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840d Board

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Overview

Product sourcing insights & recommendations

Alibaba.com
Sepmo
29 来源

The phrase "840D board" primarily refers to the core components of the Siemens SINUMERIK 840D CNC system, specifically the NCU (Numerical Control Unit) and PLC boards. This product line has been an industry benchmark for premium machine tools for over 15 years, but it is currently undergoing a significant market transition.

Product Definition & Market Positioning

The 840D system (and its successor 840D sl) is positioned as a premium-tier CNC solution for modular and complex machine concepts. SiemensIndex-Group It is widely used in high-precision industries such as aerospace, medical, and e-mobility due to its open architecture and high performance in 5-axis milling and turning. SiemensMachinetoolproducts

Key Market Trends & Insights (2026 Perspective)

* Transition to "Digital Native" Systems: Siemens is actively phasing out the SINUMERIK 840D sl in favor of the SINUMERIK ONE. The newer system leverages "digital twin" technology to bridge virtual and physical manufacturing more effectively. SiemensMastercontrols

* Spare Parts Phase (10-Year Guarantee): The SINUMERIK 840D was officially discontinued in 2024. However, Siemens has committed to providing spare parts (including NCU and PLC boards) for 10 years (until 2034), shifting the market focus from new installations to maintenance and retrofitting. SiemensSiemens

* B2B Supply Dynamics: There is a robust secondary and spare-parts market on platforms like Alibaba.com.

* Pricing: PLC and control boards range significantly from $100 to $6,000+, depending on the specific model (e.g., NCU 573.5 vs. standard PLC boards). AlibabaAlibaba

* Supplier Landscape: Many verified suppliers in industrial hubs like Xiamen and Shanghai specialize in used, tested, or new-old-stock components with warranties. AlibabaAlibaba

Sourcing Overview

The current market for 840D boards is highly focused on replacement and repair. Suppliers often offer "Tested OK" used parts with a 12-month warranty to cater to factories maintaining older machine tool fleets. Alibaba

Sinumerik 840d Ncu Board

Products · 2 lists

Brand New 6FC5357-0BB33-0AE2 NCU Board SINUMERIK 840D/DE NCU573.3 PENTIUM III

Brand New 6FC5357-0BB33-0AE2 NCU Board SINUMERIK 840D/DE NCU573.3 PENTIUM III

$3,000-6,0005.0(771)
MOQ: 1 piece
NCU boardSinumerik 840D21% reorder rate≤1h response time
Oriental Shanghai Industries Co., Ltd.Oriental Shanghai Industries Co., Ltd.🇨🇳CN1 yr
6FC5357-0BB34-0AA0 NCU 573.4 Control Board With 6FC5250-6BX30-5AH0 PC Card for SINUMERIK 840D CNC PLC Automation System

6FC5357-0BB34-0AA0 NCU 573.4 Control Board With 6FC5250-6BX30-5AH0 PC Card for SINUMERIK 840D CNC PLC Automation System

$3,198-6,3964.9(53)
MOQ: 1 piece
NCU boardSinumerik 840D50+ store reviews16% reorder rate≤1h response time
Shanghai Anxi Import & Export Co., Ltd.Shanghai Anxi Import & Export Co., Ltd.verified🇨🇳CN2 yrs
Industrial CNC NCU Module Board 6FC5357-0BB25-0AA0 Processor Unit

Industrial CNC NCU Module Board 6FC5357-0BB25-0AA0 Processor Unit

$3,047.89-3,836.835.0(355)
MOQ: 1 piece
NCU boardSinumerik 840D
MM Shanghai Industries Co., Ltd.MM Shanghai Industries Co., Ltd.verified🇨🇳CN1 yr
High Quality 6FC5357-0BB15-0AA0/6FC5357-0BB15-0AB0 NCU Module CNC Spare Parts for SINUMERIK 840D/DE System (In Stock)

High Quality 6FC5357-0BB15-0AA0/6FC5357-0BB15-0AB0 NCU Module CNC Spare Parts for SINUMERIK 840D/DE System (In Stock)

$179.40-5,785.654.7(720)
MOQ: 1 bag
NCU boardSinumerik 840D38% reorder rate≤2h response time
Sino-Shanghai Oriental ManufacturingSino-Shanghai Oriental Manufacturingverified🇨🇳CN1 yr
New and Original SINUMERIK 840D/DE CNC-HARDWARE NCU 572.5B 6FC5357-0BB25-0AB0

