BLDC Motor with Gearbox

BLDC Motor with Gearbox

A BLDC motor with gearbox pairs a brushless DC motor with a reduction gearhead (commonly planetary or spur). The motor runs at higher speed, and the gearbox turns that into a slower output with torque multiplication based on the selected ratio (within efficiency and rated limits).

Sizes and ratios

• Frame diameter: typically about 22 mm to 100 mm+ (series dependent).
• Reduction ratio: commonly 3:1 to 100:1 (model dependent).
• Speed & torque: higher ratios reduce output speed; available torque rises accordingly but is limited by motor/gearhead ratings and heat.

What to check before selecting

• Mounting pattern, shaft size, and coupling fit between motor and gearbox.
• Continuous/peak torque ratings, max input speed, and allowable radial/axial loads.
• Voltage and power match with your driver/controller and duty cycle.
• Environment needs (e.g., IP54 where offered) and operating temperature limits.
• Controller interface, especially if speed regulation or position feedback is required.

Common uses

Robotics, e-mobility drives, conveyors and pick-and-place units, imaging/stabilization mechanisms, and aboratory equipment subassemblies (subject to project qualification and regulatory requirements).