Shaftless batches air chuck

The utility model relates to a shaftless batches air chuck, including the chuck main part, be equipped with the voussoir in the front end of chuck main part, be equipped with reset spring, piston and diaphragm seals subassembly in the rear end from the inside to surface in proper order, moreover the piston can be connected with the voussoir in synchronous seesaw ground transmission, all laterads of chuck main part inlay and are equipped with the bloated key of a plurality of, expanding, the key is connected with the voussoir transmission and outside having expanded and inside withdrawal under the voussoir effect of seesaw. Can fix the reel when batching through this air chuck, reel installation, disassembling operation are simple, convenient, swift, and bearing capacity also strengthens greatly, and it all has an improvement to batch efficiency and effect, batch the physiosis axle with the tradition simultaneously and compare and saved the material greatly, and market competition is strong, is favorable to po