New and Original SINUMERIK 840D/DE CNC-HARDWARE NCU 572.5B 6FC5357-0BB25-0AB0

$6,000-7,8884.7(301)
MOQ: 1 piece
NCU boardSinumerik 840D1100+ store reviews11% reorder rate≤4h response time
Shanghai Fujian Import & Export Co., Ltd.Shanghai Fujian Import & Export Co., Ltd.🇨🇳CN13 yrs
New Original SIEMENS 6SN1118-0NH11-0AA1 CNC SINUMERIK 840D Control Board in Stock for Electrical Equipment

New Original SIEMENS 6SN1118-0NH11-0AA1 CNC SINUMERIK 840D Control Board in Stock for Electrical Equipment

$8005.0(157)
MOQ: 1 piece
NCU boardSinumerik 840D900+ store reviews13% reorder rate≤2h response time
Shanghai Yunnan International GroupShanghai Yunnan International Groupverified🇨🇳CN9 yrs
Sinumerik / 6fc5357-0bb15-wbr0aa0 840d/de Ncu 571.5 400mhz Version: New Original Industrial Automation Programmable Control

Sinumerik / 6fc5357-0bb15-wbr0aa0 840d/de Ncu 571.5 400mhz Version: New Original Industrial Automation Programmable Control

$995.0(151)
MOQ: 1 piece
NCU boardSinumerik 840D9% reorder rate≤2h response time
Shanghai Hangzhou Trade Co., LimitedShanghai Hangzhou Trade Co., Limited🇨🇳CN1 yr
6FC5357-0BB15-0AA0 SINUMERIK NCU 571.3 Main Control Board CNC CPU Module, Suitable for 840D Digital Control System

6FC5357-0BB15-0AA0 SINUMERIK NCU 571.3 Main Control Board CNC CPU Module, Suitable for 840D Digital Control System

$1,210-1,5854.8(218)
MOQ: 1 piece
NCU boardSinumerik 840D26% reorder rate≤2h response time
Shanghai Yunnan Trade Co., LimitedShanghai Yunnan Trade Co., Limitedverified🇨🇳CN1 yr
Hot Sale Original Sinumerik 810DE CCU1 Module 6FC5410-0AY01-0AA0

Hot Sale Original Sinumerik 810DE CCU1 Module 6FC5410-0AY01-0AA0

$199-3994.9(702)
MOQ: 1 piece
NCU boardSinumerik 840D200+ store reviews≤3h response time
Shanghai Goldea Import & Export Co., Ltd.Shanghai Goldea Import & Export Co., Ltd.🇨🇳CN6 yrs
12 Months Warranty Used SIEMENS 6FC53570BB340AA0 Sinumerik CNC 840D NCU 573.4 Siemens Control Unit Control Board Fast Shipping

12 Months Warranty Used SIEMENS 6FC53570BB340AA0 Sinumerik CNC 840D NCU 573.4 Siemens Control Unit Control Board Fast Shipping

$3,0854.9(559)
MOQ: 1 piece
NCU boardSinumerik 840D300+ store reviews25% reorder rate≤3h response time
Shanghai Greentea Trade Co., LimitedShanghai Greentea Trade Co., Limited🇨🇳CN13 yrs
SINUMERIK 840D NCU 572.4 64MB PLC 317-2DP

SINUMERIK 840D NCU 572.4 64MB PLC 317-2DP

$686-1,0294.8(621)
MOQ: 1 piece
NCU boardSinumerik 840D50+ store reviews16% reorder rate≤1h response time
Shanghai MM Trade Co., LimitedShanghai MM Trade Co., Limited🇨🇳CN3 yrs
Original Brand New 6FC53570BB150AB0 SIEMESINUMERIC 840DDE HARDWARE NCU For PLC

Original Brand New 6FC53570BB150AB0 SIEMESINUMERIC 840DDE HARDWARE NCU For PLC

$3,4385.0(860)
MOQ: 1 piece
NCU boardSinumerik 840D10% reorder rate≤1h response time
Shanghai Yunnan Import & Export Co., Ltd.Shanghai Yunnan Import & Export Co., Ltd.🇨🇳CN1 yr
SINUMERIK840D/DE CNC hardware NCU 571.5 400 MHz 64 MB without system software memory NC 3 MB PLC 128 KB 6FC5357-0BB25-0AB0

SINUMERIK840D/DE CNC hardware NCU 571.5 400 MHz 64 MB without system software memory NC 3 MB PLC 128 KB 6FC5357-0BB25-0AB0

