Choosing an optimal motor for a specific application requires balancing factors like voltage, current, speed, efficiency, and power. Critical too are any unique load requirements acting on the motor beyond pure torque rotation. Evaluating these factors early via a collaborative approach between design engineers and motion experts is key to ideal motor selection.

When engaging a miniature motor vendor, first convey the application's torque, speed, and working point. Understanding the motor's load helps determine necessary power and accessories. Integration method matters as well, since load types significantly impact lifetime, reliability, and motor design needs.

Torque load is present in most rotary motor uses, converting electrical to mechanical energy. But just matching a target torque value is often insufficient. The provider needs the full motion cycle profile to ensure the motor can supply required power without overheating. Peak torque, speed variations, and duty cycle must be considered too.

Radial loads like belt tensions apply perpendicular force on the motor shaft. This affects bearing options. Brush DC motors and steppers typically use lower-cost sleeve bearings supporting less radial load and lifetime versus ball bearings. For high radial loads, ball bearings better ensure adequate lifetime.

Brushless DC motors predominantly utilize ball bearings for higher speeds. The maximum radial force depends on bearing size, spacing, and load position. Longer motors with oversized bearings allow higher radial loads.

Axial loads push parallel to the shaft. Dynamic types vary force while running, like in worm gears. Static axial loads, such as press-fitting components, apply constant force. Both must not exceed bearing limits to prevent premature failure. Shaft support during press-fitting allows higher force absorption directly through the shaft rather than the bearings.

In summary, torque is just one consideration for ideal miniature motor selection. Radial and axial loads can profoundly impact bearing design, lifetime, noise, and reliability. Early collaboration with motion experts to evaluate all application loads ensures choosing the optimal motor design.