Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-40S 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 SAIJ100X290-40S
The AirTAC SAIJ100X290-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. By turning the rear stopper screw, you can fine-tune the effective travel within a 250 to 290 mm window without swapping out the cylinder. This makes it highly effective for product changeovers where exact end-positioning is critical.
This bore features a 25 mm carbon steel rod with an M20x1.5 thread, paired with a PT tapered G1/2 port to handle high flow. Because it includes the -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors housed in the dual-side barrel grooves. The rear adjuster acts strictly as a travel stop to set deceleration limits, not as a lock, so live air is required to hold the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-40S |
|---|---|
| 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 SAIJ100X290-40S
| 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 SAIJ100X290-40S Is Used
Product Size Changeovers
Dial in the 250-290 mm stroke window during format changes on packaging lines, accommodating different carton sizes without replacing hardware.
Commissioning Fine-Tuning
Trim the end-of-travel position by up to 40 mm during machine setup to perfectly align heavy press tools under the 7068N push force at 0.9 MPa.
Variable End-Stop Positioning
Adjust the retract distance on the fly for automated assembly stations that need precise mechanical stops rather than relying solely on sensor signals.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-40S the Right Cylinder?
Choose this 100 mm bore when a 80 mm cylinder (providing 2513N push at 0.5 MPa) lacks the necessary thrust, but you want to avoid stepping up to a 125 mm unit. The adjustable 250-290 mm travel window is selected over a fixed SAI cylinder when a machine requires variable end-stops or commissioning fine-tune capabilities. For a true drop-in replacement, match the 100 mm bore, 290 mm stroke, 40 mm adjustment, PT G1/2 port, and -S magnet.
At 290 mm of travel, the unsupported 25 mm rod is subject to bending under heavy lateral loads, so an external guide rail should accompany the cylinder. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets. If your process requires holding a load without continuous air pressure, use a SAIL pneumatic lock or a BSAI clamp-lock instead of relying on the rear stopper.
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 SAIJ100X290-40S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster screw allows you to shorten the nominal 290 mm stroke by up to 40 mm, creating an effective travel window of 250 to 290 mm. This stopper sets the travel end and deceleration point, but it does not lock the load without live air pressure.
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