CNC Controllers

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Buy the Siemens 6FC3478-2EF20 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC3478-2EF20 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5370-7AA00-0AA0 Siemens

€7.097,95

Only 2 units left

Product
Article Number (Market Facing Number)	6FC53707AA000AA0 \| 6FC53707AA000AA0
Product Description	*spare part* SINUMERIK 828D CNC hardware PPU 281.1 horizontal
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	Not available
UPC	040892745115
Commodity Code	85371010
LKZ_FDB/ CatalogID	NC82
Product Group	5704
Group Code	R2S1
Country of origin	China
SCIP number	Not available
Delivery information
Net Weight (lb)	9.921 lb
Package size unit of measure	Inch
Packaging Quantity	1

Siemens 6FC5303-0AF50-4BB0 Siemens

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Buy the Siemens 6FC5303-0AF50-4BB0 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5303-0AF50-4BB0 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC3981-7HN10 Siemens

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

Siemens 6FC3181-3EF Siemens

€571,95

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Siemens 6FC5251-0AB07-0AA0 Siemens

€0,00

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Buy the Siemens 6FC5251-0AB07-0AA0 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5251-0AB07-0AA0 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5253-6BX10-4AF0 Siemens

€4.298,95

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Product
Article Number (Market Facing Number)	6FC52536BX104AF0 \| 6FC52536BX104AF0
Product Description	SINUMERIK 810D/840D HMI ADVANCED SOFTWARE FOR PCU 6 LANGUAGES (EN, GER, FR, IT, SP, CH-SIMPL); SW VERSION 6.4 ON PCU HARD DISK SINGLE LICENSE
Product family	Not available
Product Lifecycle (PLM)	PM500:Discontinued Product or end of PLM & Support
Additional Product Information
EAN	Not available
UPC	040892741131
Commodity Code	84717050
LKZ_FDB/ CatalogID	NC60E
Product Group	5705
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	0.022 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5247-0AA02-1AA0 Siemens

€654,95

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Product
Article Number (Market Facing Number)	6FC52470AA021AA0 \| 6FC52470AA021AA0
Product Description	**spare part** SINUMERIK FM NC/810D/DE/840D/DE PCI / ISA adapter for holding 2 PCI or ISA plug-in cards with 2/3 overall length for MMC103
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	4025515017127
UPC	887621195656
Commodity Code	85389091
LKZ_FDB/ CatalogID	NC60E
Product Group	5705
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	1.653 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5370-8AA30-0WA1 Siemens

€2.511,95

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Buy the Siemens 6FC5370-8AA30-0WA1 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5370-8AA30-0WA1 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5247-0AF22-0AA0 Siemens

€2.404,95

Only 7 units left

Product
Article Number (Market Facing Number)	6FC52470AF220AA0 \| 6FC52470AF220AA0
Product Description	**spare part** SINUMERIK operator panel front video link receiver for distributed setup up
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	4025515019947
UPC	662643044195
Commodity Code	85371098
LKZ_FDB/ CatalogID	NC60E
Product Group	3512
Group Code	R2S1
Country of origin	Germany
SCIP number	1c9f2ad7-1f19-4192-a6b0-d2444a4d878f
Delivery information
Net Weight (lb)	4.409 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC9198-2CB00 Siemens

€0,00

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Buy the Siemens 6FC9198-2CB00 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC9198-2CB00 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC3491-2GC-Z Siemens

€4.297,95

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

Siemens 6FC5303-1AF02-0AK0 Siemens

€3.066,95

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Buy the Siemens 6FC5303-1AF02-0AK0 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5303-1AF02-0AK0 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5270-4BX30-4AH3 Siemens

€546,95

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

Siemens 6FC3985-7AU30 Siemens

€628,95

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

Siemens 6FC5303-1AF00-1AA1 Siemens

€1.388,95

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Buy the Siemens 6FC5303-1AF00-1AA1 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5303-1AF00-1AA1 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5248-0AF20-2AA0 Siemens

€745,95

Only 5 units left

Product
Article Number (Market Facing Number)	6FC52480AF202AA0 \| 6FC52480AF202AA0
Product Description	SINUMERIK 810D/840D MOUNTING BRACKET FOR MOUNTING A PCU, VIDEO LINK RECEIVER OR TCU BEHIND THE OP PANEL FRONT 1 SET = 2 BRACKETS
Product family	Not available
Product Lifecycle (PLM)	PM400:Announcement of product phase-out
Additional Product Information
EAN	4025515017240
UPC	662643044263
Commodity Code	85389099
LKZ_FDB/ CatalogID	NC62
Product Group	X0HH
Group Code	R211
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	0.992 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC9320-3LS00 Siemens

€1.344,95

Only 4 units left

Buy the Siemens 6FC9320-3LS00 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC9320-3LS00 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC3911-2AC-Z Siemens

€683,95

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

Siemens 6FC5373-0AA00-0AA2 Siemens

€13.695,95

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

Indramat DSM2 Indramat

€441,95

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PLC Direct is not an authorized distributor. We offer a broad range of in-stock products with minimal lead time.

GE Fanuc A02B-0247-B542 GE Fanuc

€6.280,95

Only 4 units left

Buy the FANUC A02B-0247-B542 - a genuine FANUC industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The FANUC A02B-0247-B542 is a direct drop-in replacement for existing installations and ships ready for integration.

GE Fanuc A02B-0166-C261 GE Fanuc

€1.538,95

Only 8 units left

Buy the FANUC A02B-0166-C261 - a genuine FANUC industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The FANUC A02B-0166-C261 is a direct drop-in replacement for existing installations and ships ready for integration.

