia 0.140 In, Retention Hole Location 0.130 In, Between Grooves 1.884 In, Length 2.250 In, Dynamic Load Capacity 780 Lb, Temp Range 0 - 185 F, Delrin Material, For Use With Thomson Shafting'.