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Siemens SINUMERIK 840D NCU 572 Control Unit

Name: Siemens 6FC5357-0BA21-1AE0
Brand: Siemens
SKU: 6FC5357-0BA21-1AE0
Availability: InStock

Siemens SINUMERIK 840D NCU 572 CNC Control Unit.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number6FC5357-0BA21-1AE0

Series SINUMERIK 840D

Model NCU 572

Axes/Spindles 5 (Max 8)

NC Memory 1.5 MB

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Response within 1 business hour

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12-month warranty

All units tested

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Same-day dispatch

Order by 2pm CST

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

Supports 5 Axes/Spindles (Expandable to 8) 1.5 MB NC Memory PROFIBUS DP Communication Integrated PLC Memory S7 IM 361 I/O Support Standard Version NCU

Product description

The Siemens SINUMERIK 840D NCU 572 is a standard version Numerical Control Unit (NCU) designed for advanced machine tool control. This unit supports up to 5 axes or spindles, expandable to a maximum of 8. It features 1.5 MB of NC memory for program data and 64 KB of PLC memory (expandable to 192 KB) for logic functions. Communication is handled via PROFIBUS DP, with integrated system software and device bus cable, including a terminating connector.

This NCU is a core component for complex CNC applications, enabling precise control of multi-axis machining operations in industries such as automotive, aerospace, and general manufacturing. Its PROFIBUS DP interface allows for seamless integration with other automation components like I/O modules (S7 IM 361) and drives.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens SINUMERIK 840D NCU 572. We provide reliable and cost-effective solutions to maintain and enhance your manufacturing capabilities. Source your CNC control units from Stanlo for quality and value.

Technical specifications

Series	SINUMERIK 840D
Model	NCU 572
Axes/Spindles	5 (Max 8)
NC Memory	1.5 MB
PLC Memory	64 KB (Max 192 KB)
Communication	PROFIBUS DP
I/O Interface	S7 IM 361 compatible

Common applications

CNC Machining Centers

Lathes

Milling Machines

Grinding Machines

High-Precision Manufacturing

Automation Systems

Compatible systems

Siemens SINAMICS Drives Siemens SIMATIC I/O Modules (S7 IM 361) PROFIBUS DP Master Systems Machine Tool Controllers

Also known as

SINUMERIK NCU Siemens CNC Controller 840D NCU 572

Replaces / compatible with

This NCU replaces older versions within the SINUMERIK 840D family and is compatible with Siemens drives and I/O modules. Refer to Siemens documentation for migration details.

Technical note

Expert tip

Ensure proper termination of the PROFIBUS DP cable when using the 6FC5357-0BA21-1AE0 to maintain signal integrity and reliable communication.

What happens next?

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Frequently asked questions

What is the maximum number of axes or spindles supported by the Siemens SINUMERIK 840D NCU 572 (6FC5357-0BA21-1AE0)?

The Siemens SINUMERIK 840D NCU 572 (6FC5357-0BA21-1AE0) supports a standard configuration of 5 axes/spindles, with the capability to be expanded to a maximum of 8 axes/spindles.