Airtac SSA Single-Acting Compact Cylinder SSA16X20SB
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA16X20SB 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 SSA16X20SB
The AirTAC SSA16X20SB is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It provides 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. The short riveted body minimizes axial mounting depth in crowded machinery.
This specific configuration includes a built-in piston magnet for position sensing and a male M5x0.8 threaded rod end. Operating on a single M5x0.8 air line simplifies plumbing, as one solenoid drives the motion while the spring handles the reset. A fixed NBR bumper decelerates the stroke end, operating reliably between -20 and +70 C.
Airtac SSA Single-Acting Compact Cylinder SSA16X20SB Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA16X20SB |
|---|---|
| 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 SSA16X20SB
| 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 SSA16X20SB Is Used
Small Part Ejection
Uses the 80.5 N net extension force to push lightweight machined components out of a fixture quickly within tight axial mounting clearances.
Package Diverter
Employs the 20 mm stroke and male M5x0.8 rod to deflect small cartons on a conveyor, relying on the internal spring to retract when air is released.
PCB Clamping
Secures circuit boards during testing using the 16 mm bore, taking advantage of the compact riveted body to fit densely packed assembly stations.
Is the Airtac SSA Single-Acting Compact Cylinder SSA16X20SB the Right Cylinder?
When sizing this model, compare its 80.5 N net push at 0.5 MPa with adjacent bores: the SSA12 yields 46.5 N, while the SSA20 provides 134.1 N. This makes the 16 mm bore ideal for medium-duty tasks where a safe working load of roughly 48 N (about 60% of the 0.5 MPa figure) or a vertical lift of 4.1 kg with a 2:1 margin is required.
The 20 mm stroke sits well below the 30 mm single-acting ceiling. Remember that upon air loss the spring drives the rod back to rest, so it cannot hold a mid-stroke load without external devices. This unit features the -S magnet for reed or electronic switches, the -B male M5x0.8 rod thread, and an M5x0.8 port.
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 SSA16X20SB FAQ
The net push force is 80.5 N at 0.5 MPa and 120.7 N at 0.7 MPa. These values already account for the internal return spring resistance, giving you the true available output force for your application.
No, it is a single-acting push cylinder where the spring retracts the rod upon air loss. It requires a minimum of 0.2 MPa to overcome the spring and cannot hold a mid-stroke load; an external rod lock would be needed for holding.
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