CNC Controllers

Showing 1681 - 1704 of 2142 products

$1,665.69

In stock, 11 units

Product
Article Number (Market Facing Number)	6FC52030AF000AA1 \| 6FC52030AF000AA1
Product Description	**spare part** SINUMERIK operator panel front OP 010, 10.4" TFT (640x 480) with membrane keys accessory (spare part): 6FC5248-0AF00-0AA0 SINUMERIK operator panel front without LCD unit for SINUMERIK OP 010 6FC5203-0AF00-0AA1 6FC5203-0AF00-0AA0
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	4025515019312
UPC	Not available
Commodity Code	85371098
LKZ_FDB/ CatalogID	NC62
Product Group	3512
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	9.921 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5114-0AB01-0AA0 Siemens

$783.98

Only 4 units left

Product
Article Number (Market Facing Number)	6FC51140AB010AA0
Product Description	SINUMERIK 840C/ 840CE 115-230V AC POWER SUPPLY FRACO FOR CENTRAL UNIT
Product family	Not available
Product Lifecycle (PLM)	PM500:Discontinued Product or end of PLM & Support
Additional Product Information
EAN	Not available
UPC	Not available
Commodity Code	Not available
LKZ_FDB/ CatalogID	NC.840CE
Product Group	Not available
Group Code	R211
Country of origin	Not available
SCIP number	Not available
Delivery information
Net Weight (lb)	Not available
Package size unit of measure	Not available
Packaging Quantity	Not available

Siemens 6FC5247-0AA00-0AA2 Siemens

$1,835.22

In stock, 16 units

Product
Article Number (Market Facing Number)	6FC52470AA000AA2
Product Description	SINUMERIK 840D/DE NCU BOX FOR INSTALLATION OF NCU 561.2/561.3/561.4/ 571/571.2/571.3/571.4/ 572/572.2/572.3/573.4/ 573.2/573.3/573.4/573.5 WITH POWER UNIT, BATTERY AND FAN
Product family	Not available
Product Lifecycle (PLM)	PM500:Discontinued Product or end of PLM & Support
Additional Product Information
EAN	Not available
UPC	Not available
Commodity Code	Not available
LKZ_FDB/ CatalogID	NC60
Product Group	Not available
Group Code	R211
Country of origin	Not available
SCIP number	Not available
Delivery information
Net Weight (lb)	7.055 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5372-0AA30-0AA1 Siemens

$14,038.65

Only 9 units left

Product
Article Number (Market Facing Number)	6FC53720AA300AA1 \| 6FC53720AA300AA1
Product Description	spare part SINUMERIK 840D sl NCU720.3PN with PLC 317-3PN/DP user memory: CNC: 3 MB; PLC: 512 KB internal heat dissipation
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	4042948665336
UPC	887621043636
Commodity Code	85371010
LKZ_FDB/ CatalogID	NC61
Product Group	5706
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	9.559 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5303-1AF03-0AH0 Siemens

$0.00

Sold Out

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

Siemens 6FC5110-0AA02-0AA0 Siemens

$0.00

Sold Out

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

Siemens 6FC3781-0AA-Z Siemens

$0.00

Sold Out

Buy the Siemens 6FC3781-0AA-Z - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC3781-0AA-Z is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5110-0BB04-0AA1 Siemens

$2,735.95

Only 9 units left

Product
Article Number (Market Facing Number)	6FC51100BB040AA1 \| 6FC51100BB040AA1
Product Description	**spare part** SINUMERIK 840C/840CE NC-CPU 486DX4 8 MB RAM
Product family	Not available
Product Lifecycle (PLM)	PM490:Start of final year of support
Additional Product Information
EAN	4025515016694
UPC	Not available
Commodity Code	85371010
LKZ_FDB/ CatalogID	NC.840CE
Product Group	9302
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	1.343 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5248-0AF20-1AA0 Siemens

$493.74

Only 5 units left

Buy the Siemens 6FC5248-0AF20-1AA0 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5248-0AF20-1AA0 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5370-6AA30-0AA0 Siemens

$3,763.00

Only 3 units left

Buy the Siemens 6FC5370-6AA30-0AA0 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5370-6AA30-0AA0 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC9320-3MG21 Siemens

$0.00

Sold Out

Buy the Siemens 6FC9320-3MG21 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC9320-3MG21 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5210-0DA00- Siemens

$1,947.36

Only 4 units left

Buy the Siemens 6FC5210-0DA00- - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5210-0DA00- is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5203-0AB10-0AA1 Siemens

$7,347.82

Only 8 units left

Product
Article Number (Market Facing Number)	6FC52030AB100AA1 \| 6FC52030AB100AA1
Product Description	**spare part** SINUMERIK FM NC/810D/DE/840D/DE flat operator panel OP 031 19" operator panel with flat screen 24 cm / 9.5 "monochrome standard layout
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	4025515006527
UPC	887621195557
Commodity Code	85371098
LKZ_FDB/ CatalogID	NC60E
Product Group	5705
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	12.769 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC3551-1AC-Z Siemens

$1,338.47

Only 4 units left

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

Siemens 6FC5447-00AA0-0AA1 Siemens

$3,768.23

Only 3 units left

Buy the Siemens 6FC5447-00AA0-0AA1 - a genuine Siemens industrial automation component engineered for reliable performance in demanding manufacturing and process control environments. The Siemens 6FC5447-00AA0-0AA1 is a direct drop-in replacement for existing installations and ships ready for integration.

