Airtac SSA Single-Acting Compact Cylinder SSA40X30S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA40X30S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke30 mm
- Port sizePT1/8
- Acting typeSingle acting, push type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA40X30S
The AirTAC SSA40X30S is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It provides 545.6 N of net push at 0.5 MPa, meaning the return spring force is already subtracted from the raw air pressure. This 40 mm bore unit features a 30 mm stroke, representing the maximum standard extension available in this series.
Because it relies on a spring return, you only need one air line and one solenoid port to drive the motion, reducing plumbing complexity. The short riveted body minimizes axial mounting depth in tight fixtures. A fixed NBR bumper handles end-of-stroke shock, and the built-in magnet (-S) supports position sensing using a reed or electronic switch.
Airtac SSA Single-Acting Compact Cylinder SSA40X30S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA40X30S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Single acting, push type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 546 N |
| 0.7 MPa | 797 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 SSA40X30S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 40 | 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 SSA40X30S Is Used
Stamping Ejection
Uses the 545.6 N net push to eject stamped metal parts from a die, with the spring safely retracting the rod during the press cycle.
Inline Diverter
Pushes cartons off a main belt at 30 mm stroke, requiring only a single valve and air line to operate the diverter arm.
Fixture Clamping
Secures heavy workpieces during machining, taking advantage of the compact riveted body to fit within crowded tooling layouts.
Is the Airtac SSA Single-Acting Compact Cylinder SSA40X30S the Right Cylinder?
When sizing this model, compare its 545.6 N net push at 0.5 MPa against adjacent bores: the SSA32 provides 346.6 N, while the SSA50 yields 874.7 N. For a 2:1 safety margin, the safe working load is approximately 327 N, capable of a vertical lift around 27.8 kg. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring.
This configuration uses a PT1/8 port, a 16 mm piston rod, and a female M8x1.25 rod-end thread. The 30 mm stroke is the series ceiling. Remember that upon air loss the spring drives the rod back to rest; it will not hold a mid-stroke load. The included -S magnet enables AirTAC reed or solid-state switches.
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 SSA40X30S FAQ
The SSA40X30S delivers a net push force of 545.6 N at 0.5 MPa and 796.9 N at 0.7 MPa. These figures already account for the internal return spring resistance.
No. It is a single-acting push cylinder where the spring retracts the rod to rest upon air loss. It cannot hold a mid-stroke load and requires a minimum of 0.2 MPa to overcome the spring for extension.
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