DH083M-23-1320 Kollmorgen
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The Kollmorgen DH083M-23-1320 is part of the DDR Direct Drive Motors series, featuring a flange mount and an 8.60 inch outer diameter frame size. This motor offers a continuous torque of 50.4 N-m with peak torque up to 177 N-m, and supports a maximum speed of 500 rpm at 480 VAC. It has a dual bearing design, 1,048,576 counts per revolution encoder resolution, and a straight thru bore shaft with face coupling.
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Product Description:
The DH083M-23-1320 belongs to the DDR Direct Drive Motors series produced by Kollmorgen. This frameless unit uses a standard 400/480 VAC winding and is intended for flange mounting inside machinery where backlash-free rotation is required. A dual-bearing design supports the straight through-bore shaft so loads can be coupled directly to the rotor hub. The motor frame measures 8.60 inches in outside diameter, and the rotatable 90-degree power and feedback connector simplifies cable routing in tight spaces. A sine encoder serves as the feedback device, allowing the drive to control commutation and positioning without additional gearing.
Under continuous operation, the motor delivers 50.4 N·m of torque while remaining within its thermal limits. During short duty cycles, it can produce a peak torque of 177 N·m for rapid indexing or acceleration. When operated from a 480 VAC drive, the rotor reaches a maximum speed of 500 rpm, supporting conveyor tables, rotary actuators, and index wheels. The encoder produces position data at an interpolated resolution of 1,048,576 counts/rev, and the motor maintains repeatability within ±1.24 arc-sec, enabling tight registration in high-precision assembly or inspection stations. The motor is not sealed, so it must be installed in an area free from coolant spray and airborne particles that could reach its internal laminations.
Dynamic response is aided by a rotor inertia of 0.0301 kg·m², balancing fast acceleration with stability when external disturbances are present. The frame can withstand a bending moment of 236.4 N·m at the mounting flange. The bearings accommodate an axial compression load of up to 3,360 kg or an axial tension load of up to 371 kg. System accuracy across the full travel remains within ±27 arc-sec, supporting coordinated multi-axis motion when the motor is paired with a compatible Kollmorgen servo drive.