$400-1,0004.8(635)
MOQ: 1 piece
NCU boardSinumerik 840D33% reorder rate≤6h response time
Shanghai Goldea Trade Co., LimitedShanghai Goldea Trade Co., Limited🇨🇳CN2 yrs
SINUMERIK 840D sl NCU 730.3B PN

SINUMERIK 840D sl NCU 730.3B PN

$50-3004.8(136)
MOQ: 1 piece
NCU boardSinumerik 840D21% reorder rate≤1h response time
Hangzhou Shanghai Industries Co., Ltd.Hangzhou Shanghai Industries Co., Ltd.🇨🇳CN1 yr
Siemens New Original 6FC5210-0DF22-2AA0 SINUMERIK PCU 50 CNC Machine Control Unit

Siemens New Original 6FC5210-0DF22-2AA0 SINUMERIK PCU 50 CNC Machine Control Unit

$2,600-3,5604.9(299)
MOQ: 1 piece
NCU boardSinumerik 840D300+ store reviews34% reorder rate≤1h response time
Shanghai Fujian Import & Export Co., Ltd.Shanghai Fujian Import & Export Co., Ltd.🇨🇳CN5 yrs
SIEMENS 6FC5247-0AA30-0AA0 New and Original SINUMERIK 840D 6FC52470AA300AA0 Fan Box for NCU Box

SIEMENS 6FC5247-0AA30-0AA0 New and Original SINUMERIK 840D 6FC52470AA300AA0 Fan Box for NCU Box

$33-995.0(985)
MOQ: 1 piece
NCU boardSinumerik 840D50+ store reviews25% reorder rate≤2h response time
Shanghai Anxi Trade Co., LimitedShanghai Anxi Trade Co., Limited🇨🇳CN5 yrs
New 6FC5357-0BB33-0AE2 SINUMERIK 840D/DE NCU 573.3 6FC5 357-0BB33-0AE2 in Stock in Stock in Stock

New 6FC5357-0BB33-0AE2 SINUMERIK 840D/DE NCU 573.3 6FC5 357-0BB33-0AE2 in Stock in Stock in Stock

$10-1004.7(210)
MOQ: 1 piece
NCU boardSinumerik 840D≤2h response time
Sino-Shanghai Oriental ManufacturingSino-Shanghai Oriental Manufacturing🇨🇳CN1 yr
SIEMENS NC SINUMERIK 840D

SIEMENS NC SINUMERIK 840D

$550-4,5005.0(911)
MOQ: 1 set
NCU boardSinumerik 840D100% reorder rate
Shanghai Goldea Import & Export Co., Ltd.Shanghai Goldea Import & Export Co., Ltd.🇨🇳CN18 yrs
SINUMERIK 828D AC Servo Motor CNC Hardware PPU 290.4 Vertical 6FC5370-8AA40-0BA0 RS485 24V 1 Year Warranty

SINUMERIK 828D AC Servo Motor CNC Hardware PPU 290.4 Vertical 6FC5370-8AA40-0BA0 RS485 24V 1 Year Warranty

$3,6004.4(574)
MOQ: 1 acre
NCU boardSinumerik 840D10% reorder rate≤2h response time
Shanghai MM International GroupShanghai MM International Group🇨🇳CN3 yrs
Factory Price Siemens Sinumerik 808d Advanced 4 Axis CNC Controller for Retrofitting Lathe and Machining Center

Factory Price Siemens Sinumerik 808d Advanced 4 Axis CNC Controller for Retrofitting Lathe and Machining Center

$2,1504.9(864)
MOQ: 1 set
NCU boardSinumerik 840D100+ store reviews≤3h response time
Shanghai Hangzhou International GroupShanghai Hangzhou International Groupverified🇨🇳CN6 yrs
New and Original 6FC5 357-0BB11-0AE0 6FC5357-0BB11-0AE0 840DE NCU Stock in Warehouse

New and Original 6FC5 357-0BB11-0AE0 6FC5357-0BB11-0AE0 840DE NCU Stock in Warehouse

$1,781.684.4(241)
MOQ: 1 piece
NCU boardSinumerik 840D14% reorder rate≤1h response time
Shanghai Fujian Trade Co., LimitedShanghai Fujian Trade Co., Limited🇨🇳CN1 yr
Original SINUMERIK 808D 6FC5370-1AM00-0AA0 808D CNC System SINUMERIK 808D

