Estimating Sewing Time by Machine RPM

RPM is the revolution per minute of a machine. The machine RPM determines how much minimum time is required for a specific seam length with a particular stitch per Inch. To estimate Sewing Time by Machine RPM, the following parameters are needed.

🗸 Stitch Per Inch (SPI)

🗸 Seam Length (In Inch)

🗸 RPM of Machine

If we have the above information, the following formula can easily derive sewing time/machine cycle time.

Sewing Time /Machine Cycle Time = SPI × Seam Length (In Inch)/RPM of Machine

Explanation
Let say,

A machine RPM = 2200

Calculated SPI = 12

Seam Length = 40 Inchies

Sewing Time /Machine Cycle Time = (12 × 40)/2200 = 218 min = 13.09 Sec.