Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40
The AirTAC SAIJ100X155-40 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 115-155 mm usable travel window, letting you dial back the nominal 155 mm stroke by up to 40 mm during machine setup. Delivering 3927 N of push force at 0.5 MPa, it handles heavy actuation with precision.
This model uses a SUS304 stainless steel rod for superior corrosion resistance in wet or washdown environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed and DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 155 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 SAIJ100BX155-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×155 | 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 SAIJ100BX155-40 Is Used
Machine Changeover
Fine-tune the 115-155 mm travel window during product size changes to set new end positions without mechanical rebuilds.
Heavy Assembly Press
Leverage 3927 N of push force at 0.5 MPa for pressing components, using the rear stopper to dial in exact contact depth.
Washdown Positioning
Rely on the SUS304 stainless steel rod for rigid positioning in food or chemical washdown areas without rod degradation.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40 the Right Cylinder?
Choose this 100 mm bore when you need 3927 N of push force at 0.5 MPa. If your application requires less force, stepping down to the 80 mm bore yields 2513 N, while moving up to the 125 mm bore provides 6136 N. The adjustable stroke is ideal for product changeovers, allowing you to fine-tune the end position without swapping cylinders or adding external stops.
Because the 155 mm stroke is below the 300 mm threshold, side-load risks are moderate, but an external guide is still recommended for heavy loads. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. This configuration features PT tapered ports and a SUS304 rod.
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 SAIJ100BX155-40 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 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw lets you shorten the 155 mm nominal stroke by up to 40 mm, creating a 115-155 mm travel window. It acts as a mechanical stop for end-position tuning and is not a lock.
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