Original SINUMERIK 808D 6FC5370-1AM00-0AA0 808D CNC System SINUMERIK 808D

$400-7004.9(481)
MOQ: 1 piece
NCU boardSinumerik 840D500+ store reviews47% reorder rate≤1h response time
Yunnan Shanghai Industries Co., Ltd.Yunnan Shanghai Industries Co., Ltd.verified🇨🇳CN11 yrs
840d Board Pick #23 (302994)

840d Board Pick #23 (302994)

$28.92-35.874.0(574)
MOQ: 100 pieces
NCU boardSinumerik 840D
Shanghai MM International GroupShanghai MM International Groupverified🇨🇳CN11 yrs
840d Board Pick #24 (209223)

840d Board Pick #24 (209223)

$45.71-51.644.1(836)
MOQ: 1 piece
NCU boardSinumerik 840D
Greentea Shanghai Industries Co., Ltd.Greentea Shanghai Industries Co., Ltd.verified🇨🇳CN13 yrs
840d Board Pick #25 (211955)

840d Board Pick #25 (211955)

$35.48-39.383.9(988)
MOQ: 100 pieces
NCU boardSinumerik 840D
Hangzhou Shanghai Industries Co., Ltd.Hangzhou Shanghai Industries Co., Ltd.verified🇨🇳CN15 yrs
840d Board Pick #26 (270438)

840d Board Pick #26 (270438)

$18.29-27.184.2(836)
MOQ: 100 pieces
NCU boardSinumerik 840D
Sino-Shanghai Anxi ManufacturingSino-Shanghai Anxi Manufacturingverified🇨🇳CN1 yrs
840d Board Pick #27 (110057)

840d Board Pick #27 (110057)

$4.56-9.994.9(864)
MOQ: 50 pieces
NCU boardSinumerik 840D
Shanghai Hangzhou International GroupShanghai Hangzhou International Groupverified🇨🇳CN6 yrs
840d Board Pick #28 (120913)

840d Board Pick #28 (120913)

$31.54-34.894.2(241)
MOQ: 50 pieces
NCU boardSinumerik 840D
Shanghai Fujian Trade Co., LimitedShanghai Fujian Trade Co., Limitedverified🇨🇳CN1 yrs
840d Board Pick #29 (354719)

840d Board Pick #29 (354719)

$19.08-24.263.8(77)
MOQ: 50 pieces
NCU boardSinumerik 840D
Shanghai Anxi Trade Co., LimitedShanghai Anxi Trade Co., Limitedverified🇨🇳CN14 yrs
840d Board Pick #30 (889414)

840d Board Pick #30 (889414)

$25.18-32.324.0(481)
MOQ: 50 pieces
NCU boardSinumerik 840D
Yunnan Shanghai Industries Co., Ltd.Yunnan Shanghai Industries Co., Ltd.verified🇨🇳CN1 yrs

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Sources & References

29 sources cited · Verified industry data & reports

C79458-L2339-A1 SINUMERIK 840D Board PLC

Alibaba.com

Sanlida specializes in electrical engineering, industrial control, and hydropower, providing both individual components and customized turnkey solutions for ...

siemens 6fc5357-0bb15-0aa0 ncu sinumerik 840d board

Sepmo

SIEMENS 6FC5357-0BB15-0AA0 NCU SINUMERIK 840D BOARD ; Condition. Used ; 100% Satisfied. If something does not meet your expectations, we will do what is necessary ...

Placa PLC SINUMERIK 840D C79458-L2339-A1

Alibaba.com

Principais características ; Número de I/O · Personalizado. Tensão de funcionamento ; Interface de comunicação. Plc, PAC, Controlador dedicado, Personalizado. Tipo.

Bo mạch PLC SINUMERIK 840D mã C79458-L2339-A1

Alibaba.com

Sanlida chuyên về kỹ thuật điện, điều khiển công nghiệp và thủy điện, cung cấp cả các bộ phận riêng lẻ và các giải pháp chìa khóa trao tay tùy chỉnh cho các ...

C79458-L2339-A1 SINUMERIK 840D 보드 PLC| Alibaba.com

Alibaba.com

당사는 단종되거나 구하기 어려운 장비부터 현장 서비스 및 전문 수리 지원에 이르기까지 운영을 원활하게 유지할 수 있는 자동화, 산업, 전기 및 MRO 부품을 공급합니다.

C79458-L2339-A1 SINUMERIK 840D Board PLC

Alibaba.com

C79458-L2339-A1 SINUMERIK 840D Board PLC. Share. No reviews yet. Model Number (13). C79458-L2339-A1. C79458-L2339-A2. C79458-L2339-B1. C79458-L2270-A1.

How to Source Genuine 840D NCU and PLC Boards