Motion guide device and the actuator

PROBLEM TO BE SOLVED: To provide means for surely attaching an external member, in a motion guide device which is constituted of FRP.SOLUTION: A raceway member 11 or a moving member 13 which constitutes a motion guide device 10 is constituted of: a rolling part 30 which contacts with a plurality of rolling bodies 12, and is composed of a metal material constituting a rolling-body rolling face 11a; an attachment part 75 in which an attachment hole 76 for attaching an external member is formed, and which is composed of the metal material; and a raceway main body part 31 or a moving main body part 43 which is joined with the rolling part 30 and the attachment part 75, forms the raceway member 11 or the movement member 13, and is formed of FRP. The attachment part 75 and the raceway main body part 31 or the moving main body part 43 have joining holes 72, 73, 77 and 78 which are opened to a direction orthogonal to a lamination direction of fiber-reinforced sheets S of the FRP constituting the raceway main body part 31 or the moving main body part 43 at joining, and can be joined to each other by using joining means 80 which are arranged in the joining holes 72, 73, 77 and 78.SELECTED DRAWING: Figure 7