Airtac SSA Single-Acting Compact Cylinder SSA16X20B
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA16X20B 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 SSA16X20B
The AirTAC SSA16X20B 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 force at 0.5 MPa, meaning the return spring's resistance is already subtracted from the raw pneumatic force. This 16 mm bore unit requires only one air line and one solenoid port, simplifying plumbing while cutting fitting costs.
Designed with a short riveted body, this model saves axial mounting depth in crowded fixtures where longer profile cylinders cannot fit. The stroke travels at 50-500 mm/s and stops against a fixed NBR bumper that absorbs end shock without being adjustable. This specific SKU features a male M5x0.8 rod thread and lacks a piston magnet, so it cannot accept magnetic switches.
Airtac SSA Single-Acting Compact Cylinder SSA16X20B Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA16X20B |
|---|---|
| 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 SSA16X20B
| 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 SSA16X20B Is Used
Small Part Clamping
Uses the 80.5 N net push force to secure light aluminum workpieces in a machining fixture without occupying valuable axial space.
Product Ejection
Pushes completed plastic molded parts off a conveyor belt using the 20 mm stroke, relying on the internal spring to retract instantly when air is cut.
Flap Folding
Extends to fold cardboard packaging flaps, taking advantage of the single air line design to reduce valve complexity in tight packaging machinery.
Is the Airtac SSA Single-Acting Compact Cylinder SSA16X20B the Right Cylinder?
When sizing this model, consider the neighboring bores: stepping down to the SSA12 yields 46.5 N at 0.5 MPa, while stepping up to the SSA20 provides 134.1 N at 0.5 MPa. This SSA16X20B generates 80.5 N at 0.5 MPa, translating to a safe working load of roughly 48 N at a 2:1 margin, or a vertical lift capacity of about 4.1 kg.
This configuration has a 20 mm stroke, well within the 30 mm maximum for the series. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring. Because it is spring-returned, the cylinder does not hold a mid-stroke load on air loss; it retracts to its rest position. Confirm the 16 mm bore, 20 mm stroke, M5x0.8 port, male M5x0.8 rod thread, and absence of a magnet for your setup.
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 SSA16X20B FAQ
The net push force is 80.5 N at 0.5 MPa and 120.7 N at 0.7 MPa. These figures already account for the return spring resistance, giving you the true usable output for your design calculations.
No, the internal spring drives the rod back to its retracted rest position when air is released. It cannot hold a mid-stroke load, and it requires a minimum of 0.2 MPa operating pressure to overcome the spring and extend.
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