Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-40
The AirTAC SAIJ100X290-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 250 to 290 mm, allowing you to dial back the nominal 290 mm stroke by up to 40 mm during machine commissioning. This bore delivers robust thrust, generating 3927 N of push force at 0.5 MPa and reaching 7068 N at 0.9 MPa.
Built with a SUS304 stainless steel rod for superior corrosion resistance, this unit uses a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position without adding external stops, while the variable air cushions manage end-of-stroke deceleration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 290 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 SAIJ100BX290-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×290 | 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 SAIJ100BX290-40 Is Used
Machine Changeover
Quickly fine-tune the 250-290 mm travel window when switching production lines to different product sizes without replacing the cylinder.
Variable End-Stop Tuning
Dial in the exact retract position during initial commissioning using the rear screw, eliminating the need to bolt on custom external stops.
Heavy-Duty Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy fixtures into precise final positions on automated assembly lines.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-40 the Right Cylinder?
Select this 100 mm bore when an 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks sufficient force, but before stepping up to the 125 mm class. The adjustable 250-290 mm travel window is ideal for product changeovers where exact end-position tuning is required without physically swapping cylinders. Because the 290 mm stroke is significant, an external guide rail is recommended to support the load and prevent excessive side-loading on the rod.
For ISO 15552 dimensional interchangeability, verify the 100 mm bore, 290 mm stroke, 40 mm adjustment, PT port thread, and required mounting accessory. This SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Remember that the rear adjuster is a travel stop, not a locking device; it will not hold a load without live air pressure, so consider an external rod lock or SAIL cylinder for fail-safe load holding.
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 SAIJ100BX290-40 FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 290 mm down to 250 mm, creating a 250-290 mm window. It functions as a mechanical stop for position tuning, not a lock, and requires live air to hold the load.
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