Siemens 1FK7042-2AK71-1BG2 — Permanent-magnet Synchronous Motor

Part number1FK7042-2AK71-1BG2
BrandSiemens
DescriptionPermanent-magnet Synchronous Motor
ManufacturerSiemens
Product TypePermanent-magnet synchronous motor
Product Line1FK7
Part Number1FK7042-2AK71-1BG2
UPC887621241957
Weight11.00 lbs (4.99 kg)
Motor DesignCompact design
Rated Speed6,000 rpm
Rated Torque1.5 Nm
Static Torque (100 K)3.00 Nm
Stall Current (100 K)4.40 A
Efficiency89.00%
Moment of Inertia2.900 kg·cm²
Voltage Constant44.5 V/1,000 min⁻¹ at 20°C
Torque Constant0.68 Nm/A
Degree of ProtectionIP65 and DE flange IP67
Cooling MethodNatural cooling
Encoder SystemSingle-turn absolute encoder (24 bits)
Shaft EndPlain shaft
Maximum Speed (Mechanical)9,000 rpm

Siemens has developed the 1FK7042-2AK71-1BG2 model, featuring a permanent-magnet synchronous motor ideal for high-performance applications. It boasts a compact design, with a rated speed of 6,000 rpm and a maximum mechanical speed of 9,000 rpm.

Also written as

887621241957

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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