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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
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Main CPU master control board for Series 16 and 18 generation CNC controls. Multi-layer A16B card that carries the peripheral and SMD option modules.
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| MFR / Brand | FANUC |
|---|---|
| MPN | A16B-2200-0500 |
| Model | A16B-2200-0500-R |
| Type | Circuit Board |
|---|---|
| Base Number | A16B-2200-0500 |
| Industry Terms | Fanuc main board, master board, CNC motherboard, main CPU card, Fanuc A16B board, Series 16 main CPU, machine tool control CPU board |
| Common Misspellings | Fanuk A16B-2200-0500, Funac A16B22000500, A16B-22OO-0500, A16B 2200 O500 |
| Application Types | CNC machining centre and lathe control repair, Series 16/18 control rebuild, machine tool retrofit |
| Controller Platform | Fanuc Series 16 / 18 CNC |
| Mpn Variants | A16B-2200-0500, A16B22000500, A16B 2200 0500, A16B-2200-0500-R, A16B22000500R, A16B2200-0500 |
| Manufacturer Status | Legacy / discontinued platform – surplus and repair market only |
| Compatible With Replaces | Fanuc Series 16 and Series 18 CNC controls using A16B-2200 series master boards |
| Part Number | A16B-2200-0500 |
| Mounting Type | Master board, chassis / card rack mounted |
A Fanuc A16B-2200-0500 main CPU board — the master card of a Series 16 / Series 18 generation CNC control. On this generation the master board is the spine of the control: the CNC processor and its bus live here, and the peripheral cards and SMD plug-in modules that give the control its axis count, memory size, graphics and I/O capability all mount onto it. It is a CPU / master-tier board, supplied as a bare board.
A16B: Fanuc printed-circuit-board prefix for the large multi-layer main, master, axis and servo boards. A20B is the prefix for the smaller sub-boards and plug-in daughter cards.
2200: the control generation group. A16B-2200 boards belong to the Fanuc Series 15 / 16 / 18 generation; the sibling A16B-2200-0900 is documented as the main CPU board of the Series 16-A.
0500: the specific board within that generation.
The base number A16B-2200-0500 is the ordering and matching number.
Two boards with the same A16B-2200 base number can behave differently depending on which SMD modules are plugged into them — that is how Fanuc configured axis count, memory and options on this generation. The base number governs fit; the fitted modules govern capability. The full number silk-screened on the board, together with any edition suffix after the slash, is the authoritative identifier, and the module-to-socket layout is part of the configuration.
A16B-2200 boards seat in Series 15 / 16 / 18 generation controls. Series 0 controls and the later i-series controls use different base groups such as 1000, 8100 and 3300.
Sold as 1 piece — one bare main CPU board. New old stock, in an opened box. CNC system software, parameters, PMC ladder and the SMD plug-in modules come from the receiving control.
Searchable equivalents of the same part: A16B-2200-0500, A16B22000500, A16B 2200 0500, A16B-2200-0500-R, A16B22000500R. Different editions of the same base number are the same board at a different revision level. Adjacent numbers such as A16B-2200-0092 or A16B-2200-0900 are different boards on the same platform — related, not interchangeable.
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