Product Description:

The EB-406-C-11 is an explosion-proof permanent-magnet servo motor manufactured by Kollmorgen and supplied within the EB Explosion Proof Motors series. Designed for hazardous-location drive systems, the unit supplies rotational motion to pumps, agitators, and indexing tables while containing internal ignition sources. Its sealed construction allows high-performance servo capability in Class I and Class II environments without separate flameproof housings.

During steady operation, the motor delivers a continuous stall torque of 17.0 N-m at a winding temperature of 40 °C while drawing 27.2 Arms from the drive. That sustained capability is paired with a base speed of 5000 rpm, so the mechanical output reaches a rated power of 7.2 kW. The stator is wound for a line supply of 230 V AC, and at that voltage the back EMF constant is 37.7 Vrms per thousand revolutions while the torque constant equals 0.63 N-m/Arms. Low copper loss is supported by a DC resistance of 0.20 Ω, while 4.8 mH of inductance moderates current ripple from the inverter. Flying leads that are 609 mm long exit through a 3/4-14 NPT conduit hub, so field wiring can be made inside sealed junction boxes. The frame follows a standard metric mount and omits a rear shaft extension to simplify alignment inside tight enclosures.

For overload events, the magnetic circuit provides a peak torque reserve of 48.3 N-m, which the drive can reach by supplying up to 81.4 Arms for short intervals. Rotor inertia is 0.000929 kg-m², enabling fast acceleration without excessive control effort, and the thermal mass permits heat to accumulate for a thermal time constant of 12 min before steady-state temperature is reached. These dynamic and thermal margins support rapid indexing moves between duty cycles. Overall mass is 21.5 kg, which provides a stable motor body for vertical mounting while still remaining manageable for installation.