Airtac SSA Single-Acting Compact Cylinder SSA20X15SB
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA20X15SB is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø20mm bore and 15mm 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.
- BoreØ20 mm
- Stroke15 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push type
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SSA Single-Acting Compact Cylinder SSA20X15SB
The AirTAC SSA20X15SB is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It generates 134.1 N of net push force at 0.5 MPa, meaning the return spring's resistance is already subtracted from the raw air power. This 20 mm bore, 15 mm stroke model saves valuable axial mounting depth in crowded fixtures due to its short riveted body.
Equipped with a built-in piston magnet (-S), it supports position sensing using either a reed or electronic switch. The male-thread piston rod (-B) provides an M6x1.0 mounting interface, replacing the default female M4x0.7 thread. A fixed NBR bumper decelerates the stroke end, offering end-of-travel protection rather than an adjustable air cushion.
Airtac SSA Single-Acting Compact Cylinder SSA20X15SB Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA20X15SB |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 mm |
| Acting type | Single acting, push type |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 (Ø20mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 134 N |
| 0.7 MPa | 197 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 SSA20X15SB
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 SSA20X15SB Is Used
Short-Stroke Part Ejection
Uses the 134.1 N net push at 0.5 MPa to positively eject machined components from a tight fixture, saving axial depth where space is restricted.
Transfer Line Diverter
The single air line and spring-return mechanism simplify valve plumbing for a diverter arm on a high-density conveyor system.
PCB Edge Clamping
Secures delicate circuit boards during assembly using the male M6x1.0 threaded rod end, while the fixed NBR bumper prevents harsh impact.
Is the Airtac SSA Single-Acting Compact Cylinder SSA20X15SB the Right Cylinder?
When sizing this model, evaluate the neighbouring bores to match your load requirements. Stepping down, the SSA16 provides 80.5 N of net push at 0.5 MPa, while stepping up to the SSA25 yields 216.9 N at the same pressure. Based on the 134.1 N rating at 0.5 MPa, a safe working load is approximately 80 N, allowing a vertical lift of roughly 6.8 kg with a 2:1 safety margin.
This configuration features a 20 mm bore, 15 mm stroke, and an M5x0.8 port. The 30 mm maximum standard stroke ceiling is respected. Because it is spring-return, the SSA20X15SB cannot hold a mid-stroke load without live air pressure; an external rod lock would be required for that function. Confirm the built-in magnet and male M6x1.0 rod thread suit your mounting and sensing needs.
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 SSA20X15SB FAQ
The net push force is 134.1 N at 0.5 MPa and 196.9 N at 0.7 MPa. These figures already account for the internal return spring resistance, giving you a real design value for your pushing application.
No. As a single-acting push cylinder, the internal spring drives the rod back to its retracted rest position when air is released. It requires a minimum of 0.2 MPa to overcome the spring and cannot hold a mid-stroke load without live pressure.
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