Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40S
The AirTAC SAIJ100X300-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N push force at 0.5MPa, making it suitable for heavy-duty positioning. The integrated -40mm adjustment screw allows you to trim the effective travel back from the nominal 300mm, creating a 260-300mm usable window to dial in exact end positions during commissioning.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads with a G1/2 connection. Because it carries the -S magnet, it directly supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed in the dual-side barrel grooves. The rear screw acts purely as a travel stop for deceleration and positioning, so it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAIJ100BX300-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100BX300-40S Is Used
Product Size Changeovers
Quickly fine-tune the 260-300mm stroke end-position when adapting a packaging line to different carton lengths without changing the cylinder.
Heavy-Duty Positioning
Leverage the 3927N push force at 0.5MPa to move heavy fixtures, using the rear stopper to set precise deceleration limits during machine setup.
Corrosive Assembly Lines
Utilize the SUS304 stainless steel rod in washdown or humid assembly areas, tracking position with DMSE electronic sensors in the dual grooves.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40S the Right Cylinder?
Select this 100mm bore when an 80mm cylinder lacks thrust, as the 80mm yields 2513N compared to this model's 3927N at 0.5MPa. An adjustable stroke is ideal for machines requiring frequent product-size changeovers, letting you shift the end-stop without adding external stops or swapping the cylinder. For any load-holding requirements without continuous air pressure, you must integrate an external pilot-operated check valve or choose a SAIL or BSAI lock variant, as the SAIJ adjuster is not a brake.
To replace an ISO 15552 cylinder, match the 100mm bore, 300mm stroke, 40mm adjustment, PT G1/2 port, and the -S magnet. Since the 300mm stroke is relatively long, the 25mm rod diameter handles side loads well, but you should still use an external guide rail to prevent rod binding. This SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options.
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 SAIJ100BX300-40S FAQ
At 0.5MPa it provides 3927N of push force and 3681N of pull force. At 0.7MPa the push force increases to 5497N, with a maximum rated push force of 7068N at 0.9MPa.
The rear adjuster screw lets you shorten the 300mm nominal stroke by up to 40mm, providing a usable travel window of 260-300mm. It functions as a mechanical stop to tune the end position and does not lock the load without live air.
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