Abstract: A spindle conveyor system having a continuous conveyor chain, including a plurality of chain plates that are connected by chain pins, movably mounted in an enclosure structure. The conveyor chain is provided with guide rollers. A plurality of carrier blocks are each fixedly secured to the top side of an individual chain plate. A workpiece spindle is rotatably mounted on each of the carrier blocks and adapted to carry a workpiece holder fixture on the upper end thereof. Each of the carrier blocks has guide rollers operatively mounted thereon. Guide plates are mounted in the enclosure structure for guiding engagement with the conveyor chain guide rollers and the carrier block guide rollers.