Airtac SSA Single-Acting Compact Cylinder SSA16X20
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA16X20 is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø16mm bore and 20mm stroke. Air pushes the rod and an internal spring returns it, so one solenoid line drives the motion — ideal for short-stroke clamping and ejection in tight spaces.
- BoreØ16 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA16X20
The AirTAC SSA16X20 is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It delivers 80.5 N of net push at 0.5 MPa, meaning the return spring force is already subtracted to give you a real design figure. This 16 mm bore unit uses a 6 mm rod and an M5x0.8 port.
Because the spring handles the return stroke, you only need a single air line and one solenoid port to drive the motion. This cuts down on fittings and simplifies your valve setup. The short riveted body saves axial mounting depth in crowded fixtures, and a fixed NBR bumper decelerates the stroke end without requiring adjustable cushions.
Airtac SSA Single-Acting Compact Cylinder SSA16X20 Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA16X20 |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø16 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed NBR bumper |
| Max standard stroke | Up to 30 mm |
Specifications follow the official AirTAC SDA-family datasheet. Single-acting types start at 0.2 MPa (the spring must be overcome). Confirm against the product label before installation.
Net Output Force (Ø16mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 81 N |
| 0.7 MPa | 121 N |
These are NET output forces — the return-spring force is already deducted. Single-acting push only; the spring performs the opposite stroke. Size with a safety margin.
Model Code: Airtac SSA Single-Acting Compact Cylinder SSA16X20
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×20 | Stroke length in mm (single-acting max 30 mm). |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rod (omit = female thread). |
Thread: PT standard. SSA pushes out / spring returns; STA pulls in / spring extends. Related: SDA (double acting), SDAD (double rod), SDAJ (adjustable stroke).
Where the Airtac SSA Single-Acting Compact Cylinder SSA16X20 Is Used
Small Part Ejection
Uses the 80.5 N net push to eject small molded components from a tight fixture, saving axial depth with its riveted body.
Package Diverting
Acts as a compact diverter arm on a conveyor line, relying on the single air line to extend and the internal spring to quickly retract.
PCB Clamping
Holds delicate printed circuit boards during processing, where the fixed NBR bumper ensures gentle end-of-stroke deceleration.
Is the Airtac SSA Single-Acting Compact Cylinder SSA16X20 the Right Cylinder?
When sizing this model, consider the neighboring bores to ensure you hit your exact force target. Dropping down to the SSA12 provides 46.5 N of net push at 0.5 MPa, while stepping up to the SSA20 yields 134.1 N at the same pressure. This SSA16X20 configuration features a 20 mm stroke (well under the 30 mm maximum), a female M3x0.5 rod-end thread, and no piston magnet.
Keep the spring-return behavior in mind for your application: if air pressure drops, the internal spring drives the rod back to its retracted rest position, so it cannot hold a mid-stroke load without live pressure. A safe working load is approximately 48 N, which is about 60 percent of the 80.5 N net figure at 0.5 MPa, allowing for a 2:1 margin.
Quick checklist
- ✓ Net push force at your working pressure
- ✓ Stroke ≤ 30 mm (single-acting limit)
- ✓ Single air line saves a valve/port
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Remember the spring performs the return stroke.
- check Avoid side load on the short piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SSA Single-Acting Compact Cylinder SSA16X20 FAQ
This model provides a net push force of 80.5 N at 0.5 MPa and 120.7 N at 0.7 MPa. These figures already account for the internal return spring resistance, giving you the actual usable output force.
No, this specific SKU does not include a piston magnet. You would need to select the -S option code variant to add a magnet for use with AirTAC reed or electronic switches.
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Standard models usually ship in 3-4 days.
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