Siemens 6FC5154-0AX01-1AE0 Siemens

$1,461.17

Only 1 unit left

Product
Article Number (Market Facing Number)	6FC51540AX011AE0
Product Description	SINUMERIK 840C/840CE SYSTEM SW FOR CP 231A EPROM
Product family	Not available
Product Lifecycle (PLM)	PM500:Discontinued Product or end of PLM & Support
Additional Product Information
EAN	Not available
UPC	Not available
Commodity Code	85423255
LKZ_FDB/ CatalogID	NC.840CE
Product Group	9302
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	0.141 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC3251-1AC-Z Siemens

$3,771.93

Only 4 units left

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

Siemens 6FC5373-0AA01-0AA2 Siemens

$8,851.47

Only 3 units left

Product
Article Number (Market Facing Number)	6FC53730AA010AA2 \| 6FC53730AA010AA2
Product Description	spare part SINUMERIK 840D sl CNC hardware NCU 730.2 PN with PLC 319-3PN/DP user memory: CNC: 3 MB; PLC: 512 KB internal heat dissipation
Product family	Not available
Product Lifecycle (PLM)	PM410:Product cancellation
Additional Product Information
EAN	Not available
UPC	040892745238
Commodity Code	85371010
LKZ_FDB/ CatalogID	NC61E
Product Group	5706
Group Code	R2S1
Country of origin	Germany
SCIP number	9e6c44ba-91a2-4c54-8661-bae1b688a059
Delivery information
Net Weight (lb)	7.937 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5373-0AA30-0AA0 Siemens

$19,777.50

Only 2 units left

Product
Article Number (Market Facing Number)	6FC53730AA300AA0 \| 6FC53730AA300AA0
Product Description	spare part SINUMERIK 840D sl NCU730.3PN with PLC 317-3PN/DP user memory: CNC: 3 MB; PLC: 512 KB internal heat dissipation
Product family	Not available
Product Lifecycle (PLM)	PM490:Start of final year of support
Additional Product Information
EAN	Not available
UPC	887621150853
Commodity Code	85371010
LKZ_FDB/ CatalogID	NC62E
Product Group	5706
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	9.259 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5111-0CA21-0AA0 Siemens

$1,884.99

Only 1 unit left

Product
Article Number (Market Facing Number)	6FC51110CA210AA0
Product Description	SINUMERIK 840C/ 840CE DMP 32 INPUTS 24V (FOR 4-WIRE CONNECTION)
Product family	Not available
Product Lifecycle (PLM)	PM500:Discontinued Product or end of PLM & Support
Additional Product Information
EAN	Not available
UPC	Not available
Commodity Code	Not available
LKZ_FDB/ CatalogID	NC.840CE
Product Group	Not available
Group Code	R211
Country of origin	Not available
SCIP number	Not available
Delivery information
Net Weight (lb)	1.146 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5247-0AF08-0AA1 Siemens

$1,907.42

Only 8 units left

Product
Article Number (Market Facing Number)	6FC52470AF080AA1 \| 6FC52470AF080AA1
Product Description	**spare part** SINUMERIK hard disk 10 GB with support plate and damper for PCU 50/70 333/500/566/1200 MHz
Product family	Not available
Product Lifecycle (PLM)	PM490:Start of final year of support
Additional Product Information
EAN	4025515019923
UPC	Not available
Commodity Code	85389099
LKZ_FDB/ CatalogID	NC60E
Product Group	3512
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	2.205 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5851-1YG45-4YA0 Siemens

$0.00

Sold Out

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

Siemens 6FC5210-0DF03-0AA0 Siemens

$5,466.97

Only 1 unit left

Product
Article Number (Market Facing Number)	6FC52100DF030AA0
Product Description	spare part SINUMERIK PCU 50 Pentium II/500 MHz/128 MB 24 V DC, with Windows 2000 (OS: SINUMERIK 840D BS 004)
Product family	Not available
Product Lifecycle (PLM)	PM490:Start of final year of support
Additional Product Information
EAN	Not available
UPC	Not available
Commodity Code	85371010
LKZ_FDB/ CatalogID	NC60E
Product Group	5705
Group Code	R2S1
Country of origin	Germany
SCIP number	Not available
Delivery information
Net Weight (lb)	13.228 lb
Package size unit of measure	Not available
Packaging Quantity	1

Siemens 6FC5203-0AF21-0AA1 Siemens

$2,247.50

Only 7 units left

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

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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.