Transport system, in particular transverse stretching systems

A transport system for a stretching installation comprising:

• at least one guide path,
• a transport chain is arranged so as to circulate on said guide path,
• the guide path comprising a guide rail,
• the transport chain comprising a multiplicity of chain link units that are articulatedly connected to one another,
• a plurality of clip chain units that are each divided into a clip part and into a chain part comprising a chain link, and
• a support rail which accommodates a weight force of the plurality of clip chain units,
• wherein:
• the support rail or the guide rail, or the support rail and the guide rail, is or are equipped with a duct which extends through the support rail and/or the guide rail in a longitudinal direction at least in one length segment,
• a support rail running surface comprises a multiplicity of outlet openings formed therein, through which outlet openings compressed air can be supplied via the duct so as to generate an air cushion between the support rail running surface and an air bearing cushion plate on the clip chain unit, and/or
• a guide rail running surface comprises a multiplicity of outlet openings formed therein, through which outlet openings compressed air can be supplied via the duct so as to generate an air cushion between the respective guide rail running surface and a bearing device on the clip chain unit.