
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA16X25 is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø16mm bore and 25mm 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.
The AirTAC SSA16X25 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 generates 80.5 N of net push output, with the return spring force already subtracted to give you a real design figure. This 16 mm bore unit uses a 6 mm rod and an M5x0.8 port.
Because the spring handles the return stroke, you only need a single air line and one solenoid valve port to drive the motion, cutting down on fittings and simplifying your valve setup. The short riveted body saves axial mounting depth in crowded fixtures, while a fixed NBR bumper absorbs the end-of-stroke shock without being adjustable.
| Model | Airtac SSA Single-Acting Compact Cylinder SSA16X25 |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø16 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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.
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 81 N |
| 0.7 MPa | 121 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.
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×25 | 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).
Uses the 80.5 N net push at 0.5 MPa to reliably kick lightweight machined components out of a tight fixture.
Employs the 25 mm stroke to push small cartons off a narrow conveyor belt, relying on the spring return for simple plumbing.
Secures sheet metal or thin plates during a brief stamping cycle, with the compact riveted body fitting into low-clearance dies.
When sizing this model, look at its neighbors: stepping down to the SSA12 yields 46.5 N net push at 0.5 MPa, whereas stepping up to the SSA20 provides 134.1 N. The 25 mm stroke sits safely under the 30 mm maximum limit for this series. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring.
This specific configuration has no piston magnet, so it cannot support position sensing without upgrading to the -S variant. It features a female M3x0.5 rod-end thread. Keep in mind that upon air loss the spring drives the rod back to its retracted state; it will not hold a mid-stroke load without external mechanical locking.
Quick checklist
This model provides a net push force of 80.5 N at 0.5 MPa and 120.7 N at 0.7 MPa. These values already account for the internal return spring resistance, giving you a safe working load of roughly 48 N or a vertical lift capacity of about 4.1 kg with a 2:1 margin.
No, this specific SKU lacks a piston magnet and cannot accept sensing. You must select the -S option code to add a magnet for AirTAC reed or electronic switches. Additionally, it requires a minimum of 0.2 MPa operating pressure to overcome the return spring.
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