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Product description
With frame size 1FK6042 and winding designation -6AF71, the Siemens 1FK6042-6AF71-1AG2 is a permanent-magnet AC servo motor from the 1FK6 range. Its rated speed is 3,000 min⁻¹. The plain shaft end has runout tolerance N and no holding brake. Feedback is provided by a Sin/Cos incremental encoder with 1 Vpp and 2,048 pulses per revolution. The motor has IP65 protection, while IP67 is specified for the drive-end flange. Cooling is achieved by natural convection without a separate fan. At a temperature rise of 100 K, the rated torque is 2.6 Nm and the rated current is 2.4 A. Under the same thermal condition, the standstill torque is 3.2 Nm and the standstill current is 2.8 A. The optimum operating point is specified at 3,000 min⁻¹ and 0.82 kW. The maximum permissible mechanical speed is 8,500 min⁻¹. Further limits are a maximum torque of 10.6 Nm and a maximum current of 9.5 A. The torque constant is 1.15 Nm/A and the voltage constant is 76 V per 1,000 min⁻¹. The motor has six poles and a thermal time constant of 35 minutes. Without a holding brake, the rotor moment of inertia is 3.30 × 10⁻⁴ kgm²; the motor weighs 5.0 kg. The dimensional drawing specifies a square flange measuring 120 × 120 mm, an overall length of 260 mm, a shaft diameter of 19 mm and a shaft length of 40 mm. For replacement or maintenance, the complete order number, winding, encoder version, shaft form, brake option, degree of protection and mechanical dimensions are the individual comparison criteria.
Example image – The item supplied will have the stated manufacturer or type number and the stated condition category. Serial number, manufacturing date, labels, colour, packaging and normal signs of use or storage may differ. Specifications
| Manufacturer | Siemens |
|---|---|
| Product range | 1FK6 |
| Manufacturer/order/identification number | 1FK6042-6AF71-1AG2 |
| Device type | Permanent-magnet AC servo motor |
| Rated speed | 3,000 min⁻¹ |
| Rated torque at 100 K | 2.6 Nm |
| Rated current | 2.4 A |
| Standstill torque at 100 K | 3.2 Nm |
| Standstill current at 100 K | 2.8 A |
| Optimum power | 0.82 kW |
| Maximum permissible mechanical speed | 8,500 min⁻¹ |
| Maximum torque | 10.6 Nm |
| Maximum current | 9.5 A |
| Encoder system | Sin/Cos 1 Vpp incremental encoder, 2,048 pulses/revolution |
| Shaft end | Plain shaft, runout tolerance N |
| Holding brake | Without |
| Degree of protection | IP65; drive-end flange IP67 |
| Rotor moment of inertia without brake | 3.30 × 10⁻⁴ kgm² |
| Dimensions | 120 × 120 × 260 mm (W × H × D) |
| Weight | 5.0 kg without holding brake |
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What are the performance data of the Siemens 1FK6042-6AF71-1AG2?
The motor has a rated speed of 3,000 min⁻¹. At 100 K, the rated torque is 2.6 Nm and the rated current is 2.4 A; the optimum operating point is 0.82 kW.
Which encoder and shaft version does the motor have?
Version 1AG2 has a Sin/Cos incremental encoder with 1 Vpp and 2,048 pulses per revolution, together with a plain shaft and no holding brake.
What applies if an item develops a defect within 14 days?
For the condition categories “Used, removed from an installation” and “New, old stock”, the contractual 14-day right of return in the event of a defect applies. The defect must occur within 14 calendar days after delivery and be reported in text form within the same period.
In particular, the REHA tamper-evident seal must remain fully intact and our RMA approval is required before return. In an accepted case, we decide between replacement and refund. Details in Section 11 of the Terms.
Which shipping methods and delivery times are available?
The shipping method, shipping cost and estimated delivery time are confirmed for the specific order. Depending on the item, destination and urgency, we can check parcel, express or freight shipping as well as collection.
A delivery date is binding only if we expressly confirm it as binding.
Which payment terms apply?
The payment terms stated in the checkout or order confirmation apply. Depending on the order and customer, payment is made in advance or against invoice.
International deliveries and deliveries to new customers are generally made against advance payment unless we expressly confirm another payment arrangement.
Can I return an item ordered incorrectly or found incompatible?
No. There is no general B2B right of return, exchange, cancellation or withdrawal. Incorrect or duplicate orders and a lack of suitability or compatibility with the customer’s installation are not covered by the contractual 14-day right of return in the event of a defect. Details in Section 12 of the Terms.
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