Airtac SSA Single-Acting Compact Cylinder SSA40X15S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA40X15S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø40mm bore and 15mm 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
- Stroke15 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 SSA40X15S
The AirTAC SSA40X15S is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It delivers 545.6 N of net push at 0.5 MPa, meaning the return spring force is already subtracted to give you a real design figure. This bore uses a 16 mm rod and a PT1/8 port.
Because it only needs one air line and one solenoid port, plumbing is simplified for tight fixtures. The short riveted body saves axial mounting depth compared to round-body alternatives. A fixed NBR bumper decelerates the stroke end, and the built-in magnet allows position detection with an AirTAC reed or electronic switch.
Airtac SSA Single-Acting Compact Cylinder SSA40X15S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA40X15S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 SSA40X15S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 SSA40X15S Is Used
Stamping Ejection
Uses the 545.6 N net extension force to push stamped parts clear of a die before the next cycle.
Inline Diverting
Extends 15 mm to deflect packages on a conveyor, relying on the spring to retract when air stops.
Fixture Clamping
Holds a workpiece during machining with a single air line, saving valve and fitting costs in tight cells.
Is the Airtac SSA Single-Acting Compact Cylinder SSA40X15S the Right Cylinder?
When sizing this 40 mm bore, stepping down to the SSA32 yields 346.6 N at 0.5 MPa, while stepping up to the SSA50 provides 874.7 N. A safe working load is approximately 327 N, or a vertical lift of about 27.8 kg with a 2:1 margin. Operating pressure must be 0.2-1.0 MPa to overcome the spring.
This configuration has a 15 mm stroke, well under the 30 mm maximum. Upon air loss, the spring drives the rod back to rest; it does not hold a mid-stroke load. Confirm the PT1/8 port, the -S magnet, and the female M8x1.25 rod thread for your assembly.
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 SSA40X15S FAQ
The net push force is 545.6 N at 0.5 MPa and 796.9 N at 0.7 MPa. These values already subtract the internal return spring force.
No. If air is released, the internal spring drives the rod to its retracted rest position. It cannot hold a mid-stroke load; use an external rod lock for that.
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