SIEMENS 1FK7044-7AF71-1UA3- SERVO MOTOR 7KG 002 EN60034
- MODEL: 1FK7044-7AF71-1UA3
- NO. YF: B528 0277 11 001
- Mo: 4Nm, Io: 4.5A
- Mn: 3.5Nm, In: 4A
- Nmax: 8000/min
- nN: 3000/min
- RESOLVER P: 3NO3
- Uin 171V, IP64
- M: 7KG
- RN: 002
- TH.CL.155(F)
- EN60034
- SIEMENS AG, INDUSTRIESTR.
- 1, D-97616 BAD NEUSTADT
- MADE IN GERMANY
The 1FK7044-7AF71-1UA3 is a high-performance, compact synchronous servo motor from Siemens’ 1FK7 series. It is designed for dynamic and precise motion control applications in industrial automation, such as machine tools, packaging machines, and robotics.
Key Features & Benefits
High Dynamic Performance: Offers excellent torque and acceleration characteristics for fast cycle times.
Compact and Robust Design: High power density in a small frame size, built to withstand harsh industrial environments.
Integrated DRIVE-CLiQ Interface: Enables seamless communication within the Siemens SINAMICS S120 drive system for simplified wiring, automatic configuration, and advanced diagnostic capabilities.
High-Resolution Encoder: Features a single-turn, 24-bit encoder system for extremely precise positioning and smooth rotation at low speeds.
Shaft Sealing: Equipped with a shaft seal to protect against dust and splashing water, enhancing reliability.
Forced Cooling (External Fan): The “7AF71” variant includes a non-rotating, externally powered cooling fan, allowing for high continuous torque even at low speeds.
Technical Specifications
Parameter Specification Notes
Motor Series 1FK7 Siemens “High Feature” compact servo motors.
Order Number / Article Code 1FK7044-7AF71-1UA3 The complete product identifier.
Motor Type Permanent Magnet Synchronous Motor (PMSM)
Frame Size 70 mm Compact physical size.
Rated Power ~ 1.40 kW At typical base speed.
Rated Torque (Mn) ~ 7 Nm This is the “7KG” designation (7 Nm, High Inertia).
Rated Speed (nn) ~ 2000 rpm Speed at which rated torque/power is delivered.
Maximum Torque (M0) ~ 19 Nm Peak torque for short-term overload.
Maximum Speed (nmax) ~ 6000 rpm The absolute maximum allowable speed.
Rotor Inertia High Inertia (“H” variant) Suitable for applications with higher load inertia.
Thermal Class Class F (155 °C) Standard insulation class.
Cooling Method Forced Ventilation (External Fan) Designated by 7AF71. Requires separate power supply.
Shaft Smooth shaft with keyway According to DIN 6885-1.
Bearing Standard bearings For normal radial forces.
Shaft Seal Yes Improves protection against contaminants.
Connection Connector, 12-pin For power and DRIVE-CLiQ.
Encoder System Single-turn, 24-bit (Hiperface) With DRIVE-CLiQ interface for Siemens drives.
Protection Class IP64 Dust-tight and protected against water splashes from all directions.
Insulation / Standards EN 60034 Conforms to European standards for rotating electrical machines.
Compatible Drive System SINAMICS S120 Primary drive system for seamless integration.
Detailed Breakdown of the Article Number: 1FK7044-7AF71-1UA3
Understanding the part number helps decode its features:
1FK7: The main series designation.
04: Frame size 70 mm.
4: Version/variant code for electrical design.
-7AF71: This is the key configuration code.
7: Frame size 70 mm (redundant but part of structure).
A: With holding brake.
F: Forced cooling (external fan).
71: Specific mechanical design (smooth shaft with keyway, specific seal).
-1UA3: This is the option code.
1: Standard version.
U: DRIVE-CLiQ interface for encoder.
A3: Specific connector set and mounting.
