Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-75 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75
The AirTAC SAIJ100X400-75 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 400 mm stroke that can be fine-tuned backward by up to 75 mm, yielding a usable travel window of 325 to 400 mm. The extruded aluminum barrel features sensor grooves on both sides, and the SUS304 stainless steel rod (option B) provides excellent corrosion resistance for harsh environments.
This model uses PT tapered port threads (G1/2) and includes variable air cushions at both ends to manage deceleration. The rear adjuster acts purely as a mechanical stop to set the travel end during commissioning or product changeovers without swapping the cylinder. It is dimensionally interchangeable per ISO 15552 and supports mounting options including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75 |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75
| 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 SAIJ100BX400-75 Is Used
Product Changeover
Dial in the 325-400 mm travel window during format changes on a packaging line, allowing rapid adaptation to different carton sizes without changing the cylinder.
Variable End Stops
Use the rear mechanical stop to set precise retract limits on an automated assembly station, avoiding the need to fabricate external bumpers.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75 the Right Cylinder?
If your setup demands less force, 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 at the same pressure. The adjustable stroke is ideal for machines requiring variable end-stops or fine-tuning at commissioning, eliminating the need to bolt on external stops or buy a fixed-stroke SAI cylinder.
Because the 400 mm stroke is relatively long, the 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading and premature seal wear. Remember that the rear adjuster and air cushions only set the travel end and manage deceleration; they do not hold the load without live air. For dead-load holding, consider an AirTAC SAIL or BSAI cylinder. To match this exact ISO 15552 replacement, specify: 100 mm bore, 400 mm stroke, 75 mm adjustment, PT port thread, desired mounting, and no magnet.
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 SAIJ100BX400-75 FAQ
At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back from the 400 mm nominal stroke by up to 75 mm, creating a 325-400 mm usable window. It sets the end position but does not lock the load without live air pressure.
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