Product Description:

The 9FGT is a direct-current servo motor produced by Kollmorgen within the ServoDisc Pancake DC Motors series. Using a printed armature topology, the unit delivers rapid acceleration in material-handling, indexing, and low-profile robotics applications where space behind the mounting plane is constrained. By combining a flat rotor with rare-earth magnets, the motor converts drive current into precise rotary motion suited for closed-loop positioning axes found in semiconductor tools, vision stages, and compact actuators. Its pancake form factor also simplifies face mounting to structural plates or gearheads without requiring a deep housing.

The motor has a basic length of 2.00 in, allowing the stator to fit within installations with limited depth. Its weight is 3.50 lb, so the motor can be supported by lightweight aluminum frames without extra bracing. A face-mount bolt circle of 4.330 in has four holes and aligns with common NEMA mounting patterns. Each hole has an 8-32 UNC-2B thread for attachment to panels or gear reducers. Output torque is transmitted through a shaft measuring 0.375 in in diameter. The shaft projects 1.000 in beyond the front bearing and has a 0.03 × 0.688 in machined flat, allowing set-screw couplings to lock without a keyway.

The motor’s dynamic response is aided by a rotor inertia of 0.0082 oz-in-sec², allowing the servo system to reach commanded speeds with little resistance to acceleration. Axial force along the shaft is limited to 5 lb, which must be considered when connecting lead screws or gearheads. The permitted overhung force is 25 lb when the load is applied 0.75 in from the front bearing, providing a clear limit for pulley and belt arrangements. A face pilot diameter of 1.156 in seats the motor accurately in a register bore. This pilot helps maintain concentric alignment between the motor and the connected machine component during high-speed operation.