A component supply device (60, 160) arranged adjacent to a mounter that mounts components on a board which supplies the components to the mounter comprising: a wafer sheet replenishment section which replenishes a wafer sheet on which multiple components are arranged in a specified pattern on a sheet, and a wafer sheet conveyance section which conveys a wafer sheet supplied from the wafer sheet replenishment section to the mounter; wherein the wafer sheet conveyance section includes: a moving slider which moves between a position near the wafer sheet replenishment section and a position near the mounter, a table which includes a loading surface on which a wafer sheet is loaded and which is supported on the moving slider, and a rotating mechanism which rotates the table around a specific rotation axis (θ) perpendicular with respect to the loading surface; wherein the table is supported on the moving slider by a number one support point, a number two support point, and a number three support point which are provided on a circumference with the rotation axis (θ) at the center; characterized in that the rotating mechanism includes: a number one guide for moving the number one support point in an arc with respect to the rotation axis (θ), an actuator (94, 85) for moving the number one support point along the number one guide, number one driven guide which moves the number two support point in an arc with respect to the rotation axis (θ) when the number one support point is moved along the number one guide, and number two driven guide which moves the number three support point in an arc with respect to the rotation axis (θ) when the number one support point is moved along the number one guide, wherein the number one guide includes an R guide provided on the moving slider, and an R slider which moves along the R guide and is attached to the number one support point of the table, said R guide guiding said R slider around the rotation axis (θ). a moving slider which moves between a position near the wafer sheet replenishment section and a position near the mounter, a table which includes a loading surface on which a wafer sheet is loaded and which is supported on the moving slider, and a rotating mechanism which rotates the table around a specific rotation axis (θ) perpendicular with respect to the loading surface; wherein the table is supported on the moving slider by a number one support point, a number two support point, and a number three support point which are provided on a circumference with the rotation axis (θ) at the center; characterized in that the rotating mechanism includes: a number one guide for moving the number one support point in an arc with respect to the rotation axis (θ), an actuator (94, 85) for moving the number one support point along the number one guide, number one driven guide which moves the number two support point in an arc with respect to the rotation axis (θ) when the number one support point is moved along the number one guide, and number two driven guide which moves the number three support point in an arc with respect to the rotation axis (θ) when the number one support point is moved along the number one guide, wherein the number one guide includes an R guide provided on the moving slider, and an R slider which moves along the R guide and is attached to the number one support point of the table, said R guide guiding said R slider around the rotation axis (θ). a number one guide for moving the number one support point in an arc with respect to the rotation axis (θ), an actuator (94, 85) for moving the number one support point along the number one guide, number one driven guide which moves the number two support point in an arc with respect to the rotation axis (θ) when the number one support point is moved along the number one guide, and number two driven guide which moves the number three support point in an arc with respect to the rotation axis (θ) when the number one support point is moved along the number one guide, wherein the number one guide includes an R guide provided on the moving slider, and an R slider which moves along the R guide and is attached to the number one support point of the table, said R guide guiding said R slider around the rotation axis (θ).