Airtac SSA Single-Acting Compact Cylinder SSA40X5S
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA40X5S is a genuine single-acting COMPACT cylinder (single acting, push type) with a Ø40mm bore and 5mm 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.
- BoreØ40 mm
- Stroke5 mm
- Port sizePT1/8
- Acting typeSingle acting, push type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
About the Airtac SSA Single-Acting Compact Cylinder SSA40X5S
The AirTAC SSA40X5S is a compact single-acting push-type cylinder where air pressure extends the rod and an internal spring retracts it. It delivers 545.6 N of net push force at 0.5 MPa, with the return spring resistance already subtracted from this figure. A short 5 mm stroke handles rapid ejection and clamping tasks in confined fixtures.
This model features a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. The riveted body design minimizes axial mounting depth, requiring only one air line and solenoid port to drive the motion while the spring manages the return. A fixed NBR bumper absorbs end-of-stroke shock, as no adjustable air cushion is included.
Airtac SSA Single-Acting Compact Cylinder SSA40X5S Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA40X5S |
|---|---|
| Series | SSA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 mm |
| Acting type | Single acting, push type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm, Push)
| Pressure | Push force (net) |
|---|---|
| 0.5 MPa | 546 N |
| 0.7 MPa | 797 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 SSA40X5S
| SSA | Compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×5 | 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 SSA40X5S Is Used
Short-Stroke Part Clamping
Applies 545.6 N of net clamping pressure at 0.5 MPa to secure heavy machined components during milling operations.
Ejector Gate Diverter
Uses the rapid 5 mm extension to push lightweight packages off a sorting line, with the spring automatically retracting the rod.
Press-Fit Pin Insertion
Drives dowel pins into tight housings using the 796.9 N available at 0.7 MPa, relying on the fixed NBR bumper to absorb impact.
Is the Airtac SSA Single-Acting Compact Cylinder SSA40X5S the Right Cylinder?
When sizing this 40 mm bore unit, consider the neighboring options: the smaller SSA32 yields 346.6 N net push at 0.5 MPa, while the larger SSA50 provides 874.7 N at the same pressure. This SSA40X5S sits comfortably between them, offering a computed safe working load of roughly 327 N (about 60% of the 545.6 N figure) or a vertical lift capacity of approximately 27.8 kg with a 2:1 safety margin.
The 5 mm stroke is well within the 30 mm maximum standard limit for this series. Operating pressure must be 0.2-1.0 MPa, as at least 0.2 MPa is required to overcome the internal spring. Because the spring drives the rod to its retracted rest position upon air loss, this cylinder cannot hold a mid-stroke load; use a double-acting SDA with an external rod lock if position holding is required. This specific configuration includes the -S magnet and a female M8x1.25 rod-end thread on a 16 mm rod, with a PT1/8 port.
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 SSA40X5S FAQ
The net push force is 545.6 N at 0.5 MPa and 796.9 N at 0.7 MPa. These values already account for the internal return spring resistance, giving you the true usable output for your design calculations.
No, it cannot hold a mid-stroke load. As a single-acting push cylinder, the internal spring drives the rod back to its retracted position when air pressure drops below the 0.2 MPa minimum. An external rod lock or a double-acting SDA cylinder is required for position holding.
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