Airtac SSA Single-Acting Compact Cylinder SSA25X25S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA25X25S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø25mm 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.
- BoreØ25 mm
- Stroke25 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 SSA25X25S
The AirTAC SSA25X25S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring handles the retraction. This spring-return design requires only one air line and a single solenoid port to operate, which reduces fitting complexity and frees up valuable space inside crowded machine fixtures. At 0.5 MPa it generates 216.9 N of net push output, a figure that already accounts for the force required to compress the internal spring.
The short riveted body provides a minimal axial mounting footprint compared to traditional round-body alternatives, making it highly effective for tight automated assemblies. This specific model includes a built-in piston magnet (the -S option) allowing direct integration with AirTAC reed or electronic solid-state switches mounted directly into the body sensor grooves. A fixed NBR bumper manages end-of-stroke deceleration, and the 10 mm piston rod features a female M5x0.8 thread on the rod end.
Airtac SSA Single-Acting Compact Cylinder SSA25X25S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA25X25S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 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 SSA25X25S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 25 | 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 SSA25X25S Is Used
Short-Stroke Part Clamping
Uses the 216.9 N net push at 0.5 MPa to secure light metal workpieces against a fixed stop during machining operations.
Package Diverting Gate
Extends 25 mm to push cartons off a main conveyor belt, relying on the internal spring to quickly retract the gate between cycles.
Vertical Lift Ejector
Lifts components weighing up to 11.1 kg vertically out of a fixture, taking advantage of the single air line to simplify overhead plumbing.
Is the Airtac SSA Single-Acting Compact Cylinder SSA25X25S the Right Cylinder?
When sizing this unit, evaluate the neighboring bore options to ensure optimal performance. Dropping down to the 20 mm bore reduces the net push force to 134.1 N at 0.5 MPa, whereas stepping up to the 32 mm bore increases it significantly to 346.6 N at 0.5 MPa. The 25 mm bore strikes a middle ground, offering a safe working load of roughly 130 N (about 60 percent of the 216.9 N figure) and a vertical lift capacity of approximately 11.1 kg when applying a 2:1 safety margin.
This configuration features a 25 mm stroke, which sits comfortably below the 30 mm maximum standard stroke ceiling for this series. Because it is spring-returned, the SSA25X25S cannot hold a mid-stroke load or lock in place without live air pressure; the spring actively drives the rod back to its retracted rest position upon air loss. The bore dictates the M5x0.8 air port, and the included -S magnet enables position sensing. Operating pressure must be maintained between 0.2 and 1.0 MPa, as a minimum of 0.2 MPa is required simply to overcome the return spring.
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 SSA25X25S FAQ
The net push force is 216.9 N at an operating pressure of 0.5 MPa, and 315.1 N at 0.7 MPa. These values already have the return spring force subtracted, representing the true usable output for your design calculations.
No, the SSA25X25S is a single-acting push cylinder with spring return. When air pressure is released, the internal spring drives the rod back to its fully retracted rest position. It cannot hold a mid-stroke load without live air 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 SSA25X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.