Product Description:

The 9FGHD is a flat-profile DC motor built by Kollmorgen for the ServoDisc Pancake DC Motors series. Its disc-armature construction allows the unit to deliver servo torque in tight axial spaces, making it useful for indexing tables, semiconductor handlers, and other motion axes that need rapid acceleration without adding length to a machine column. In an automation cell, the motor converts drive current into direct shaft rotation so that a controller can position loads precisely and repeatably.

The motor has an overall stack height of 2.81 in, and the aluminum housing measures 4.750 in in diameter. The assembly weighs only 3.20 lb, helping reduce the load supported by the mounting structure. Low rotor mass keeps reflected inertia to 0.0052 oz-in-sec², allowing fast velocity changes under closed-loop control. Power is routed through silicone-insulated leads sized at 18 AWG, providing adequate current capacity while remaining flexible for routing through slip rings or cable chains. Four tapped holes secure the endbell, and each blind hole is drilled to a depth of 0.344 in to accept machine screws without bottoming. These fasteners clamp against the motor face and stabilize the face mount during operation.

The gearhead interface adds only 1.500 in to the stack while supporting an axial thrust of 80 lb and a radial side load of 70 lb at an overhung distance of 0.75 in. The mounting interface uses a 4.330 in bolt circle, and its threads are cut to No. 8-32 UNC-2B for straightforward hardware selection. The shaft has a 0.02 × 45° chamfer for seal entry, a flat depth of 0.03 in, and a flat length of 0.688 in so couplings can lock securely without slipping. These shaft dimensions accommodate direct attachment of compatible couplings, pulleys, or gears while maintaining the required alignment.