B-604-C-A1-B2 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen B-604-C-A1-B2 is part of the Goldline B and BH Motors series and features a continuous stall torque of 31.2 N-m with a peak stall torque of 86.4 N-m. This motor delivers a rated power of 8600 watts, supports a nominal voltage of 230 VAC, and is rated at IP65 for protection. It weighs 23.1 kg and has a brake torque of 48 N-m.
Internal Product Review
The B-604-C-A1-B2 is a Kollmorgen Goldline B servo motor built for demanding motion applications, with 8600 W rated power and IP65 protection. Continuous stall torque of 31.2 N-m and peak stall torque of 86.4 N-m give the motor strong low-speed authority and confident overload capability. A well-balanced design for high-performance axes, especially where sealed construction and steady torque matter.
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Product Description:
The B-604-C-A1-B2 is a six-pole motor produced by Kollmorgen within the Kollmorgen Goldline B and BH Motors series. It supplies closed-loop motion for positioning tables, gantries, and automated tooling that require fast torque response and sustained output. By converting controlled three-phase electrical power into rotation, the unit supports speed and position control for industrial axes.
At the stator, the continuous stall torque is 31.2 N-m, indicating the torque available without rotor movement at the rated winding temperature. The torque constant of 0.792 N-m/Arms links phase current to developed torque and allows the controller to scale current loops directly. Output voltage rises with speed according to a back-EMF constant of 47.89 Vrms/kRPM, so the servo amplifier must maintain sufficient voltage margin at higher speeds. Copper loss corresponds to a phase resistance of 0.13 ohm, while current transients are shaped by a winding inductance of 3.3 mH. The motor has a power rating of 8.6 kW and a rated shaft torque of 19.1 N-m. These electrical values help determine the current, voltage, and thermal capacity required from the connected drive electronics during continuous operation.
The motor operates from a line source rated at 230 VAC and has an IP65 housing that protects internal components against dust ingress and low-pressure water jets. A rotor inertia of 0.00203 kg-m² permits rapid acceleration while supporting stable servo tuning for medium-mass loads. The integral holding brake provides 48 N-m of static torque when powered by 90 VDC, preventing drift on vertical axes after the drive is disabled. For brief overloads, the electromagnetic assembly can deliver a peak stall torque of 86.4 N-m. The motor has an overall shipping mass of 23.1 kg, which must be considered when selecting mounting hardware and lifting equipment.
