Airtac SSA Single-Acting Compact Cylinder SSA63X25S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA63X25S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø63mm 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.
- BoreØ63 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeSingle acting, push type
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA63X25S
The AirTAC SSA63X25S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal mechanical spring retracts it. As the largest bore in this series, it generates 1382.6 N of net push force at 0.5 MPa and 2006.1 N at 0.7 MPa. The quoted output already subtracts the return-spring resistance, giving you a reliable design figure rather than raw pneumatic area math.
This 63 mm bore unit features a short riveted body that drastically reduces axial mounting depth in crowded machinery. It requires only one air line and one solenoid port to drive the motion, cutting fitting complexity. The integrated -S piston magnet enables position detection with AirTAC reed or electronic switches, while a fixed NBR bumper decelerates the stroke end without relying on adjustable air cushions.
Airtac SSA Single-Acting Compact Cylinder SSA63X25S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA63X25S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø63 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push type |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 (Ø63mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 1383 N |
| 0.7 MPa | 2006 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 SSA63X25S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 63 | 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 SSA63X25S Is Used
Heavy-Duty Stamping Ejector
Ejects thick metal blanks from a press die using 1382.6 N of thrust at 0.5 MPa, with the internal spring retracting the rod clear of the tooling between cycles.
Automated Welding Clamp
Secures heavy structural frames for robotic welding, utilizing the 25 mm stroke to push parts firmly into locators before the spring releases the hold.
Pallet Lift Stopper
Acts as a robust pop-up stop on a conveyor line, extending to halt 70.5 kg vertical loads with a 2:1 safety margin before retracting flush into the deck.
Is the Airtac SSA Single-Acting Compact Cylinder SSA63X25S the Right Cylinder?
When sizing this model, evaluate the neighbouring bores to match your actual load. Stepping down, the SSA50 provides 874.7 N of net push at 0.5 MPa, which is often insufficient if you require the full 830 N safe working load (approximately 60 percent of the 1382.6 N figure) that this 63 mm bore handles comfortably. There is no larger standard single-acting bore in this family, making this the ceiling for compact spring-return thrust.
This configuration has a 25 mm stroke, well within the 30 mm maximum limit for the series. It operates between 0.2 and 1.0 MPa, needing at least 0.2 MPa to overcome the internal spring. The bore dictates a PT1/4 port and a 20 mm rod. The -S magnet is present for sensing, and the rod end has a female M10x1.5 thread. Remember that the spring drives retraction upon air loss; it will not hold a mid-stroke load without live pressure or an external lock.
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 SSA63X25S FAQ
The net push force is 1382.6 N at 0.5 MPa and 2006.1 N at 0.7 MPa. These values already account for the resistance of the internal return spring, representing the actual usable thrust available for your application.
No. 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; for load holding without live pressure, you need an external rod lock or a double-acting cylinder.
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