C4.SM.000-3400 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB C4.SM.000-3400 is part of the SM Synchronous Servo Motors series and weighs 6.6 kilograms. It has a rated power of 1.57 kW, a rated speed of 3000 rpm, and a rated torque of 5 Nm. The servo motor operates at a rated voltage of 400 V and has a stall torque of 6 Nm with a current at stall torque of 4.2 A.
Internal Product Review
The C4.SM.000-3400 is a KEB SM synchronous servo motor with 5 Nm rated torque and 1.57 kW rated power. Rated speed of 3000 rpm and 400 V operation give the motor a very practical fit for standard motion systems. Strong dynamic margin is evident in the 6 Nm stall torque.
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Product Description:
The C4.SM.000-3400 servo motor is built by KEB as part of the SM Synchronous Servo Motors series. It functions as the rotary element in closed-loop drive systems found on packaging machines, feeders, and material-handling axes. By synchronizing its rotor field with the stator excitation, the unit provides precise velocity and torque regulation, allowing controllers to position loads accurately over repetitive duty cycles common in automated production. This operating principle helps the motor respond smoothly during repeated starts, stops, and speed changes. The compact frame also fits into limited installation space.
The electrical rating combines a supply of 400 V with a base speed of 3000 rpm, yielding 1.57 kW of continuous mechanical output. Under these conditions, the shaft supplies 5 Nm while the phase windings require 4.2 A. Locked-rotor performance peaks at a stall torque of 6 Nm, and the drive can inject up to 21 A during transient events such as acceleration or impact loading. A rotor inertia of 5.4 kg cm² supports fast starts without excessive overshoot, and a winding resistance of 3.4 Ω helps limit heat buildup during extended duty. This combination supports steady operation in applications that need repeatable torque delivery and stable speed control.
When load is released, the rotor accelerates to a no-load speed of 4100 rpm, a ceiling set by an electrical drive limit of 150 Hz and a winding voltage constant of 113 V per 1000 rpm. Maximum torque remains available down to 2750 rpm, which helps the axis hold force as it approaches commanded setpoints. The phase inductance of 13.1 mH filters switching harmonics so current commands remain stable, while the motor’s overall mass of 6.6 kg keeps moving assemblies light for gantry or pick-and-place systems. Stable current behavior also helps the motor track motion commands cleanly during frequent changes in speed and direction.
