Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-50
The AirTAC SAIJ100X900-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates an 850-900mm usable travel window. Delivering 3927N of push force at 0.5MPa, it is equipped with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread for reliable sealing.
The external rear stopper allows fine end-position tuning during commissioning without swapping the cylinder or adding external stops. It uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The rear adjuster acts only as a travel stop, not a lock, so live air is required to hold the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100BX900-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100BX900-50 Is Used
Variable End-Stop Tuning
Dial in the exact 850-900mm retract position during machine commissioning to accommodate different product lengths without changing hardware.
Product Changeover
Quickly adjust the stroke stop on a packaging line to handle varying package sizes on the fly, minimizing downtime between runs.
Heavy-Duty Positioning
Leverage the 3927N push force at 0.5MPa to move heavy pallets or workpieces into a precise final position on an automated assembly line.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-50 the Right Cylinder?
Select this 100mm bore when an application requires substantial thrust, stepping up from the 63mm bore which provides 1559N at 0.5MPa. An adjustable stroke is chosen over a fixed SAI when you need variable end-stops for product changeover or setup tuning. To replace an ISO 15552 cylinder, match the 100mm bore, 900mm stroke, 50mm adjustment, PT G1/2 port, and mounting style. Note that no magnet is specified, so CMSE or DMSE sensors cannot be used without adding the -S option.
With a 900mm stroke, the M20x1.5 rod thread and 25mm rod diameter carry good side-load capacity, but an external guide is still recommended for the long unsupported travel. The cylinder operates at 30-800mm/s. For load-holding without live pressure, use an external rod lock or pilot-operated check valve, or select the SAIL or BSAI series instead.
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 SAIJ100BX900-50 FAQ
At 0.5MPa operating pressure, it provides 3927N of push force and 3681N of pull force. At 0.9MPa, the push force increases to 7068N.
The rear adjuster screw lets you trim the effective travel back by up to 50mm, creating an 850-900mm usable stroke window. It acts as a mechanical stop and does not lock the load without live air.
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