Airtac SAIJ100 Adjustable Cylinder SAIJ100BX375-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX375-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX375-40
The AirTAC SAIJ100X375-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5MPa. It features a SUS304 stainless steel rod and PT tapered ports. By turning the external stopper screw, you achieve a usable travel window of 335 to 375mm, enabling fine end-position tuning at commissioning without swapping out the entire cylinder.
Because this is a 375mm stroke, the 25mm rod diameter and M20x1.5 rod thread provide robust support, yet an external guide is still recommended to handle side loads over this long unsupported travel. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE or DMSE switches if position feedback is later required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX375-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX375-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 375 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 SAIJ100BX375-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×375 | 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 SAIJ100BX375-40 Is Used
Variable End-Stop Tuning
Dial in the exact retraction point within the 335-375mm window during machine commissioning to perfect part ejection without adding external mechanical stops.
Product Changeover
Quickly adjust the stroke by up to 40mm on a packaging line to accommodate different carton sizes, minimizing downtime between production runs.
Heavy-Duty Positioning
Leverage the 3927N push force at 0.5MPa to move heavy pallets or fixtures, using the fine-tune adjustment to gently seat the load against a backstop.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX375-40 the Right Cylinder?
Select this 100mm bore when an 80mm cylinder (providing 2513N push at 0.5MPa) lacks thrust, but a 125mm bore is physically oversized. The 40mm adjustment range is ideal for product-size changeovers on a line, letting you dial in the exact 335-375mm end-stop on the fly instead of machining external stops. When matching an ISO 15552 replacement, verify the 375mm stroke, 40mm adjuster, PT port thread, and your required mounting bracket from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Remember that the rear adjuster functions strictly as a travel stop, not a lock. The cylinder cannot hold a load without live air pressure; for true load-holding, consider an external rod lock or AirTAC SAIL and BSAI 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 SAIJ100BX375-40 FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It can reach a maximum push force of 7068N at 0.9MPa.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective stroke back from the 375mm nominal length, providing a usable travel window of 335 to 375mm for fine-tuning end positions without replacing the cylinder.
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