Siemens 1FK7042-5AF71-1AH0 — The Siemens 1FK7042-5AF71-1AH0 belongs to the 1FK7 series and is categorized as a synchronous servo motor featuring permanent magnets

Part number	1FK7042-5AF71-1AH0
Brand	Siemens
Category	Servo Motor
Description	The Siemens 1FK7042-5AF71-1AH0 belongs to the 1FK7 series and is categorized as a synchronous servo motor featuring permanent magnets
Manufacturer	Siemens
Product Line	1FK7
Part Number	1FK7042-5AF71-1AH0
UPC	662643005936
Weight	13.06 lbs (5.93 kg)
Product Category	Synchronous Servo Motor With Permanent Magnets
Standard Operating Speed	3000 rpm
Pole Count	8
Nominal Torque	2.6 Nm
Nominal Current	1.9 A
Rotor Inertia	3.450 kg·cm²
Energy Efficiency	89.00%
Torque Per Ampere	1.40 Nm/A
Back EMF Constant At 20°C	89.0 V/1000 rpm
Coil Resistance At 20°C	5.15 Ω
Inductance Of Stator Windings	29.0 mH
Enclosure Protection Rating	IP64
Cooling System	Passive Air Cooling
Peak Mechanical Speed	9000 rpm
Braking Torque Of Holding System	4.0 Nm

The Siemens 1FK7042-5AF71-1AH0 belongs to the 1FK7 series and is categorized as a synchronous servo motor featuring permanent magnets. It is designed to achieve a standard operating speed of 3000 rpm and delivers a nominal torque of 2.6 Nm, making it suitable for various industrial applications.

Also written as

662643005936

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.