YASKAWA USAIKM-60-ES21 AC SERVO MOTOR SPECIFICATION

USAIKM-60-ES21 is a compact medium-frame permanent magnet AC servo motor from Yaskawa classic USAIKM series, engineered to pair with legacy CACR series servo amplifiers and early Sigma servo drives. It adopts fully enclosed natural air-cooled construction without auxiliary cooling fan, non-brake internal structure with EU customized ES specification encoder and terminal wiring layout for automated precision equipment and small CNC feed axes. Optimized for compact installation space, the unit features low cogging torque and stable dynamic performance for frequent cyclic start-stop and high-repeat precision positioning applications in European-standard automated machinery.

USAIKM stands for compact fully enclosed natural cooling servo base series; numeral 60 refers to corresponding power grade of 0.6kW rated output; letter E represents European market customized structural and wiring specification; middle S denotes special fixed pin assignment for incremental rotary encoder; digits 21 define rear dual independent round connectors for separated power cable and encoder harness routing.

The motor is designed for three-phase AC 200V~230V, 50/60Hz industrial mains input. Continuous rated output power is 0.6kW with rated full-load operating current of 4.1A and fixed rated rotational speed at 3000rpm. Continuous rated torque reaches 1.91Nm while instantaneous peak overload torque can reach three times rated torque to withstand heavy startup shock and transient impact load.Equipped with differential line-drive incremental encoder following exclusive ES customized pinout definition complying with European wiring standard, the feedback component directly matches designated EU-version CACR servo drives without rewiring or firmware modification. Stator winding adopts Class F insulation standard with built-in internal temperature sensing circuit transmitting overheat signal to matched servo amplifier for automatic thermal shutdown protection. No built-in electromagnetic brake is installed inside this model, requiring separate external mechanical locking fixture for vertical mounting anti-drop protection. Internal terminal compartment integrates surge suppression elements to improve anti-interference against industrial site power surge and electromagnetic noise disturbance.

The whole motor housing features IP54 ingress protection rating and relies entirely on casing natural convection heat dissipation without external cooling fan setup. Output shaft is standard solid straight shaft with built-in factory standard flat keyway for rigid coupling connection with miniature ball screw or small reduction gear unit; overall net weight is approximately 3.1kg with standard compact flange mounting dimension for space-saving equipment installation.Permissible operating ambient temperature ranges from 0°C to +40°C, storage temperature spans -20°C to +70°C; applicable working relative humidity is limited between 5%RH and 80%RH under non-condensation environment. Continuous rated load needs appropriate derating when installation elevation exceeds 1000 meters above sea level due to deteriorated natural cooling efficiency at high altitude. The unit can endure regular industrial vibration within 10Hz~55Hz frequency range; working environments containing corrosive gas, continuous liquid splashing or dense conductive dust accumulation are strictly prohibited for long-term operation.

USAIKM-60-ES21 is originally matched with Yaskawa EU-spec CACR small-medium power servo amplifier series, supporting two mainstream external command input types: ±10VDC analog voltage speed instruction and differential pulse position command transmitted from upper CNC or PLC controller. The servo system can switch freely between position control, speed control and torque control modes to satisfy diverse motion requirements of precision automation equipment. Incremental encoder configuration requires complete mechanical origin homing operation after full power interruption to recover accurate zero position before formal equipment running.

Multi-layer safety protection is realized through coordination between motor internal sensors and paired servo drive. Winding over-temperature detected signal triggers overload protection shutdown to avoid winding burnout caused by long-time overloading; encoder cable open-circuit or poor contact activates dedicated encoder fault alarm displayed on servo panel; stator winding short-circuit and abnormal input overcurrent leads to hardware overcurrent protection and immediate power cutoff. All internal signal circuits are equipped with noise suppression components to strengthen anti-interference capability against peripheral inverter electromagnetic interference on industrial workshop sites.

Direct field replacement requires identical original USAIKM-60-ES21 spare part; non-EU standard variant or brake-equipped motors cannot be directly substituted unless full servo parameter reset and connector wiring rearrangement are finished after replacement. Before disassembling for bearing inspection or encoder maintenance work, users must fully cut off three-phase main power supply and wait no less than 15 minutes for full discharge of servo internal DC bus capacitor to eliminate residual high voltage and avoid electric shock risk.Routine periodic maintenance includes fastening power and encoder plug terminals every three months, replenishing high-temperature resistant bearing lubricant grease after every 8000 cumulative running hours and cleaning dust accumulated on motor casing every half year to maintain rated heat dissipation performance. Random modification on original ES-series encoder pin definition or internal power wiring will result in uncontrolled motor runaway and permanent servo drive fault locking.

This compact servo motor is widely deployed on small desktop CNC feed axes, SMT automation conveying and positioning equipment, miniature packaging machinery, automatic testing indexing equipment and compact non-standard customized automation machines, especially suitable for horizontal mounting installation requiring high-speed frequent reciprocating movement and micron-level repetitive positioning accuracy under light to medium load working conditions.