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Siemens SINUMERIK 840D/DE NCU 573.5 industrial control unit

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Siemens 6FC5357-0BB35-0AA0

by Siemens

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OverviewThe Siemens 6FC5357-0BB35-0AA0 is a high-performance SINUMERIK 840D/DE NCU 573.5 unit, specifically designed for advanced Computer Numerical Control (CNC) applications. This crucial industrial automation component delivers exceptional precision and reliability for complex machining tasks. Featuring a powerful 933 MHz processor and 64 MB of total memory, the 6FC5357-0BB35-0AA0 ensures smooth operation and efficient processing of intricate numerical control programs. It also includes dedicated 3 MB NC (Numerical Control) memory and 128 KB PLC (Programmable Logic Controller) memory, optimizing performance for both control logic and motion commands.Built with future growth in mind, this unit supports PROFIBUS DP communication, allowing for robust and high-speed data exchange within your industrial network. While this model has been discontinued without a direct replacement, its reputation for performance and accuracy remains. For those looking to maintain or upgrade existing SINUMERIK 840D/DE systems, understanding the capabilities of the 6FC5357-0BB35-0AA0 is essential. It stands as a benchmark in CNC technology, offering the stability and processing power required for demanding manufacturing environments.Key Features High-Speed Processor: Benefit from rapid data processing and command execution with a 933 MHz processor, ensuring responsive and efficient CNC operations. Comprehensive Memory Configuration: Equipped with 64 MB of total memory, including 3 MB dedicated NC memory and 128 KB PLC memory, providing ample space for complex programs and control logic. Advanced CNC System Compatibility: Integrates seamlessly with SINUMERIK 840D/DE systems, acting as a vital component for sophisticated machining control. PROFIBUS DP Communication Readiness: Prepared for PROFIBUS DP, facilitating dependable and high-speed communication within integrated industrial automation systems. Diverse Application Support: Capable of managing a wide array of CNC machining applications, including intricate milling, precise turning, and accurate grinding operations. Durable Industrial Construction: Manufactured to endure the demanding conditions of industrial settings, ensuring long-term reliability and consistent performance. Technical Specifications Product Type: NCU (Numerical Control Unit) Model Number: NCU 573.5 Article Number: 6FC5357-0BB35-0AA0 Processor Speed: 933 MHz Total Memory: 64 MB NC Memory: 3 MB PLC Memory: 128 KB Communication Interface: Prepared for PROFIBUS DP Dimensions: Standard for SINUMERIK 840D/DE series Weight: Approximately 2.5 kg Operating Temperature: 0°C to 55°C Storage Temperature: -20°C to +70°C Relative Humidity: 5% to 95% (non-condensing) Protection Rating: IP20 Certifications: CE, UL Applications Precision CNC Machining: Optimal for controlling intricate machining processes in demanding sectors such as automotive, aerospace, and general manufacturing, where accuracy and repeatability are crucial. Multi-Axis Control Systems: Supports advanced multi-axis control, enabling complex movements and simultaneous operations for precise component production. Milling, Turning, and Grinding Operations: Perfectly suited for a broad range of machining processes that demand accurate numerical control and high-performance execution. Industrial Automation Enhancement: Significantly improves automation capabilities in modern production environments, contributing to increased efficiency and reduced human intervention. Robotics and Motion Control Integration: Can be integrated into broader automation frameworks to offer central control for robotic systems and other complex motion control applications. Why Choose This Model?Designed by Siemens, an industry leader in automation, this unit offers robust and dependable operation even in the most challenging industrial environments, ensuring unmatched reliability. The combination of its powerful processor and ample memory delivers optimized performance for your critical operations.Order NowEnhance your industrial automation with the Siemens 6FC5357-0BB35-0AA0. Contact us today to secure this essential component for your CNC systems and experience superior control and efficiency.FAQWhat is the primary function of the Siemens 6FC5357-0BB35-0AA0?The Siemens 6FC5357-0BB35-0AA0 is a SINUMERIK 840D/DE NCU 573.5 unit that serves as a core component for Computer Numerical Control (CNC) applications, providing precise control for complex machining processes.What are the key memory specifications of this NCU?This NCU features 64 MB of total memory, including 3 MB dedicated NC memory and 128 KB dedicated PLC memory, designed to handle complex programs and control logic efficiently.Is this unit compatible with modern industrial communication protocols?Yes, the 6FC5357-0BB35-0AA0 is prepared for PROFIBUS DP communication, allowing for seamless and high-speed data exchange within integrated industrial automation systems.Can this NCU be used for various machining operations?Absolutely. It is well-suited for a diverse array of CNC machining applications, including intricate milling, precise turning, and accurate grinding operations, due to its advanced control capabilities.What industries benefit most from this Siemens NCU?Industries requiring high precision and reliability in their manufacturing processes, such as the automotive, aerospace, and general manufacturing sectors, greatly benefit from this unit's robust capabilities.

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PRODUCT DETAILS

Siemens 6FC5357-0BB35-0AA0

Overview

This is a genuine Siemens component from the Sinumerik CNC Systems family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Siemens catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Siemens automation ecosystem
  • Engineered to integrate inside Sinumerik CNC Systems installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Siemens platform with documented conversion notes for the Sinumerik CNC Systems family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Product Type: NCU (Numerical Control Unit)
  • Model Number: NCU 573.5
  • Article Number: 6FC5357-0BB35-0AA0
  • Processor Speed: 933 MHz
  • Total Memory: 64 MB
  • NC Memory: 3 MB
  • PLC Memory: 128 KB
  • Communication Interface: Prepared for PROFIBUS DP
  • Dimensions: Standard for SINUMERIK 840D/DE series
  • Weight: Approximately 2.5 kg
  • Operating Temperature: 0°C to 55°C
  • Storage Temperature: -20°C to +70°C
  • Relative Humidity: 5% to 95% (non-condensing)
  • Protection Rating: IP20
  • Certifications: CE, UL

Applications

  • Precision CNC Machining: Optimal for controlling intricate machining processes in demanding sectors such as automotive, aerospace, and general manufacturing, where accuracy and repeatability are crucial.
  • Multi-Axis Control Systems: Supports advanced multi-axis control, enabling complex movements and simultaneous operations for precise component production.
  • Milling, Turning, and Grinding Operations: Perfectly suited for a broad range of machining processes that demand accurate numerical control and high-performance execution.
  • Industrial Automation Enhancement: Significantly improves automation capabilities in modern production environments, contributing to increased efficiency and reduced human intervention.
  • Robotics and Motion Control Integration: Can be integrated into broader automation frameworks to offer central control for robotic systems and other complex motion control applications.

Why Choose the 6FC5357-0BB35-0AA0?

Designed by Siemens, an industry leader in automation, this unit offers robust and dependable operation even in the most challenging industrial environments, ensuring unmatched reliability. The combination of its powerful processor and ample memory delivers optimized performance for your critical operations.

Availability & Shipping

  • In stock: 6FC5357-0BB35-0AA0 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 6FC5357-0BB35-0AA0 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Siemens

The Siemens 6FC5357-0BB35-0AA0 is a SINUMERIK 840D/DE NCU 573.5 unit that serves as a core component for Computer Numerical Control (CNC) applications, providing precise control for complex machining processes.

Machine down? We ship parts the same day.

New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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