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Siemens 1FK7042-5AK81-1TH3 — Servo Motors

Siemens 1FK7042-5AK81-1TH3 Servo Motor, 3 Nm, 6000 rpm

MPN1FK7042-5AK81-1TH3
End of Life

Siemens 1FK7 compact synchronous servomotor, 3.0 Nm, 6000 rpm, natural air cooling, IM B5 mountable, rotatable power/signal connectors.

StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Product details

Reading the rating on the nameplate

The 1FK7042-5AK81-1TH3 is a 1FK7 compact synchronous servomotor rated 3.0 Nm with a 6000 rpm ceiling and natural-air cooling, so it is sized for the mid-range point of a positioning axis where stall torque in the low Nm range and high rotational speed both matter. The shaft-side mounting is IM B5 with the IM V1 and IM V3 variants also called out, and the power and signal connectors can be rotated through 270°, which lets the tech clock the connector face to the cabinet entry on install without re-terminating the cable.

What eol_hot does to the BOM line

For a kitting lead that means every spare pulled for the rack has to come with a confirmed source — the kit has to be complete with the mating connector set and the encoder cable, not a motor alone, because a stranded tech with a half-built spare is a two-hour round trip nobody budgets for.

Frequently asked questions

What is 1FK7042-5AK81-1TH3's listed description?

It is a 1FK7 compact synchronous servomotor at 3.0 Nm with a 100 K thermal class and 6000 rpm maximum speed, naturally cooled, with IM B5 mounting (also IM V1 and IM V3) and rotatable power/signal connectors.

How do I get current pricing and availability for 1FK7042-5AK81-1TH3?

Submit the RFQ with the quantity and the connector / cable set that has to ship with it; availability and the current price are confirmed against the BOM at quote time through independent distribution.

MPN
1FK7042-5AK81-1TH3