High-speed motor for fast production (often 3,000–5,000 stitches per minute depending on model)
Strong metal construction for durability and stability
Single-function design (each machine is usually dedicated to one task like straight stitching, overlocking, or buttonhole making)
External motor system (clutch or servo motor) for consistent power
Large work table for handling bigger fabric pieces
Automatic lubrication system in many models for smooth operation