Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-40
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-40 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 SAIJ100BX400-40
The AirTAC SAIJ100X400-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 400 mm stroke that can be dialed back by up to 40 mm, creating a precise 360-400 mm usable travel window for commissioning flexibility.
This bore size utilizes a robust 25 mm rod and M20x1.5 thread to handle greater side loads, though the extended 400 mm stroke still requires an external guide for optimal longevity. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic switches if position feedback is needed.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-40 |
|---|---|
| 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 SAIJ100BX400-40
| 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 SAIJ100BX400-40 Is Used
Machine Setup Changeover
Fine-tune the 360-400 mm retract end-stop during machine setup to accommodate new product dimensions without physically swapping out the actuator.
Variable End-Stop Positioning
Dial in the exact end position during commissioning using the rear screw, perfect for applications requiring precise mechanical stops rather than fixed travel.
Product Size Adaptation
Quickly adjust the stroke window on a packaging line to handle varying package sizes on the fly, reducing downtime between production runs.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-40 the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder lacks thrust, as stepping up from 80 mm increases push force at 0.5 MPa from 2513 N to 3927 N. The adjustable stroke is ideal for product changeovers on a line, letting you fine-tune the retract end position without swapping the cylinder or adding external stops. For load-holding without live air pressure, note that this adjuster acts only as a travel stop; you would need a SAIL pneumatic lock, BSAI clamp-lock, or external rod lock.
When specifying an ISO 15552 replacement, match the 100 mm bore, 400 mm stroke, 40 mm adjustment range, PT port threads, and your required mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Because the stroke is 400 mm, ensure an external guide supports the load to prevent excessive rod wear.
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 SAIJ100BX400-40 FAQ
At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the 400 mm nominal stroke down to 360 mm. It only sets the travel end and does not lock the load without live air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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