Airtac SSA Single-Acting Compact Cylinder SSA40X25S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA40X25S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke25 mm
- Port sizePT1/8
- Acting typeSingle acting, push type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SSA Single-Acting Compact Cylinder SSA40X25S
The AirTAC SSA40X25S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring handles the retraction. Driven by a 40 mm bore, it generates 545.6 N of net push force at 0.5 MPa. Because the quoted output already subtracts the return-spring resistance, you can size directly to this figure without manual derating.
This model features a built-in piston magnet for AirTAC reed or electronic switches. Its short riveted body minimizes axial mounting depth in crowded machinery, while a fixed NBR bumper absorbs end-of-stroke shock without requiring adjustment.
Airtac SSA Single-Acting Compact Cylinder SSA40X25S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA40X25S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 SSA40X25S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 40 | 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).
Where the Airtac SSA Single-Acting Compact Cylinder SSA40X25S Is Used
Stamping Ejector
Uses the 545.6 N net push at 0.5 MPa to eject formed metal parts from a die, relying on the internal spring to retract the pin clear of the tooling.
Pallet Diverter
Extends a 25 mm stroke to push heavy pallets onto a secondary conveyor line, with the compact riveted body fitting neatly within the conveyor frame depth.
Carton Clamping Stop
Applies 796.9 N of force at 0.7 MPa to hold corrugated cartons momentarily for labeling, releasing automatically when air pressure is removed.
Is the Airtac SSA Single-Acting Compact Cylinder SSA40X25S the Right Cylinder?
When sizing this 40 mm bore unit, 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. This SSA40X25S configuration includes a 25 mm stroke (within the 30 mm maximum), a PT1/8 port, a 16 mm rod, and the -S magnet option.
Remember that air pressure extends the rod while the internal spring retracts it, meaning the cylinder cannot hold a mid-stroke load without live pressure. Operating pressure must be at least 0.2 MPa to overcome the spring, and the female M8x1.25 rod-end thread should be aligned to avoid side load.
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 SSA40X25S FAQ
This single-acting cylinder provides a net push force of 545.6 N at 0.5 MPa and 796.9 N at 0.7 MPa. These values already account for the internal return-spring resistance.
No. Air extends the rod and the spring retracts it, so it cannot hold a mid-stroke load without live pressure. It requires a minimum of 0.2 MPa to overcome the spring, and the -S magnet enables position detection with AirTAC reed or electronic switches.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SSA Cylinders
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