The PLG24, PLG42K, PLG42S, PLG52 and PLG63 planetary gearboxes now are available with the company’s brush and brushless dc motors. The gearboxes deliver high torque loads and are small, durable and quiet. They come in diameters from 24 to 63 mm and output torques to 100 Nm (74 lb-ft). Reduction ratios range from 4:1 to 710:1 with more than 10 standard ratios available in each size. Construction features vary, but typical versions include gears and ball bearings made of steel or engineered polymer.