Airtac SSA Single-Acting Compact Cylinder SSA63X20S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA63X20S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø63mm bore and 20mm 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
- Stroke20 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 SSA63X20S
The AirTAC SSA63X20S is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. At 0.5 MPa it provides 1382.6 N of net push, and 2006.1 N at 0.7 MPa. The short riveted body saves axial mounting depth where a round-body or profile cylinder will not fit, making it ideal for heavy-duty short-stroke tasks.
Because it is spring-returned, you only need one air line and one solenoid port to drive the motion, which cuts down on fittings and simplifies your valve setup. The quoted force is already net of the return spring, giving you a real design figure rather than raw air pressure. This 63 mm bore unit features a 20 mm piston rod, a PT1/4 port, and a built-in magnet for AirTAC reed or electronic switches.
Airtac SSA Single-Acting Compact Cylinder SSA63X20S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA63X20S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 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 SSA63X20S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 SSA63X20S Is Used
Heavy-Duty Stamping
Apply the 1382.6 N net push at 0.5 MPa to seat or stamp components securely in a tight fixture.
Pallet Ejection
Use the spring-return action to push loaded pallets off a conveyor line with minimal plumbing.
Rigid Clamping
Hold heavy steel frames in place for welding operations, relying on the 20 mm stroke for rapid actuation.
Is the Airtac SSA Single-Acting Compact Cylinder SSA63X20S the Right Cylinder?
When sizing this model, consider the neighboring bores. Stepping down, the SSA50 offers 874.7 N of net push at 0.5 MPa, while this SSA63 provides 1382.6 N at the same pressure. If your application requires even more force, this 63 mm bore is the largest available in the single-acting series. The standard stroke ceiling is 30 mm, so this 20 mm stroke fits well within limits.
Remember that on air loss the spring drives the rod to its retracted rest position; it does not hold a mid-stroke load. For a held mid-stroke load use a double-acting SDA with an external rod lock. This SSA63X20S configuration includes the -S magnet for position sensing and a female M10x1.5 rod-end thread. A fixed NBR bumper decelerates the stroke end but is not an adjustable air cushion.
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 SSA63X20S FAQ
The SSA63X20S provides a net push force of 1382.6 N at 0.5 MPa and 2006.1 N at 0.7 MPa. These figures already subtract the return spring force, giving you a safe working load of roughly 830 N, or a vertical lift of about 70.5 kg with a 2:1 margin.
No, on air loss the internal spring drives the rod back to its retracted rest position. It requires at least 0.2 MPa to overcome the spring. It does not hold a mid-stroke load; for that you need a double-acting SDA with an external rod lock.
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