Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm 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
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40S
The AirTAC SAIJ100X400-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 360-400 mm, letting you fine-tune the retract end-position by up to 40 mm during commissioning without adding external stops. Equipped with a carbon steel rod and a PT tapered port, it delivers 7068N of push force at 0.9 MPa.
This -S variant includes a magnet for position sensing with CMSE reed or DMSE electronic switches. The extruded aluminum barrel integrates sensor grooves on both sides. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an external rod lock or the BSAI clamp-lock series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100X400-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SAIJ100X400-40S Is Used
Variable End-Stop Tuning
Dial in the exact 360-400mm retract position during machine commissioning to accommodate varying product lengths without physical hardware changes.
Product Changeover
Quickly shorten the effective stroke by up to 40mm on automated lines when switching to smaller components, maintaining precise positioning.
Heavy-Duty Assembly
Leverage the 7068N push force at 0.9 MPa for pressing or joining operations while retaining the flexibility to adjust the travel end.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40S the Right Cylinder?
Choose this 100mm bore when you need substantial thrust, stepping up from a 63mm bore that yields 2805N push at 0.7 MPa. The adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product-size changeovers, preventing the need to swap out a fixed-stroke SAI cylinder. When matching ISO 15552 dimensions, specify the 100mm bore, 400mm stroke, 40mm adjustment, PT G1/2 ports, and the -S magnet.
Because the 400mm stroke is substantial, the 25mm rod diameter and M20x1.5 thread handle high side loads, but an external guide is still recommended to prevent binding. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
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 SAIJ100X400-40S FAQ
At 0.9 MPa operating pressure, this 100mm bore cylinder generates 7068N of push force and 6624N of pull force. It can deliver a maximum of 801 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 400mm nominal stroke down to 360mm. It is a travel stop, not a lock, so the cylinder requires live air to maintain position.
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