Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20
The AirTAC SAIJ100X550-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel. It provides a usable 530-550 mm movement window, allowing you to dial back the 550 mm nominal stroke by up to 20 mm during machine commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles substantial workloads while using a carbon steel rod with an M20x1.5 thread for robust side-load resistance.
This model includes variable air cushions at both ends to manage kinetic energy, but the rear adjuster acts strictly as a travel stop and does not hold the load without live air. For position holding without pneumatic pressure, consider an external rod lock or the AirTAC BSAI clamp-lock series. The extruded aluminum barrel features sensor grooves on both sides for flexible CMSE or DMSE switch mounting.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20 Is Used
Product Changeover
Dial in the 530-550 mm stroke window during line changeovers to accommodate different package lengths without replacing the actuator.
End-Stop Tuning
Fine-tune the exact retracted position of a transfer pusher at commissioning, using the rear screw to set the precise 20 mm travel trim.
Heavy Material Handling
Leverage the 3927 N push force at 0.5 MPa to move heavy pallets or workpieces, relying on the robust 25 mm carbon steel rod.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires 3927 N of push force at 0.5 MPa and exact end-position tuning. If your process needs less force, stepping down to an 80 mm bore yields 2513 N; if you need more power, a 125 mm bore provides 6136 N. The adjustable rear stopper is ideal for product changeovers, letting you fine-tune the 530-550 mm travel window without swapping the cylinder or adding external mechanical stops.
Because the 550 mm stroke is relatively long, ensure proper external guiding to prevent rod sagging and premature seal wear. When replacing an ISO 15552 cylinder, match the 100 mm bore, 550 mm stroke, 20 mm adjustment range, PT G1/2 port thread, and the required mounting style from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This configuration uses a standard carbon steel rod and no internal magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-20 FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 801 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 550 mm nominal stroke by up to 20 mm, creating a 530-550 mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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