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6FC5357-0BB25-0AA0 Siemens
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The Siemens 6FC5357-0BB25-0AA0 is the NCU 572.5 numerical control unit designed for SINUMERIK 840D/DE CNC systems. It incorporates a Celeron-based processor at 650 MHz and supports both NC and PLC tasks, with user-available memory in both domains. As a spare-part module, it enables control computation and PLC functionality within CNC environments. It is intended for maintenance replacement to restore system operations in machining centers, milling machines, or turning centers. This part number appears in Siemens' final support phase since November 16, 2020.
Best Suited For
- Replacement of failed NCU in SINUMERIK 840D/DE CNC systems
- Maintenance on-system for CNC and PLC operations
- Temporary retrofit pending upgrade to newer NCU platforms
- Service spare in machine tool repair inventory