Linear transfer systems with rigid cycle convey components synchronously and clocked in workpiece holders on workpiece carriers. The workpiece carriers are coupled at fixed intervals and are always guided in a closed circuit. Linear or longitudinal transfer systems are used for automatic transport between individual process stations within a transfer system with short cycle times. They enable orderly provision and exact positioning in the processing stations with direct application of force.

In rigid interlinking systems, all workpiece carriers are coupled at fixed intervals, are guided in a closed circuit and are centrally driven. Conveyors are e.g. chains, belts, toothed belts or steel belts on which the workpiece carriers are firmly mounted and moved on in synchronised cycles. Rigid linkages enable high cycle speeds and exact positioning without indexing in the processing stations with direct force application, but do not allow flexibility with regard to the material flow. Any malfunction or interruption causes the complete interlinked line to come to a standstill.