GE Fanuc A02B-0323-H071 GE Fanuc

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Buy the FANUC A02B-0323-H071 - a genuine FANUC industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The FANUC A02B-0323-H071 is a direct drop-in replacement for existing installations and ships ready for integration.

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CNC controllers are the central hardware units that govern all axis motion, PLC sequencing, and operator interaction for CNC machine tools, and the failure of a controller can bring an entire machining operation to a standstill. Sourcing a compatible replacement CNC controller for an installed system requires matching not only the brand and model but also the specific generation, axis configuration, and communication architecture. PLC Direct supplies surplus sealed, refurbished, and used CNC controllers for installed Siemens SINUMERIK and Fanuc CNC machining systems.

Where Are CNC Controllers Used in Industrial Environments?

CNC controllers are used wherever machine tools require numerically controlled, multi-axis motion for cutting, forming, or finishing operations, from standalone turning centers to large multi-axis machining cells. Machine tool controllers from Siemens SINUMERIK and Fanuc CNC Series platforms are found across a wide range of metalworking and precision manufacturing environments. Facilities and operations that depend on CNC controllers include:

Metal cutting and machining centers using SINUMERIK CNC controls or Fanuc CNC systems to govern coordinated multi-axis milling, turning, drilling, and grinding operations.

Automotive manufacturing plants running high-volume CNC machining lines where replacement machine tool controllers must match the installed platform generation.

Aerospace fabrication operations dependent on tight-tolerance CNC machining, where CNC controller continuity is critical to maintaining process specifications.

Tool and die shops maintaining older SINUMERIK 828D or Fanuc Series 0i installations, where controller replacement is the only alternative to full machine decommissioning.

Industrial production facilities managing multi-brand CNC fleets requiring replacement CNC controls across both Siemens and Fanuc platforms within the same operation.

When a CNC controller fails in a production environment, the priority is sourcing a compatible replacement that restores the machine to its original operating specification.

Which Brands of CNC Controllers Does PLC Direct Stock?

PLC Direct carries CNC controllers across Siemens and Fanuc platforms, covering current-generation and legacy machine tool controllers for installed CNC machining systems.

Siemens SINUMERIK 840D sl CNC Controls: Siemens SINUMERIK 840D sl CNC controllers, including NCU 710, NCU 720, and NCU 730 configurations, are stocked for replacement in installed SINUMERIK 840D sl machining systems across manufacturing and fabrication environments.

Siemens SINUMERIK 828D CNC Controls: The SINUMERIK 828D is a compact panel-based CNC controller designed for turning and milling applications, and hardware for installed 828D systems is available for replacement and lifecycle support.

Siemens SINUMERIK ONE CNC Controls: SINUMERIK ONE NCU hardware is available for replacement in current-generation Siemens CNC machining environments requiring controller-level maintenance.

Fanuc Series CNC Controls: Fanuc CNC controllers, including Series 0i, 30i, 31i, and 35i machine tool controllers, are stocked for replacement and maintenance in installed Fanuc CNC milling, turning, grinding, and multi-axis machining systems.

All CNC controllers listed above are available as surplus sealed, refurbished, or used, providing condition-grade options to match both budget and application requirements.

What Should You Know Before Ordering CNC Controllers?

Hardware condition options: CNC controllers from PLC Direct are supplied as surplus sealed, refurbished, or used. Surplus sealed units are factory-sealed and undeployed; refurbished units have been tested and restored to operational condition; used controllers are pulled from service and sold as-is under the standard PLC Direct warranty.

Compatibility and part identification: CNC controllers are generation-specific and axis-configuration-specific. For Siemens SINUMERIK hardware, confirm the exact generation (SINUMERIK 828D, 840D sl, or SINUMERIK ONE), the NCU variant, and the PLC integration type before ordering, as these are not interchangeable across generations. For Fanuc CNC controls, confirm the Series generation (0i, 30i, 31i, or 35i) and the axis count. In both cases, the part number from the installed controller is the most reliable reference for sourcing a compatible replacement.

Warranty: All CNC controllers purchased from PLC Direct carry a standard 1-year PLC Direct warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products.

PLC Direct supplies CNC controllers for replacement and maintenance purposes and does not provide system design, programming, or integration services.

Frequently Asked Questions

PLC Direct stocks CNC controllers for installed Siemens SINUMERIK and Fanuc CNC systems, including SINUMERIK 828D, 840D sl, and SINUMERIK ONE machine tool controllers, and Fanuc Series 0i, 30i, 31i, and 35i CNC controls. Hardware is available as surplus sealed, refurbished, or used to support replacement and lifecycle maintenance of installed CNC machining systems.

Confirm the CNC controller brand and generation from the installed unit, for example, Siemens SINUMERIK 840D sl NCU 720 or Fanuc Series 30i, and locate the part number from the controller housing or documentation. Search by part number on plc-direct.com or contact PLC Direct directly to confirm availability of the specific machine tool controller needed.

No. Fanuc Series CNC generations (0i, 30i, 31i, 35i) differ in axis capacity, processing architecture, and I/O configuration. A replacement Fanuc CNC controller must match the installed Series generation and axis count to restore the machine to its original specification. Always confirm the exact Series designation and part number before ordering.

The SINUMERIK 828D is a compact, panel-integrated CNC controller designed for standard turning and milling machines, with the control hardware integrated into the operator panel. The SINUMERIK 840D sl is a modular, high-performance platform based on separate NCU and operator panel hardware, suited to complex multi-axis machining, grinding, and high-speed cutting applications. The two generations are architecturally distinct, and replacement hardware is not interchangeable between them.

All CNC controllers purchased from PLC Direct are covered by a 1-year PLC Direct warranty applicable to surplus sealed, refurbished, and used products, covering defects and functionality. PLC Direct does not offer programming, configuration, or integration services.