Airtac SSA Single-Acting Compact Cylinder SSA40X15SB
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA40X15SB 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 SSA40X15SB
The AirTAC SSA40X15SB is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring retracts it. Driven through a single PT1/8 port, it generates 545.6 N of net push at 0.5 MPa (796.9 N at 0.7 MPa). The quoted force is already net of the return spring, providing a true design figure rather than raw air pressure. Its short riveted body saves axial mounting depth where a standard round-body cylinder will not fit.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches, plus a male M14x1.5 threaded rod end. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring.
Airtac SSA Single-Acting Compact Cylinder SSA40X15SB Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA40X15SB |
|---|---|
| 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 SSA40X15SB
| 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 SSA40X15SB Is Used
Stamping Pin Ejection
Uses the 545.6 N net push to eject formed pins from a die, relying on the internal spring to retract the 16 mm rod instantly when air is cut.
Flap Folding Arm
Extends 15 mm to fold heavy carton flaps, where the single PT1/8 air line simplifies valve routing in a crowded packaging cell.
Heavy Part Clamping
Holds a metal workpiece against a stop with a safe working load near 327 N, releasing instantly via spring return upon pressure loss.
Is the Airtac SSA Single-Acting Compact Cylinder SSA40X15SB the Right Cylinder?
When sizing this 40 mm bore actuator, compare its 545.6 N net push at 0.5 MPa against adjacent bores. Stepping down, the SSA32 yields 346.6 N; stepping up, the SSA50 provides 874.7 N. A practical safe working load is approximately 327 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 27.8 kg with a 2:1 safety margin.
Confirm the 15 mm stroke is within the 30 mm maximum standard limit for this series. Because it is spring-return, the SSA40X15SB does not hold a mid-stroke load on air loss—the spring drives the rod to its retracted rest position. For a held mid-stroke load, a double-acting SDA with an external rod lock is required. This unit features the -S magnet and the -B male M14x1.5 rod thread.
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 SSA40X15SB FAQ
It delivers a net push force of 545.6 N at 0.5 MPa and 796.9 N at 0.7 MPa. The operating pressure range is 0.2-1.0 MPa, requiring a minimum of 0.2 MPa to overcome the return spring.
No. If air is released, the internal spring drives the rod back to its retracted position. It cannot hold a mid-stroke load; an external rod lock or a double-acting SDA cylinder is needed for holding.
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