EB-402-B-11-B3 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen EB-402-B-11-B3 is part of the EB Explosion Proof Motors series and has a rated voltage of 230 VRMS. It provides a continuous stall torque of 7.00 N-m and a peak torque of 19.80 N-m. The motor also features a brake voltage of 24 VDC and a brake static torque of 8.0 N-m.
Internal Product Review
The EB-402-B-11-B3 is a Kollmorgen explosion proof motor rated for 230 VRMS and 6.80 N-m output. Peak capability reaches 19.80 N-m, while the 8.0 N-m brake supports confident stopping in hazardous-duty applications. A strong technical choice for demanding motion systems, with torque performance standing out as a key advantage.
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Product Description:
The EB-402-B-11-B3 is an explosion-proof brushless servo motor produced by Kollmorgen and organized within the EB Explosion Proof Motors series. Designed for hazardous-location automation, the unit converts electrical power into controlled rotary motion for positioning tasks where flammable gases or dust are present. Its flame-proof housing allows the motor to be mounted in classified zones while delivering the continuous torque and speed precision required by drives in pumps, mixers, or valve actuators. The brushless design also supports accurate closed-loop motion because electronic commutation can respond quickly to changing drive commands.
Under rated operating conditions, the windings accept a line supply of 230 VRMS, and the motor develops a back electromotive force proportional to speed at 67.2 VRMS/kRPM. Torque production is linked to the electromagnetic design through a torque constant of 1.11 N·m/ARMS, so a continuous current of 6.4 ARMS supports a continuous stall torque of 7.00 N·m. Thermal load on the copper is limited by a DC resistance of 2.6 Ohms and a 50 mH phase inductance that moderates current ripple. For steady-state motion, the rated torque is 6.80 N·m, which gives the motor a usable operating range before it reaches stall conditions. This electrical combination helps the servo maintain stable current behavior during low-speed operation and repeated start-stop duty.
For transient events, the drive can command up to 19.80 N·m of peak torque while sourcing a peak phase current of 18.8 ARMS; these short-term figures accommodate acceleration of the rotor and attached load. The rotating group carries a moment of inertia of 0.000323 kg·m², so the motor can respond quickly to control-loop changes without excessive overshoot. A fail-safe spring-applied brake is integrated; its coil resistance is 27.37 Ohms and it releases at 24 VDC while holding the shaft at a static torque of 8.0 N·m during power-off conditions. This brake helps keep the shaft from moving when control power is removed, which is useful where the load must remain in place between motion cycles.
