Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX550-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- 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 SAIJ100 Adjustable Cylinder SAIJ100AX550-40S
The AirTAC SAIJ100X550-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. The built-in rear stopper allows you to dial back the 550mm nominal stroke by up to 40mm, creating a precise 510-550mm usable travel window for fine end-position tuning during commissioning.
This specific SKU includes a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and ships with a magnet (-S) for electronic DMSE or reed CMSE position sensing. It features variable air cushions at both ends to decelerate heavy loads, but note that the rear adjuster acts only as a travel stop, not a load-holding lock.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-40S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-40S
| 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 SAIJ100AX550-40S Is Used
Machine Changeover
Quickly adapt end-of-stroke positions for different product sizes on a packaging line without physically replacing the cylinder or adding external stops.
End-Position Tuning
Dial in the exact 510-550mm travel window during commissioning to perfectly time the heavy press motion without mechanical shimming.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-40S the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers without swapping the entire actuator. Because the nominal 550mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the rod.
For a true ISO 15552 dimensional replacement, match the 100mm bore, 550mm stroke, 40mm adjustment, PT G1/2 ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. If your application requires the load to be held without live air pressure, use a SAIL or BSAI lock cylinder instead of relying on the adjuster.
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 SAIJ100AX550-40S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 40mm. This provides a usable travel window of 510-550mm, allowing fine-tuning at commissioning without swapping the cylinder.
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