Standard Value of Motor belt for Width Adjustment of Timing Belt on Samsung SM321 Standard Timing Belt Tension (N): 35 Frequency (Hz): 252 ± 10% Remarks: Use the U-505(Tension Gage) Standard Value of Synchronizing Belt for Width Adjustment of Timing Belt on Samsung SM321 Standard Value of Timing Belt Tension: Entry/exit belt for PCB transfer on Samsung SM321