Airtac SSA Single-Acting Compact Cylinder SSA63X20
The AirTAC Airtac SSA Single-Acting Compact Cylinder SSA63X20 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
- 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 SSA63X20
The AirTAC SSA63X20 is a 63 mm bore compact single-acting push-type cylinder. Compressed air extends the 20 mm rod, while an internal mechanical spring handles the retraction, meaning the actuator is normally retracted at rest. It generates 1382.6 N of net push force at 0.5 MPa and 2006.1 N at 0.7 MPa, with the return spring counter-force already subtracted from these figures.
This model uses a short riveted body to minimize axial mounting depth where larger profile cylinders cannot fit. Because it requires only one air line and a single solenoid port to drive the motion, plumbing is drastically simplified. The fixed NBR bumper decelerates the piston near the stroke end but does not function as an adjustable air cushion.
Airtac SSA Single-Acting Compact Cylinder SSA63X20 Technical Specifications
| Model | Airtac SSA Single-Acting Compact Cylinder SSA63X20 |
|---|---|
| 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 SSA63X20
| 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 SSA63X20 Is Used
Heavy-Duty Stamping
Applies the 1382.6 N net push at 0.5 MPa to seat or stamp solid components firmly into housings within a 20 mm travel.
Riveted Body Clamping
Holds heavy metal workpieces securely against a jig using the 63 mm bore power, saving axial space with its compact riveted body.
Pallet Ejection
Pushes loaded pallets off a conveyor roller bed using a single air line, relying on the internal spring to retract the rod clear of the path.
Is the Airtac SSA Single-Acting Compact Cylinder SSA63X20 the Right Cylinder?
When sizing this 63 mm bore actuator, verify the 1382.6 N net push at 0.5 MPa is sufficient for your application, which translates to a safe working load of roughly 830 N at a 2:1 margin or a vertical lift capacity of about 70.5 kg. If your fixture requires less force, the neighboring SSA50 bore provides 874.7 N at 0.5 MPa. As the largest bore in this single-acting series, stepping up beyond 63 mm is not an option, so for higher energy demands an external shock absorber should be added.
Confirm the 20 mm stroke is within the 30 mm maximum standard limit for this series. This specific configuration lacks the -S magnet, so it cannot accept position sensing without changing to the -S variant for reed or electronic switches. The rod end features a female M10x1.5 thread (or male M18x1.5 on the B option), the port is PT1/4, and operating pressure must be at least 0.2 MPa to overcome the internal spring.
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 SSA63X20 FAQ
The SSA63X20 provides 1382.6 N of net push force at 0.5 MPa and 2006.1 N at 0.7 MPa. These values already account for the subtraction of the internal return spring force, 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 rest position upon air loss. Operating pressure must be maintained between 0.2 and 1.0 MPa to overcome the spring and extend the rod.
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