C3.SM.000-645H KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB C3.SM.000-645H is a servo motor from the SM Synchronous Servo Motors series. It delivers a maximum speed of 9000 rpm and a maximum torque of 29.25 Nm, with a max current of 31.0 A. The motor features 4 pole pairs, winding inductance of 15.8 mH, and winding resistance of 2.4 Ohms.
Internal Product Review
The C3.SM.000-645H is a KEB synchronous servo motor with 29.25 Nm max torque and 9000 rpm max speed. A 4.75 A rated current paired with 5.65 Nm stall torque supports stable servo performance under continuous and low-speed loading. Strong electrical design with 15.8 mH winding inductance makes this motor a highly capable choice for dynamic motion applications.
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Product Description:
The C3.SM.000-645H is a permanent-magnet synchronous servo motor produced by KEB and supplied in the SM Synchronous Servo Motors series. It is intended for closed-loop industrial automation, where it converts three-phase electrical power into controlled rotary motion for indexing tables, packaging machines, and general-purpose axes. Integration with KEB servo drives allows precise current, speed, and position control, making the motor suitable for tasks that require repeatable acceleration, deceleration, and holding capability during cyclic operation.
The drive can draw up to 31.0 A during peak transients, while its windings support a continuous rated current of 4.75 A at thermal equilibrium. Under adequate drive voltage, electrical frequency can accelerate the rotor to 9000 rpm, enabling high throughput on short-stroke axes and rapid indexing moves. At locked rotor, the electromagnetic design produces 5.65 Nm of stall torque, giving stable holding force for positioning tasks. The voltage constant is 103.24 Vpk/1000 rpm, which indicates the back EMF generated as speed rises and supports drive tuning. The phase inductance is 15.8 mH, which helps smooth ripple current and reduce torque pulsation across the load.
For short overload cycles, the motor can deliver up to 29.25 Nm, so gearless couplings can handle intermittent load spikes without saturation. These bursts require additional phase current, and the stall current limit is 5.4 A during repetitive indexing duty. Copper losses are influenced by a phase winding resistance of 2.4 Ω, which affects steady-state temperature rise and drive power dissipation. With four pole pairs, electrical commutation occurs eight times per mechanical revolution, which supports smooth torque production and responsive operation in closed-loop servo systems.
