Product Description:

The DH102A-22-1210S is a Kollmorgen direct-drive rotary motor supplied under the DDR Direct Drive Motors series. It is designed for flange mounting and has a straight through-bore shaft that accepts a face coupling, allowing power or vacuum lines to pass directly through the rotor. This arrangement supports gearless applications such as indexing tables, printing cylinders, and semiconductor chucks. A straight electrical connector simplifies cable routing inside tight enclosures, and the standard 400/480 VAC winding is compatible with common industrial bus voltages. Mechanical support is provided by a single-bearing design, while the short rotor stack keeps the overall motor length compact. The unit is not sealed and must be installed in a protected environment. Resolver feedback is standard, and the motor uses the A winding type.

During continuous operation, the motor can deliver 74.6 N·m of torque and withstand overloads up to 252 N·m for rapid indexing moves. Its rated speed reaches 300 rpm, supporting controlled low-speed operation without an external gearbox. Position data comes from the resolver, and the drive converts the analog sine-cosine signals to a digital resolution of 262,144 counts per revolution. This resolution supports smooth velocity loops, accurate position control, and fine contouring across the motor’s operating range. A rotor inertia of 0.0992 kg·m² balances dynamic stiffness with moderate acceleration capability, helping the servo system maintain responsive and stable motion. Direct coupling also removes gearbox backlash from the drive train and reduces the number of mechanical transmission components between the motor and load.

The closed-loop system offers repeatability of ±5.0 arc-seconds, allowing commanded positions to be revisited with minimal variation. Overall system accuracy remains within ±135 arc-seconds when thermal and load effects are included, supporting applications that require consistent angular positioning. A frame outside diameter of 11.19 inches provides a broad mounting surface that resists torsional deflection under changing loads. The assembly weighs 43.8 kg, contributing to thermal capacity and vibration damping during high-precision operation. Its substantial frame provides a rigid interface for mounting the driven load directly to the rotor. The through-bore leaves the center of the rotary axis available for routing utilities or accommodating machine components.