Airtac SSA Single-Acting Compact Cylinder SSA20X30S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA20X30S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø20mm bore and 30mm 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
- Stroke30 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SSA Single-Acting Compact Cylinder SSA20X30S
The AirTAC SSA20X30S is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It provides 134.1 N of net push force at 0.5 MPa, meaning the return spring's resistance is already subtracted from the raw air pressure. This makes it a reliable design figure rather than a theoretical maximum.
Featuring a built-in piston magnet, this unit pairs directly with AirTAC reed or electronic switches via the body sensor grooves. The short riveted body significantly reduces axial mounting depth, fitting easily into crowded fixtures where standard cylinders cannot. It uses an 8 mm piston rod and a fixed NBR bumper to absorb end-of-stroke shock.
Airtac SSA Single-Acting Compact Cylinder SSA20X30S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA20X30S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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 SSA20X30S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×30 | 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 SSA20X30S Is Used
Short-Stroke Part Ejection
Uses the full 30 mm stroke to push machined components out of a fixture, relying on the 134.1 N net push to overcome friction.
Package Diverting
Acts as a compact diverter arm where the internal spring automatically retracts the pin when air is removed, clearing the conveyor path.
PCB Edge Clamping
Secures delicate electronics during assembly with a safe working load around 80 N, preventing damage while maintaining position.
Is the Airtac SSA Single-Acting Compact Cylinder SSA20X30S the Right Cylinder?
When sizing this 20 mm bore model, consider the neighboring options. Stepping down to the SSA16 yields 80.5 N of net push at 0.5 MPa, while moving up to the SSA25 provides 216.9 N. This SSA20X30S sits comfortably in the middle, offering a safe working load of roughly 80 N, which translates to a vertical lift capacity of approximately 6.8 kg with a 2:1 safety margin.
This configuration features a 30 mm stroke, the absolute maximum standard stroke for the SSA series. It requires an operating pressure of 0.2-1.0 MPa to overcome the internal spring. Because the spring drives the rod to its retracted rest position on air loss, it cannot hold a mid-stroke load without external devices. This specific build includes the -S magnet for position sensing and uses a female M4x0.7 rod-end thread with 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 SSA20X30S FAQ
The net push force is 134.1 N at 0.5 MPa and 196.9 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. As a single-acting push cylinder, the internal spring retracts the rod when air pressure drops below the 0.2 MPa minimum. It cannot lock or hold a mid-stroke load without live pressure or an external locking device.
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