The SMC MXQ12-75AS is a precision pneumatic slide table actuator from SMC’s MXQ Series, designed for applications that require compact linear motion with good rigidity, repeatable travel, and stable mounting geometry. In practical automation systems, this type of actuator is commonly used in pick-and-place platforms, small transfer slides, stopper mechanisms, sensor positioning, and assembly fixtures where a standard air cylinder alone cannot provide the same guidance accuracy. SMC classifies the MXQ as an Air Slide Table, and the series is built around an integrated guide-and-table concept rather than a separate cylinder plus external guide arrangement.
For the requested model MXQ12-75AS, the code indicates a 12 mm bore slide table with 75 mm stroke and an AS adjuster option (extension-end rubber stopper stroke adjuster). The MXQ catalog’s option table explicitly lists AS as the symbol for the rubber stopper, extension-side adjuster option, and the standard stroke table includes 75 mm as a valid stroke for MXQ12.
Model Code Breakdown
| Code Segment | Meaning |
|---|---|
| MXQ | SMC Air Slide Table series (precision guided pneumatic slide) |
| 12 | Bore size 12 mm |
| 75 | Standard stroke 75 mm |
| AS | Extension-side rubber stopper adjuster option |
The catalog also shows that MXQ actuators are double-acting and support multiple option combinations (buffer, end lock, axial piping, and different adjuster styles), which makes the MXQ family flexible for machine builders working with different fixture layouts.
Product Weight (Calculated from SMC Catalog)
SMC’s MXQ catalog provides weight data in two parts:
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Base unit weight by model and standard stroke
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Additional weight for adjuster/function options
For MXQ12 at 75 mm stroke, the standard weight table shows 655 g. The same page also lists the additional weight of adjuster option for the AS (rubber stopper, extension) configuration; for MXQ12, that increment is 25 g. Therefore, the catalog-based estimated weight for MXQ12-75AS is:
655 g + 25 g = 680 g
This is the most reliable way to derive the weight when the exact suffix combination is not listed as a single line item in a distributor page.
Weight Summary Table
| Item | Weight |
|---|---|
| MXQ12 base weight at 75 mm stroke | 655 g |
| AS adjuster option added weight (MXQ12) | 25 g |
| Estimated total weight for MXQ12-75AS | 680 g |
Core Technical Specifications
The MXQ series specification table in the SMC catalog provides the general operating parameters for the standard MXQ family. For MXQ12-75AS (which remains part of the standard MXQ structure with an adjuster option), the relevant platform specifications are as follows.
| Item | Specification |
|---|---|
| Brand | SMC |
| Model | MXQ12-75AS |
| Product Type | Pneumatic air slide table / guided actuator |
| Series | MXQ |
| Bore Size | 12 mm |
| Stroke | 75 mm |
| Action | Double acting |
| Fluid Used | Air |
| Operating Pressure | 0.15 to 0.7 MPa |
| Proof Pressure | 1.05 MPa |
| Ambient / Fluid Temperature | -10 to 60°C |
| Operating Speed Range | 50 to 500 mm/s |
| Cushion (standard/option dependent) | Rubber bumper / optional shock absorber / metal stopper variants in series |
| Lubrication | Not required |
| Stroke Tolerance | +1 / 0 mm |
| Adjuster Option on This Model | AS = Extension-side rubber stopper |
Structural Advantages of the MXQ Series
1) Integrated Slide Table Design
The MXQ series is positioned as an air slide table, meaning the table and guide mechanism are integrated as a unit rather than assembled from separate motion components. This format typically improves assembly consistency and reduces tolerance stack-up in compact automation modules. SMC’s MXQ catalog emphasizes dimensional precision and table accuracy references, which is one reason this series is widely used in fixture-oriented automation equipment.
2) Stable Guidance for Precision Motion Tasks
Compared with a basic rod cylinder pushing an external carriage, the MXQ architecture is better suited for applications where the moving surface must stay aligned during travel. The catalog includes reference data for table accuracy, parallelism, and deflection behavior, indicating the series is engineered for guided linear motion rather than simple thrust output alone. That matters in tasks such as:
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Positioning sensors or probes
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Small transfer stages
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Part stop and align mechanisms
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Tray handling in compact equipment
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Pneumatic indexing or shuttle slides
These use cases benefit from a more rigid and guided platform, especially when side loads or tooling offsets are present.
3) Flexible Stroke Adjustment with AS Option
The AS suffix is important because it adds a rubber stopper stroke adjuster on the extension end. This is useful when the machine designer wants a practical way to fine-tune end position without redesigning the mounting plate or adding external stop hardware. The catalog identifies the AS/AT/A option family and notes a 0 to 5 mm stroke adjusting range for these adjuster options.
This feature is especially useful in commissioning and retrofit work, where a small end-of-stroke correction can save time during setup.
Why MXQ12-75AS Is a Practical Choice
The 12 mm bore / 75 mm stroke combination sits in a useful middle range within the MXQ family. It offers more output force and table mass capacity than the smaller MXQ6/MXQ8 sizes, while remaining more compact than MXQ16 and above. The theoretical force table in the catalog also shows that MXQ12 provides a meaningful step up in force compared with the smaller sizes (force values vary by pressure and in/out direction, as listed in the MXQ force table).
From a machine design perspective, MXQ12-75AS is often a sensible option when you need:
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Moderate stroke length (75 mm)
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Compact guided motion
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Pneumatic simplicity
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Adjustability at the extension end
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Easy integration with standard SMC pneumatic controls and auto switch options (if a switch suffix is added)
Engineering Selection Notes
When specifying or replacing an MXQ12-75AS, it is worth checking the following points before purchase:
1) Load and Mounting Orientation
Even though the MXQ is a guided slide, actual performance depends on payload weight, center-of-gravity offset, and mounting orientation. If the tooling is mounted far from the table center, bending moment increases and can affect service life and repeatability.
2) Required End Position Precision
The AS option provides extension-end stroke adjustment with a rubber stopper. This is useful for mechanical tuning, but it is not the same as a servo actuator with programmable positioning. It is intended for pneumatic end-point adjustment, not multi-position control.
3) Speed and Impact Control
The standard operating speed range is broad (50 to 500 mm/s), but actual usable speed depends on payload and stop conditions. If the motion has high impact at the end of travel, users may consider other MXQ option variants (such as shock absorber types) depending on the machine duty. SMC lists these variants separately in the MXQ option structure.
4) Auto Switch Requirements
Your requested code MXQ12-75AS does not include an auto switch suffix (such as M9-series). If end-position detection is required for PLC interlocking, the switch model and cable length should be specified separately according to the applicable switch list in the catalog.
SEO-Oriented Product Summary
SMC MXQ12-75AS is a 12 mm bore, 75 mm stroke pneumatic air slide table in the SMC MXQ Series, designed for compact guided linear motion in industrial automation equipment. It uses a double-acting air-driven structure and includes an AS extension-end rubber stopper stroke adjuster, which helps fine-tune the end position during machine setup. Based on the SMC MXQ catalog weight table and adjuster option weight table, the estimated product weight for MXQ12-75AS is 680 g. This model is suitable for precision transfer slides, fixture motion, stopper units, and compact assembly mechanisms where stable guided travel is required.
