The RH Series of radiation-hardened brushless servo motors is designed to provide reliable operation and accommodate rapid acceleration and deceleration. The units are suitable for radiation-intensive applications such as pebble reactors, fuel processing, nuclear waste storage, and the processing of decommissioned weapons for disposal. Typically, high-energy, gamma radiation particles attack non-metallic materials in a motor, and lubricants, varnish, lamination bonding, and cable insulation deteriorate and crumble. To ensure long service life in a radiation environment, RH Series motors are built using radiation-resistant materials. The motors are available in four standard frame sizes as well as custom sizes. Standard units are offered with continuous output torque ranging from 15 to 400 in.-lbs or momentary peak torque from 30 to 1,000 in.-lbs. The motors are also available with rotor inertia from 0.17 to 36.7 oz-in.² and with continuous output power of 700 to 7,800 W. As standard, RH Series motors are rated for a total accumulated dose of 2 x 10⁸ rads. However, ratings up to 1 x 10⁹ rads are available on a custom basis. Engineers can choose from additional custom radiation-hardened solutions, such as ac induction motors, assemblies, and complete RH motion control systems.

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