Siemens 6FC5357-0BB35-0AE0 NCU 573.5 Control Unit Version F
Siemens 6FC5357-0BB35-0AE0 NCU 573.5 Control Unit Version F
1 left in stock
The Siemens 6FC5357-0BB35-0AE0 is an NCU 573.5 (Numerical Control Unit) Version F, a core control component in SINUMERIK 840D sl CNC systems. This unit manages motion control, program execution, and system coordination for multi-axis machine tools. The NCU 573.5 is designed for medium to high-performance machining centers and turning applications, offering fast interpolation and flexible I/O expansion. This unit was removed from a functioning machine and is in good working condition. Also searched as 6FC53570BB350AE0.
Specifications
| Part Number | 6FC5357-0BB35-0AE0 |
| Manufacturer | Siemens |
| Product Line | SINUMERIK 840D sl |
| Unit Type | NCU 573.5 |
| Version | F |
| Included Memory Module | 6FC5250-6BX30-5AH0 |
| Condition | Used-Tested |
| Warranty | 14–30 days |
Condition & testing
This NCU 573.5 unit was removed from a working machine and is in good working condition. It shows typical signs of prior industrial use, including minor cosmetic wear on the housing and potential rack-mount scuffing. All electrical and communication interfaces are intact. The unit has been powered and confirmed operational prior to removal.
Compatibility
Compatible with SINUMERIK 840D sl CNC systems requiring NCU 573.5 control units. Verify firmware version compatibility with your machine configuration before installation.
What's included
NCU 573.5 control unit (6FC5357-0BB35-0AE0), memory module (6FC5250-6BX30-5AH0)
Compatible & Related
Compatibility notice: Part numbers are listed for identification only. Always confirm the exact part number and revision match your equipment before ordering.
Condition disclosure: Unless stated as new, items are used or refurbished and may show cosmetic signs of prior use. Functional condition is described above.
Independent reseller: Samonde is an independent reseller and is not affiliated with, authorized by, or endorsed by the original manufacturer.
Installation warning: Industrial automation components must be installed and commissioned by qualified personnel. Samonde accepts no liability for damage or injury resulting from incorrect installation or use.

FAQs
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We accept all major credit cards (Visa, Mastercard, American Express), PayPal, and bank transfers for B2B orders. For large industrial orders, we also offer invoice payment with NET-30 terms for verified business customers.
Are the parts on your website tested and genuine?
Yes. Every part sold by Samonde is professionally tested by our technicians in Tallinn before shipping. We source directly from decommissioned industrial equipment, authorized distributors, and certified surplus stock. Each item comes with a functionality warranty.
Do you offer warranties on industrial spare parts?
Absolutely. All parts come with a minimum 14-30 day warranty. Many items, especially Siemens and Heidenhain components may have include extended 90-day coverage (depends on the parts). If a part fails during the warranty period, we offer replacement or full refund.
Can you source a part that is out of stock?
Yes. If you need a specific Siemens, Heidenhain, Fanuc, or other industrial part that is currently out of stock, contact us with the part number. Our sourcing team across Europe can usually locate hard-to-find automation components within 5-10 business days.
How do I know I'm ordering the correct part for my machine?
Each product listing includes the exact manufacturer part number (MPN), compatibility notes, and photos of the actual item. If you are unsure, send us your machine model and part number via the Contact page or WhatsApp, and our engineers will verify compatibility before you purchase.
Do you ship internationally outside the EU?
Yes. Samonde ships worldwide from our EU warehouse. We offer UPS and DHL Express and standard freight options to North America, Asia, Middle East, and South America. All shipments include tracking and customs documentation.
Siemens 6FC5357-0BB35-0AE0 NCU 573.5 Control Unit Version F