The RULMECA® 138E Motorized Pulley, with machined helical gearbox, performs with a gearbox efficiency of 95% of nominal power, in a compact diameter of 5.45". With a minimum roller length (RL) of 11.81" and power ranging from 0.13 to 1.0 HP, the 138 Motorized Pulley is suitable for most small diameter applications including light agricultural conveyors, light C & D debris conveyors, and mobile and portable conveyors. The 138E features a standard enclosure class of IP66/67 and is also available in stainless steel for wash-down applications.