Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40S
The AirTAC SAIJ100X900-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster, providing a usable travel window of 860 to 900 mm. It delivers a robust 3927 N push force at 0.5 MPa and 7068 N at 0.9 MPa, making it ideal for heavy-duty positioning tasks. The extruded aluminum barrel features sensor grooves on both sides to house CMSE reed or DMSE solid-state switches.
This specific configuration includes a SUS304 stainless steel piston rod (option B) for superior corrosion resistance and features PT tapered port threads. The rear adjuster acts strictly as a travel stop to fine-tune the end position during commissioning without adding external stops; it does not lock the load without live air pressure. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100BX900-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100BX900-40S Is Used
Variable End-Stop Tuning
Dial in the exact retraction point within the 860-900 mm window during machine commissioning to accommodate varying product widths without installing external mechanical stops.
Heavy-Duty Forming Press
Leverage the 7068 N push force at 0.9 MPa to actuate a heavy forming tool, using the SUS304 rod to resist corrosion in humid manufacturing environments.
Long-Stroke Material Guide
Position long workpieces on a conveyor using the 900 mm travel, relying on the adjustable stopper to fine-tune the resting position for downstream processing.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40S the Right Cylinder?
Select this 100 mm bore cylinder when an application requires substantial thrust—such as 3927 N at 0.5 MPa—exceeding the 1374 N push of the smaller 50 mm bore, but without stepping up to the bulkier 125 mm size. The adjustable 860-900 mm travel is highly advantageous for machine setup and product changeovers, allowing operators to dial in the exact end position rather than swapping out a fixed-stroke SAI cylinder.
Because the 900 mm stroke is long, the 25 mm rod diameter and M20x1.5 rod thread will still experience leverage forces under side loads; an external guide bearing is strongly recommended to prevent binding. To replace an ISO 15552 cylinder, match the 100 mm bore, 900 mm stroke, 40 mm adjustment, PT G1/2 port, desired mounting, and the -S magnet. For load-holding without live air, the rear stopper is insufficient—consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL or BSAI clamp-lock 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 SAIJ100BX900-40S FAQ
The rear adjuster screw allows you to shorten the effective travel by up to 40 mm, creating a usable stroke window of 860 to 900 mm. This stopper fine-tunes the end position at commissioning but does not lock or hold the load without live air pressure.
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 801 kgf.
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