Airtac SSA Single-Acting Compact Cylinder SSA12X20B
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA12X20B is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø12mm 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.
- BoreØ12 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA12X20B
The AirTAC SSA12X20B is a compact single-acting push-type cylinder where air extends the rod and an internal spring retracts it. It generates 46.5 N of net push force at 0.5 MPa, meaning the return spring's resistance is already subtracted from the raw air pressure. This makes it a real design figure for your calculations rather than a theoretical maximum.
Designed for tight spaces, the short riveted body saves axial mounting depth where larger profile cylinders will not fit. Because it only needs one air line and one solenoid port to drive the motion, you reduce fitting complexity and valve costs. This specific SKU features a male M5x0.8 piston rod thread and operates at speeds between 50-500 mm/s.
Airtac SSA Single-Acting Compact Cylinder SSA12X20B Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA12X20B |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø12 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 (Ø12mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 47 N |
| 0.7 MPa | 69 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 SSA12X20B
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 12 | 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 SSA12X20B Is Used
Small Part Ejection
Uses the 46.5 N net push at 0.5 MPa to eject small molded components from a fixture without requiring complex dual-line plumbing.
Light Diverting
Employs the male M5x0.8 rod thread to mount a custom tip that deflects lightweight packages on a conveyor in confined spaces.
Test Fixture Clamping
Applies a safe working load of roughly 28 N, about 60% of the 0.5 MPa figure, to secure delicate samples during laboratory testing.
Is the Airtac SSA Single-Acting Compact Cylinder SSA12X20B the Right Cylinder?
When sizing this model, consider the neighboring bore for your force requirements. Stepping up to the SSA16 provides 80.5 N of net push at 0.5 MPa, while the 12 mm bore offered here is the smallest available option in the series. Keep in mind the 30 mm maximum standard stroke ceiling; this 20 mm stroke fits well within limits.
This configuration includes the B option for a male-threaded rod end and lacks the S option, meaning it has no piston magnet and cannot support reed or electronic switches. Operating pressure must be at least 0.2 MPa to overcome the return spring. Remember that on air loss the spring drives the rod back to rest; it does not hold a mid-stroke load without live pressure.
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 SSA12X20B FAQ
The net push force is 46.5 N at 0.5 MPa and 69.2 N at 0.7 MPa. These values already account for the internal return spring resistance, giving you a true design figure for your application.
No, this specific SKU does not include the S option for a piston magnet, so it cannot support reed or electronic switches. You would need the SSA12X20BS variant to enable position sensing.
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