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Can't Find Spare Parts for Siemens 810D/840D? We Get You!

JUN. 23, 2025

If your equipment is still using Siemens 810D or 840D system, don't feel outdated, because there are still a lot of factories are using these two classic CNC. They used to be the benchmark in the industry, stable performance, high machining accuracy, with more than ten years are still in service.

The problem is - Siemens has long since discontinued these two controllers, and original spare parts are getting harder and harder to find.

Can't Find Spare Parts for Siemens 810D/840D? We Get You!
Why Is It so Hard to Get Spare Parts for 810D/840D?
Because Siemens has long since shifted its focus to new systems, such as the 828D and SINUMERIK ONE. The 810D and 840D are no longer officially produced or supported. 

It is almost impossible to find brand-new original parts on the market, because Siemens has long stopped producing them. The stock on the agent's side is also basically sold out. Siemens now usually suggests upgrading the whole system. But we all know that upgrading not only costs a lot of money, but also to change the program, change the wiring, debugging time is also very long. Often, it's just a matter of replacing a key component, such as a motherboard or a drive, and the machine will be back to normal - which is much more cost-effective than replacing the whole thing.

As a result, if something goes wrong with the equipment, it can't be repaired or replaced, and production can only stop.
 
Which Siemens Parts Are the Most Difficult to Buy Nowadays?
There are some parts with model numbers such as 6FC5348-0AA02-0AA0, 6SL3040-0NB00-0AA0, 6FC5411-0AA00-0AA0
The following parts are the ones we receive the most inquiries from customers:

* NCU main control board.
* Operation panel (OP010, OP015, OP031).
* Power supply module, servo amplifier.
* CF card, memory module.
* Encoder, spindle feedback module.

Many of them fail because of long time use, temperature-induced aging, capacitor leakage, poor interface contact, etc. But as long as you can find the right parts, the equipment can still continue to run.
 
What Can Songwei Do for You?
The services we offer at Songwei include:

- All kinds of Siemens 810D/840D spare parts (new/used/refurbished).
- Pre-shipment inspection to ensure availability.
- Professional repair service to save cost.
- Remote support by technical engineers.
- All products include warranty, no worry after sale.

We have our own inventory, common parts are basically in stock. If you can't find the parts, we can also help you to transfer the goods globally, reliable and safe.
 
How to Tell if You Are Buying Reliable Spare Parts?
Nowadays, there are a lot of refurbished parts and dismantled parts in the market, and the quality varies. We suggest you pay attention to these when you choose a supplier:

* If they test the parts.
* If they provide installation guidance or technical support.
* If there is a warranty.
* If they can provide maintenance solution instead of just selling parts.

Songwei does not just sell parts, we are a full-process technical service provider to help you solve the problem completely.
 
Customer Case:
Saving tens of thousands of dollars by replacing a motherboard.

We have a German customer, a machining center suddenly went down, and the 840D system main control board was burned. Siemens quoted a price of more than $25,000 for a complete system upgrade. The customer found us, and we sent a tested NCU motherboard to him in 4 days, and it worked as soon as it was installed, and the equipment was back in operation within a week, which saved the customer money and worry.
 
Looking for Siemens 810D or 840D Spare Parts?
Instead of asking one supplier after another, just contact us directly:

* Send us the model number you are looking for.
* Send us a couple of photos of what you're looking for.
* We'll give you a quote, test lead time, shipping time, all in one place.

A Final Reminder

Although the Siemens 810D and 840D have been discontinued, many of the units are still in good condition, so there's no need to rush to change systems. As long as you find the right parts and keep up with the maintenance, the machine can still run stably for several years.

Songwei is a reliable, professional and fast delivery partner to help you extend the life of your equipment. If you can't find the right spare parts, you can find us, a one-stop solution.

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