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MyLock 634D 















When you want to make the most of your serging time, with professional results, the MyLock 634D is unmatched. It has 2 needles and 2, 3 or 4 thread overlock stitching. Threading is a breeze due to color-coded thread guides and an easy lower looper threading system.  The MyLock 634D also lets you quickly switch to rolled hemming without changing the needle plate.


  • 2, 3, or 4 thread serger

  • Lay-in thread tension dial

  • Threading chart 

  • Color coded thread guides

  • Tension release device

  • Easily accessible lower looper guides

  • Changeable thread guide

  • Quick change rolled hem

  • Lower looper pretension setting slider

  • Easily retractable upper knife

  • Adjustable foot pressure

  • Snap on presser feet

  • Adjustable stitch length 1mm to 5mm

  • Differential feed ratio 0.5 to 2.25

  • Adjustable cutting width 3.1mm to 7.3mm

  • Maximum speed 1,300 spm

  • Waste chip box


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