Lenze GST04-1GVCK-063C22 AC Servo Motor (0.63 kW)

The Lenze GST04-1GVCK-063C22 is a permanent-magnet synchronous AC servo motor from Lenze's GST04 series. It provides 0.63 kW (630W) of continuous output power at 2000 RPM, with a peak torque of up to 8.5 Nm. The motor is designed for high dynamic positioning tasks in packaging machines, pick-and-place systems, and converting machinery. The model SDSGARS06322 is an alternative ordering code for the same motor (referring to specific mechanical features). The motor includes a resolver as its feedback device, compatible with Lenze's 9300, 9400, and i700 servo drives.

Technical Specifications

• Model Numbers: GST04-1GVCK-063C22 / SDSGARS06322

• Rated Power: 0.63 kW (0.85 HP)

• Rated Speed: 2000 rpm

• Maximum Speed: 4000 rpm

• Rated Torque: 3.0 Nm

• Peak Torque: 8.5 Nm (for 2 seconds)

• Rotor Inertia: 1.68 kg·cm²

• Torque Constant (Kt): 0.85 Nm/A

• Voltage Class: 230V AC (400V optional)

• Number of Poles: 8

• Insulation Class: F (155°C)

• Protection Rating: IP65 (IP54 optional)

• Feedback Device: Resolver (single-turn, 2 poles)

• Brake: Optional (24V DC holding brake not included in base model)

Mechanical Features

The motor features a smooth, stainless steel shaft (keyway optional) and a robust aluminum housing with cooling fins for natural convection. The flange size is 63 mm (IEC 63), compatible with standard gearboxes. The motor includes a 14-pin circular connector (M23) for power and resolver signals. An optional IP65-rated cable with flying leads or D-sub connector can be ordered separately. The shaft is dynamically balanced to ISO 1940 Grade G1.0.

Performance Characteristics

The GST04 motor delivers high overload capacity (up to 250% of rated torque) for short accelerations. Its low cogging torque (<1% of rated) ensures smooth motion at low speeds, beneficial for tension control and winding applications. The resolver provides absolute position information without needing a backup battery, and it is immune to electromagnetic interference, making it suitable for welding environments. The motor can operate continuously at speeds up to 4000 rpm with appropriate drive settings.

Compatible Drives

The motor is intended for use with Lenze servo drives: 9300 vector (EVF9330 series), 9400 HighLine (E94A series), i700 (E70A series), and also with third-party drives that support resolver feedback (e.g., Siemens Sinamics, Rockwell Kinetix, with appropriate configuration). Drive parameters for motor data (stator resistance, inductance, flux constant) are available in Lenze's Engineer software library.

Applications

Common applications include flying shears, cut-to-length systems, rotary knife modules, unwinders/rewinders, labeling machines, and positioning axes in assembly lines. Its compact size and high torque density make it ideal for retrofit of pneumatic cylinders into electric servo axes.

Environmental Data

Operating temperature: 0°C to 40°C (derate above 40°C). Storage: -20°C to 80°C. Humidity: 5-95% non-condensing. Vibration: 25 m/s² (2.5g) at 10–200 Hz. Shock: 200 m/s² (20g) for 11ms. The motor meets CE, UL, and cURus standards (File E171342).

Dimensions

Length (excluding shaft): 155mm; shaft diameter 14mm x 30mm length; flange 63mm square with 4x M5 mounting holes on 70mm circle. Weight: 2.9 kg (without brake).

Connection and Wiring

The motor has a 14-pin connector (male) with the following pinout: 1,2 = power phases U,V,W; 3 = ground; 4,5 = resolver excitation (R1,R2); 6,7,8 = resolver sine, cosine, reference. A separate power connector (M23) for the optional brake uses pins 9 and 10. Use shielded twisted-pair cables for resolver signals, with shield connected at the drive end only.

Conclusion

The Lenze GST04-1GVCK-063C22 servo motor combines proven reliability, resolver-based feedback, and high torque density, making it a solid choice for motion control applications requiring robust performance without the complexity of absolute encoders.