Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-75
The AirTAC SAIJ100X240-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 240 mm stroke by up to 75 mm for a usable travel window of 165-240 mm. Delivering 3927 N of push force at 0.5 MPa, it handles heavy actuation tasks with ease. The SUS304 stainless steel rod (option B) provides excellent corrosion resistance for demanding environments.
This model features a PT tapered G1/2 port and variable air cushions at both ends to manage impact loads. The rear adjuster acts purely as a mechanical stop to fine-tune end positions during commissioning; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 240 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 SAIJ100BX240-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×240 | 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 SAIJ100BX240-75 Is Used
Machine Setup & Changeover
Dial in the exact 165-240 mm end-stop during machine commissioning or product changeover without physically swapping cylinders or adding external spacers.
Variable Product Diverter
Adjust the retract position on the fly to accommodate different package sizes on a conveyor line, ensuring precise diversion force up to 7068 N.
Heavy Assembly Press
Fine-tune the pressing depth of heavy components, leveraging the 100 mm bore's robust thrust while relying on the SUS304 rod for durability.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-75 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial thrust (up to 7068 N push at 0.9 MPa) combined with flexible end-position tuning. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The 75 mm adjustment range is particularly useful for prototyping or production lines handling varying product sizes, eliminating the need to swap out a fixed-stroke SAI cylinder for minor position changes.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 240 mm stroke, 75 mm adjustment, PT G1/2 port, and required mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because the stroke is 240 mm, ensure adequate side-load support by guiding the load externally to prevent rod damage. Note that without a magnet (-S), this unit cannot host CMSE or DMSE sensors.
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 SAIJ100BX240-75 FAQ
The rear adjuster screw lets you shorten the effective travel from the nominal 240 mm down to 165 mm, creating a 75 mm adjustable window. It functions as a mechanical stop to set the end position and does not lock or hold the load without continuous air pressure.
At a standard 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. If pressure is increased to 0.9 MPa, the push force reaches 7068 N.
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