Timken vs. SKF Bearings: The Difference Between Tier-1 Bearing Brands
When sourcing a replacement bearing, you will often find both Timken and SKF options for
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Siemens SIMATIC S5 IM 300 interface module for centralised expansion-unit to central-controller connection, without power supply. S5-135U / S5-155U. German-made new old stock.
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| MFR / Brand | SIEMENS |
|---|---|
| MPN | 6ES5300-5CA11 |
| Model | 6ES5300 5CA11 |
| Condition | New – Open box |
|---|---|
| Type | Circuit Board |
| Base Number | 6ES5300 |
| Industry Terms | interface module; IM300; S5 interface module; expansion unit interface; SIMATIC S5 module; PLC rack interface; legacy Siemens PLC spare; EU to CC interface |
| Common Misspellings | 6ES5 300-5CA11; 6ES53005CA11; 6ES5300-5CA1; 6ES5300 5CA11; IM 300 5CA11; Seimens 6ES5300-5CA11; Simatic S5 IM300 |
| Application Types | Legacy SIMATIC S5 plant maintenance; S5-135U and S5-155U rack expansion; machine tool and process line retrofits; long-life installed base spares holding |
| Condition Note | Made In Germany, New Old Stock |
| Controller Platform | Siemens SIMATIC S5 (S5-135U / S5-155U) |
| Mpn Variants | 6ES5300-5CA11; 6ES53005CA11; 6ES5 300-5CA11; 6ES5300 5CA11; IM300-5C |
| Manufacturer Status | SIMATIC S5 platform discontinued by Siemens; supplied as new old stock legacy spare |
| Compatible With Replaces | Siemens SIMATIC S5-135U and S5-155U central controllers and expansion units in centralised configuration; family member 6ES5300-3AB11 is a different IM300 variant |
| Additional Attributes | Module type: IM 300 interface module, EU side; Function: connects expansion unit to central controller, or to an expansion unit in compact version, in centralised configuration; Power supply: not included - module supplied without power supply; Documented subsystems: SIMATIC S5-135U, S5-155U; Board dimensions: approx 200 x 250 x 30 mm (8 x 10 x 1 in); Country of manufacture: Germany; Fitting note: S5 interface modules pair between specific IM300 sender and receiver variants - confirm the companion module and rack revision before fitting |
| Item Weight | 0.361 kg (0.80 lb) |
| Part Number | 6ES5300-5CA11 |
| Cross Reference 1 | Siemens 6ES5300-5CA11 (SIMATIC S5 IM 300) |
|---|---|
| Cross Reference 2 | 6ES53005CA11 |
| Cross Reference 3 | IM 300-5C |
The Siemens 6ES5300-5CA11 is the SIMATIC S5 IM 300 interface module, used in centralised configurations to connect an expansion unit (EU) to a central controller (CC), or to an expansion unit in compact version. It is the EU-side interface without its own power supply, so the expansion rack draws from the configuration rather than a local supply. It is documented for the S5-135U and S5-155U subsystems. German-manufactured new old stock.
In practice this is the module that lets an S5 rack grow beyond the slots available in the central controller while keeping the I/O local and centrally configured, as opposed to a distributed setup running over a serial link.
Board size: roughly 200 x 250 x 30 mm (8 x 10 x 1 in)
Weight: about 0.361 kg
Because S5 interface modules pair specifically between IM300-series senders and receivers, confirm the exact companion module and rack revision before fitting.
SIMATIC S5 is long discontinued, so new old stock and tested-exchange boards are the normal route for keeping S5 plant running.
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