Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-100 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 SAIJ100BX550-100
The AirTAC SAIJ100X550-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 450-550mm usable travel window. It delivers 7068N of push force at 0.9 MPa and 5497N at 0.7 MPa, making it suitable for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This specific SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. The rear adjuster allows you to fine-tune the retract end position during commissioning without adding external stops. Note that this adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-100 |
|---|---|
| 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 SAIJ100BX550-100
| 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 SAIJ100BX550-100 Is Used
Machine Changeover
Dial in the exact retract position within the 450-550mm window during product size changes without swapping physical hardware.
Heavy Fixture Positioning
Leverage the 7068N push force at 0.9 MPa to move heavy machining fixtures while fine-tuning the final end stop on the fly.
Assembly Line Setup
Establish precise variable end-stops during initial commissioning of automated assembly lines using the rear adjustment screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-100 the Right Cylinder?
Choose this 100mm bore cylinder when an application requires substantial force, such as 5497N at 0.7 MPa, alongside a variable end-stop. If your force requirements are lower, stepping down to an 80mm bore provides 3518N at 0.7 MPa. Conversely, larger loads up to 11045N at 0.9 MPa necessitate a 125mm bore. The adjustable rear screw is ideal for machine changeovers, allowing you to dial in the 450-550mm travel range without swapping the cylinder.
When replacing an ISO 15552 cylinder, match the 100mm bore, 550mm stroke, 100mm adjustment, PT port, and mounting interface. The SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Because the 550mm stroke is relatively long, an external guide is recommended to manage side-load and prevent rod binding. For applications requiring position holding without live air, consider the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
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 SAIJ100BX550-100 FAQ
The rear adjuster allows you to shorten the effective stroke by up to 100mm, providing a usable travel window of 450-550mm. This lets you fine-tune the end position at commissioning without adding external stops.
At 0.7 MPa it provides a push force of 5497N and a pull force of 3681N. At 0.9 MPa, the push force increases to 7068N.
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