Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40
The AirTAC SAIJ100X55-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 55 mm stroke that can be fine-tuned backward by up to 40 mm, yielding a highly versatile 15-55 mm usable travel window. Delivering 3927 N of push force at 0.5 MPa, it handles substantial loads while allowing precise end-position calibration during commissioning.
This specific SKU is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes integrated sensor grooves on both sides for flexible switch mounting. Mounting options span Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR footprints to streamline setup.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100BX55-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100BX55-40 Is Used
Product Changeover
Dial in the exact 15-55 mm travel window during line changeovers to accommodate different package sizes without replacing the actuator.
End-Position Tuning
Fine-tune the retract stop at machine commissioning to achieve precise endpoint alignment, avoiding the need for external stopper blocks.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for reliable actuation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40 the Right Cylinder?
Choose this 100 mm bore when 80 mm (2513 N push at 0.5 MPa) is insufficient or 125 mm (6136 N) is oversized. The 40 mm adjustment range is ideal for product-size changeovers on a line, letting you dial in the exact 15-55 mm travel window without swapping the cylinder or adding external stops. Note that the rear adjuster acts strictly as a travel stop, not a lock; the SAIJ does not hold loads without live air pressure, so consider a SAIL or BSAI cylinder for true pneumatic locking.
For ISO 15552 interchangeability, match the 100 mm bore, 55 mm stroke, 40 mm adjust, PT G1/2 port, and the desired mounting bracket. Because the 55 mm stroke is relatively short, side-load stress on the 25 mm rod thread is minimal, but an external guide remains recommended for heavy lateral loads.
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 SAIJ100BX55-40 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf.
The rear adjuster screw acts as an external stop that lets you shorten the effective travel from the 55 mm nominal stroke down to 15 mm. It sets the end position but does not lock the load without continuous air pressure.
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