Here are the items that we found.
Discontinued by Siemens
1FK7043-4CH71-1BG0
SYNCHRONOUS MOTOR 1FK7-HD 3,5 NM
This obsolete drive unit is listed as a spare-part class drive with IP64 constant-torque capability at its rated voltage. Enclosure rating is IP64.
Family: SYNCHRONOUS MOTOR 1FK7-HD 3OMS SERVOMOTUPC 887621248116
ProtectionIP64
Check these against your nameplate to confirm the exact model.
Discontinued Jan 0001 · Spares & repair until Jan 0001· Milestone P.M300
Get a tested replacement
The exact 1FK7043-4CH71-1BG0 — tested and warrantied — is the fastest way to get back up and running. Drops into your existing panel with no rewiring or reprogramming.
Tested & warrantied
Genuine Siemens
Ships fast
Reply in 5 minutes during business hours
Other routes
Repair or exchange
Keeps your exact configuration. Often the lowest-cost route.
Tested & warrantied
Genuine Siemens
Reply in 5 minutes during business hours
Deep obsolete inventory
Frequently asked questions
Is the SYNCHRONOUS MOTOR 1FK7-HD 3,5 NM still available?
Siemens discontinued the SYNCHRONOUS MOTOR 1FK7-HD 3,5 NM in Jan 0001.Spare parts and repair support from Siemens is listed until Jan 0001.IAC can help you source a tested replacement or repair option.
Can I still buy a new 1FK7043-4CH71-1BG0?
Siemens no longer manufactures this MLFB as a new catalog item. IAC can often source tested surplus units, exchange/refurbished drives, or engineer an equivalent replacement — request a quote for current options.
Can a SYNCHRONOUS MOTOR 1FK7-HD 3,5 NM be repaired?
Yes — repair, exchange, and spare parts may still be available for the SYNCHRONOUS MOTOR 1FK7-HD 3,5 NM.Request a repair quote and we will confirm options for your unit.
How long will spare parts be supported?
Siemens lists spare and repair support for this part until January 01, 0001. Availability after that date depends on Siemens stock and third-party sources.
How do I confirm my exact model?
Match the MLFB on your nameplate: 1FK7043-4CH71-1BG0.OMS SERVOMOT.Product family: SYNCHRONOUS MOTOR 1FK7-HD 3.SIMOTICS S Synchronous motor 1FK7-HD PN=1.2kW; UDC=600V M0=3.5Nm (100K); NN=4500rpm; Naturally cooled FRAME SIZE IMB 5 (IM V1, IM V3) FLANGE 1 POWER CONNECTOR ROTATABLE ABSOLUTE ENCODER SINGLETURN ...
