Airtac SSA Single-Acting Compact Cylinder SSA40X25
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA40X25 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
About the Airtac SSA Single-Acting Compact Cylinder SSA40X25
The AirTAC SSA40X25 is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It provides 545.6 N of net push at 0.5 MPa, making it suitable for robust clamping and ejection tasks. Because it is spring-returned, you only need one air line and one solenoid port, which cuts down on fittings and simplifies your valve setup.
This model features a 16 mm piston rod, a PT1/8 port, and a short riveted body that minimizes axial mounting depth in crowded machinery. It uses a fixed NBR bumper to decelerate the stroke end rather than an adjustable air cushion. The quoted force is already net of the return spring, giving you a reliable design figure rather than raw pneumatic pressure.
Airtac SSA Single-Acting Compact Cylinder SSA40X25 Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA40X25 |
|---|---|
| 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 SSA40X25
| 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 SSA40X25 Is Used
Stamping Pin Ejection
Uses the 545.6 N net push at 0.5 MPa to eject formed metal pins from a die, relying on the internal spring to retract the rod quickly between cycles.
Pallet Diverter Gate
Extends 25 mm to push heavy pallets onto a secondary line, where the compact riveted body fits neatly within the conveyor frame depth.
Heavy Carton Clamping
Applies over 796.9 N of force at 0.7 MPa to hold large packaging cartons stationary during automated banding operations.
Is the Airtac SSA Single-Acting Compact Cylinder SSA40X25 the Right Cylinder?
When sizing this bore, compare it to its neighbors: the SSA32 yields 346.6 N at 0.5 MPa, while the SSA50 provides 874.7 N at 0.5 MPa. If your application requires a safe working load around 327 N, this 40 mm bore is ideal, offering roughly a 2:1 margin for a 27.8 kg vertical lift. Remember that the maximum standard stroke for this series is 30 mm.
This configuration has a 25 mm stroke, a female M8x1.25 rod-end thread, and no piston magnet, so it cannot accept a magnetic switch without the -S option. Because the spring drives the rod back when air is released, it will not hold a mid-stroke load without live pressure or an external locking device.
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 SSA40X25 FAQ
The SSA40X25 delivers a net push force of 545.6 N at 0.5 MPa and 796.9 N at 0.7 MPa. These figures already account for the internal return spring resistance, giving you the true usable output.
No, the internal spring drives the rod to its retracted rest position when air is released. It requires at least 0.2 MPa to overcome the spring and does not lock or hold a mid-stroke load without live pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SSA Cylinders
Request a Quote for Airtac SSA Single-Acting Compact Cylinder SSA40X25
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.