Airtac SSA Single-Acting Compact Cylinder SSA25X15SB
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X15SB is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø25mm 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.
- BoreØ25 mm
- Stroke15 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM5×0.8 (F) / M8×1.25 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA25X15SB
The AirTAC SSA25X15SB is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring retracts it. At 0.5 MPa it provides 216.9 N of net push output, a figure that already accounts for the return spring force. This 25 mm bore unit uses a 10 mm piston rod and requires only one air line and one solenoid port, which reduces fitting complexity and saves valuable manifold space.
This specific configuration includes a built-in piston magnet for position sensing with AirTAC reed or electronic switches, along with a male M8x1.25 threaded rod end. The short riveted body minimizes axial mounting depth in tight fixtures. End-of-stroke deceleration is handled by a fixed NBR bumper, not an adjustable air cushion.
Airtac SSA Single-Acting Compact Cylinder SSA25X15SB Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X15SB |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 15 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 (Ø25mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 217 N |
| 0.7 MPa | 315 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 SSA25X15SB
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 25 | 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 SSA25X15SB Is Used
Short-Stroke Part Clamping
Uses the 216.9 N net extension force to secure light metal workpieces in a machining fixture, automatically releasing parts when air pressure is removed.
Package Diverter Gate
Pushes lightweight cartons on a packaging line with a 15 mm stroke, relying on the single air line to simplify valve requirements in constrained spaces.
Ejector Station
Ejects molded components from an assembly zone, with the fixed NBR bumper absorbing the kinetic energy at the end of the extension motion.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X15SB the Right Cylinder?
When sizing this model, compare its 216.9 N net push at 0.5 MPa against adjacent bores: the SSA20 provides 134.1 N, while the SSA32 offers 346.6 N. A practical safe working load is roughly 130 N, allowing a 2:1 margin for a vertical lift of about 11.1 kg. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring.
Confirm the 25 mm bore, 15 mm stroke, and M5x0.8 port. The -S code denotes the integrated magnet, and the -B code specifies the male M8x1.25 rod thread. Remember the spring only retracts the rod to rest; it will not hold a mid-stroke load without live air pressure. Standard strokes cap at 30 mm.
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 SSA25X15SB FAQ
The net push force is 216.9 N at 0.5 MPa and 315.1 N at 0.7 MPa. These values already have the return spring force subtracted, giving you the true usable output for your design calculations.
Air pressure extends the rod, while the internal spring retracts it upon air release, requiring a minimum of 0.2 MPa to overcome the spring. The included -S magnet allows tracking by AirTAC reed or electronic switches.
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