When sourcing a dental lathe, the most critical factor is the motor power and speed range. Look for units offering variable speeds (typically 1,500 to 3,600 RPM) to handle different materials like acrylics, chrome-cobalt, or gold. Ensure the motor is a high-torque, brushless induction motor for longevity and quiet operation. Additionally, verify the spindle height and compatibility with standard tapered spindles or Chucks (like the Chuk/Remover system) to ensure it fits your existing laboratory tools.