Siemens 1FT5104-0AC71-1 — AC Servo Motor

Part number1FT5104-0AC71-1
BrandSiemens
CategoryServo Motor
DescriptionAC Servo Motor
ManufacturerSiemens
Product TypeAC Servo Motor
Product Line1FT5
Part Number1FT5104-0AC71-1
Weight35.00 lbs (15.88 kg)
Torque Constant (kT)1.09 Nm/A
Voltage Constant (kE)123 V / 1000 RPM
Winding Resistance per Phase0.095 Ω
Phase Inductance1.7 mH
DC Link Voltage Rating600 V DC
Rated Torque (100 K Winding)45 Nm
Rated Speed (Continuous)2000 RPM
Rated Current45 A
Cooling MethodNon-ventilated
Protection ClassIP 64
Mounting ArrangementIM B5 (IM V1, IM V3)
Feedback DevicesIncremental Encoder + Tachogenerator
Mass (with Brake)47 kg

The Siemens 1FT5104-0AC71-1 is an AC servo motor designed for precise applications. It features a torque constant of 1.09 Nm/A and a voltage constant of 123 V at 1000 RPM, providing reliable performance across its operational range.

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.

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