Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-40S
The AirTAC SAIJ100X140-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5MPa. By turning the rear stopper screw, you can trim the effective travel anywhere within a 100 to 140mm window. This eliminates the need to physically swap cylinders or bolt on external stops when dialing in final end positions during commissioning.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a built-in magnet for CMSE and DMSE sensors. It utilizes PT tapered port threads (G1/2) and relies on a reduced mounting set—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting FB, CA, CB, and CR. The rear screw acts strictly as a travel stop, meaning it cannot hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAIJ100AX140-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SAIJ100AX140-40S Is Used
Precision End-Position Tuning
Dial in the exact retract distance within a 100-140mm window during machine commissioning, using the rear screw to fine-tune the stroke without changing the cylinder.
Product-Size Changeover
Quickly adapt automated lines to different product lengths by adjusting the travel stopper up to 40mm, minimizing downtime between production runs.
Heavy-Duty Forming Stops
Leverage the 3927N push force at 0.5MPa to drive heavy tooling, relying on the adjustable stop to set precise mechanical endpoints for varying material thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-40S the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder (providing 2513N push at 0.5MPa) lacks the necessary thrust, but a 125mm bore is physically too large. The 40mm adjustment range is perfect for applications requiring variable end-stops or frequent product-size changeovers, giving you a 100-140mm usable travel window without committing to a fixed-stroke SAI cylinder. For a true ISO 15552 replacement match, verify the 140mm stroke, 40mm adjust code, PT port thread, and the -S magnet.
Because the stroke is 140mm, side-load stress is moderate, but the robust 25mm rod and M20x1.5 rod thread help handle higher off-center loads. If your application requires the load to be held mechanically in place without continuous air pressure, the SAIJ adjuster will not act as a brake; you should instead look at the SAIL (air-released lock) or BSAI (clamp-lock) series.
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 SAIJ100AX140-40S FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.9MPa, the push force increases to 7068N.
The rear stopper screw allows you to shorten the 140mm nominal stroke by up to 40mm, providing an effective adjustable travel window of 100 to 140mm. It functions as a travel stop and does not lock the load without live air pressure.
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