... bearing, which ensures precise adjustment, stable and reliable running.4. Stitching PartAdopt servo motor.Max. working speed is 80 ... single, double and strengthened stitching at angle of 45°.4. Output PartAdopt stepless differential speed device to minimize forfex error.Adopt ... error.Automatic counting, piling and output.NO./ pile: 10,15,20,or 25 pcsAdopt Output delay device to prolong pressing time ...