Patent ID: 10975951

Abstract:
A motion control apparatus in the form of a sealed rotary table (10) includes a first annular seal (54) located between a bearing cap (48) of a case and an inner diameter of a cylindrical flange (60), and a second annular seal (56) located between a seal ledge (22) of an annular wall (18) of the case and the outer diameter of the cylindrical flange (60). An enclosure (24), the annular wall (18) and a planar annular disc (16) are integrally formed as a single piece part of homogenous material. A drive station (12) includes a rotor (110) rotatably mounted inside an annular sleeve (118) by a bearing (140) inside an annular end cap (136) at an axial extent less than that of the annular sleeve (118). An encoder (150) is located within the annular end cap (136) and within the axial extent of the annular sleeve (118).