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Product description

The Siemens 1FT5074-1AC71-1AB0 is a permanent-magnet AC servo motor from the 1FT5 series for precise feed, positioning and machine-tool axes. The documented AC71 winding is designed for a rated speed of 2,000 min⁻¹ and provides 14 Nm rated torque at 100 K with 9.3 A rated current. For standstill sizing, Siemens specifies 14 Nm at 60 K and 18 Nm at 100 K. Maximum torque is 56 Nm, maximum speed is 3,200 min⁻¹ and maximum current is 45 A. These reliable ratings support matching with the drive amplifier, cables and existing axis parameterization. The torque constant of 1.64 Nm/A and voltage constant of 186 V per 1,000 min⁻¹ support electrical assignment. A winding resistance of 1.2 Ω and winding inductance of 13.2 mH are documented; the electrical time constant is 11 ms, the mechanical time constant 3.3 ms and the thermal time constant 40 minutes. Depending on the brake version, rotor moment of inertia is 44.2 or 36.7 × 10⁻⁴ kgm². These values are particularly relevant to spare-parts selection for dynamic load changes, vertical axes and closely matched feed drives. For replacement procurement, the 1FT5074 family designation alone is insufficient: winding, encoder, holding brake, shaft end, flange, connector orientation and mounting dimensions must match the existing machine axis. Current limits, DC link, motor cable and controller data must also be checked before commissioning. Coupling, mounting, required degree of protection and available cable lengths should likewise be compared with the installed motor and machine documentation. The Siemens 1FT5074-1AC71-1AB0 is therefore a clearly defined spare-parts position for installed systems with an exactly matching motor and connection version.

Siemens 1FT5074-1AC71-1AB0

Specifications

Manufacturer Siemens
Product series 1FT5
Manufacturer / order / identification number 1FT5074-1AC71-1AB0
Device type Permanent-magnet AC servo motor
Winding code AC71
Rated speed 2,000 min⁻¹
Rated torque at 100 K 14 Nm
Rated current 9.3 A
Standstill torque at 60 K 14 Nm
Standstill torque at 100 K 18 Nm
Maximum speed 3,200 min⁻¹
Maximum torque 56 Nm
Maximum current 45 A
Limiting torque 24 Nm
Torque constant 1.64 Nm/A
Voltage constant 186 V per 1,000 min⁻¹
Winding resistance 1.2 Ω
Winding inductance 13.2 mH
Electrical time constant 11 ms
Thermal time constant 40 min
Control cabinet with PLC modules and automation components
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FAQ

Frequently asked questions

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What are the rated values of the Siemens 1FT5074-1AC71-1AB0?

For the AC71 winding, Siemens documents a rated speed of 2,000 min⁻¹, rated torque of 14 Nm at 100 K and rated current of 9.3 A.

What must be checked when replacing the 1FT5074-1AC71-1AB0?

In addition to the complete order number, the winding, encoder, holding brake, shaft end, flange, connector orientation, cables and controller parameterization must match the existing axis exactly.

Is there a guarantee?

Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.

Please note that the guarantee only applies when the warranty seal is undamaged.

If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.

Further details are provided in the terms and conditions supplied with your quotation.

How quickly do you dispatch and which shipping options are available?

We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.

Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.

We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.

Which payment methods are available?

Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.

As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.

Can we return items if they were ordered incorrectly?

Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.

Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.

Is there a discount when ordering several items?

For larger order quantities or several items of one type, we can offer individual discounts.

Simply send us a quick enquiry - we check availability and will gladly prepare a tailored quotation with quantity pricing.

Do you also purchase industrial spare parts?

Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.

The process is straightforward: email us an inventory list or overview photos at info@reha-industriekomponenten.de. We calculate a market-based purchase price and send you an offer.

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