The SMC MXQ16A-125Z is a compact pneumatic air slide table designed for applications that need accurate linear motion, good rigidity, and repeatable positioning—without the complexity of an external linear guide. In practical machine design terms, it sits in the sweet spot between a plain rod cylinder (cheap, fast, but poor moment resistance) and a full ballscrew/servo stage (precise, but heavier and more expensive).
With a 16 mm bore and a 125 mm stroke, the MXQ16A-125Z is commonly used for short-to-medium travel tasks such as part transfer, indexing, stopper mechanisms, small presses, sensor positioning, pick-and-place shuttles, and fixture actuation. The slide-table construction helps it tolerate offset loads and moments better than a standard cylinder, making it suitable for real-world tooling where loads are rarely perfectly centered.
A detail that matters in automated equipment is the “invisible” cost of mass. This model’s published product net weight is about 1.1 kg, which is light enough for moving subassemblies and compact gantry tooling, yet substantial enough to feel mechanically stiff.
Key Specifications (Typical Listing Data)
| Item | Value |
|---|---|
| Manufacturer / Model | SMC MXQ16A-125Z |
| Product type | Pneumatic guided cylinder / air slide table |
| Bore size | 16 mm |
| Stroke | 125 mm |
| Action | Double acting |
| Max operating pressure | 0.7 MPa |
| Absolute max pressure (listing) | 1.05 MPa |
| Cushioning (listing) | Rubber |
| Dimensions (L × W × H) | 245.5 × 65 × 35 mm |
| Net weight | 1.1 kg |
Note on weight: “Weight” can change with options (auto-switch, brackets, custom variants). The value above is a commonly published figure for MXQ16A-125Z as sold through major distributors.
What Makes the MXQ16A-125Z Useful in Machines
1) Guided rigidity in a compact footprint
A slide table is essentially a cylinder integrated with a guiding mechanism. That built-in guidance resists pitching, yawing, and rolling moments far better than a bare piston rod. In production equipment, this translates to fewer “mystery jams,” less uneven wear, and better positional repeatability under real tooling loads.
2) Cleaner mechanical design (fewer stacked parts)
Many machines start life as a rod cylinder plus an external linear guide. That works, but it takes space, demands careful alignment, and increases the part count. A slide table like the MXQ series reduces that stack-up, often simplifying assembly and long-term maintenance.
3) Practical speed and repeatability for automation
Pneumatic actuation remains popular because it’s fast, cost-effective, and robust in dirty environments. The MXQ16A-125Z keeps those advantages while offering better guidance—ideal for high-cycle motion where the mechanism needs to behave predictably.
Application Fit: Where This Model Typically Shines
| Application scenario | Why MXQ16A-125Z fits |
|---|---|
| Pick-and-place shuttle (short travel) | 125 mm stroke supports short transfers; guided body handles off-center grippers |
| Stopper / diverter mechanisms | Slide-table guidance tolerates repeated impacts and moment loading better |
| Fixture actuation and clamping motions | Compact height (approx. 35 mm) helps in tight tooling spaces |
| Sensor/camera positioning | Stable platform reduces deflection vs. plain cylinders |
| Light pressing / insertion assists | Double-acting control and guided structure improve consistency |
Design Notes for Engineers (The “Don’t Get Bit Later” Section)
Load and moment planning
Even a guided cylinder has limits. The more your load is offset from the table centerline, the more moment you apply, and the more you risk increased friction, wear, or reduced life. If your payload is mounted on an arm or bracket, treat the overhang as a first-class design parameter, not an afterthought. SMC’s MXQ series catalog includes selection guidance and deflection/moment references for different strokes and bores.
Pneumatic circuit considerations
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Use appropriate flow control (meter-out is common for stable motion).
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Avoid slamming into end stops at high speed; cushioning choice matters for cycle life.
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If you need reliable intermediate stopping, consider external mechanical stops or sensors rather than “hoping” pressure control behaves like a servo.
Mounting and alignment
One advantage of a slide table is reduced alignment pain, but it still needs a flat mounting surface. Any mounting distortion becomes friction, and friction becomes unpredictable motion and air consumption. In other words: a warped base plate can turn a good actuator into a grumpy one.
Maintenance and Reliability Practices
| Maintenance item | Practical guidance |
|---|---|
| Air quality | Use clean, dry air; contamination accelerates seal wear and stick-slip behavior |
| Speed tuning | Set speeds to avoid hard impacts; reduce cycle shock for longer guide life |
| Inspection | Periodically check mounting bolts and table play if the application is high-cycle |
| Leak checks | A small leak becomes a big cost in 24/7 compressed-air systems |
Summary
The SMC MXQ16A-125Z is a strong choice when you need a compact, guided, double-acting pneumatic slide with enough stroke (125 mm) to be useful, and enough stiffness to behave well under real tooling loads. With an approximate weight of 1.1 kg and a compact form factor (approx. 245.5 × 65 × 35 mm), it integrates cleanly into space-constrained automation modules while improving rigidity and repeatability compared with standard cylinders.
