Airtac SSA Single-Acting Compact Cylinder SSA20X5
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA20X5 is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø20mm bore and 5mm 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.
- BoreØ20 mm
- Stroke5 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA20X5
The AirTAC SSA20X5 is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It generates 134.1 N of net push at 0.5 MPa, meaning the return spring force is already subtracted from the raw air force. This 20 mm bore unit uses an 8 mm rod and an M5x0.8 port, requiring only one air line and one solenoid port to operate.
Designed for tight spaces, the short riveted body minimizes axial mounting depth compared to round-body alternatives. The stroke end is decelerated by a fixed NBR bumper, which is not an adjustable cushion. Because this specific SKU lacks the -S option, it has no piston magnet and cannot accept position switches; the -S variant is required for reed or electronic sensing.
Airtac SSA Single-Acting Compact Cylinder SSA20X5 Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA20X5 |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 (Ø20mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 134 N |
| 0.7 MPa | 197 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 SSA20X5
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×5 | 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 SSA20X5 Is Used
Short-Stroke Part Ejection
Uses the 134.1 N net push to eject small molded components from a fixture quickly before the next cycle begins.
Thin-Wall Clamping
Applies controlled holding force against delicate sheet metal without crushing, relying on the spring to release the clamp instantly.
Transfer Line Diverter
Pivots a guide rail for 5 mm to redirect small product flow on a crowded conveyor where mounting depth is highly restricted.
Is the Airtac SSA Single-Acting Compact Cylinder SSA20X5 the Right Cylinder?
When sizing this model, verify if the 134.1 N net push at 0.5 MPa meets your requirements. A safe working load is roughly 80 N, or about 6.8 kg for vertical lifting with a 2:1 margin. If less force is needed, the smaller SSA16 bore provides 80.5 N at 0.5 MPa. If more power is required, stepping up to the SSA25 bore yields 216.9 N at 0.5 MPa.
This configuration features a 5 mm stroke, well under the 30 mm maximum standard limit. The rod end has a female M4x0.7 thread, and the unit operates at 0.2-1.0 MPa. Remember that the spring drives the rod back to rest upon air loss, so it cannot hold a mid-stroke load without external live pressure or a locking device.
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 SSA20X5 FAQ
The SSA20X5 provides 134.1 N of net push force at 0.5 MPa and 196.9 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 must select the SSA20X5S variant to use AirTAC reed or electronic switches for position detection.
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