Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40S
The AirTAC SAIJ100X350-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from the 350 mm nominal stroke, providing a usable window of 310-350 mm. Delivering 3927 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE and DMSE sensors.
Because the adjuster acts purely as a mechanical stop at the retract end, it cannot hold a load without live air pressure. For load-holding requirements, consider the SAIL or BSAI variants. The extruded aluminum barrel integrates sensor grooves on both sides, and the mounting hardware utilizes the reduced SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 350 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 SAIJ100BX350-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SAIJ100BX350-40S Is Used
Product Size Changeovers
Dial in the 310-350 mm retract end-stop on the fly when adapting a packaging line to a new carton size, avoiding mechanical rebuilds.
Machine Setup Calibration
Fine-tune the final end position during commissioning to perfectly seat heavy 100 mm bore components without mechanical shims.
Variable End-Stop Forming
Adjust the stroke window dynamically for pressing or forming applications that require precise depth control across different material batches.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40S the Right Cylinder?
Choose this 100 mm bore when a 50 mm bore (982 N push at 0.5 MPa) lacks the thrust for your setup, but an 80 mm bore (2513 N) is slightly undersized. The 40 mm adjustment range is ideal for product changeovers, letting you shift the end position without swapping the cylinder or adding external stops. If your machine requires the load to stay put during a pressure loss, you must add an external rod lock or pilot-operated check valve, as the SAIJ adjuster is not a brake.
To replace an ISO 15552 cylinder, match the 100 mm bore, 350 mm stroke, PT tapered port threads, and the -S magnet requirement. Given the 350 mm stroke, the 25 mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is still recommended to prevent excessive side-loading on the unsupported piston rod.
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 SAIJ100BX350-40S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw lets you mechanically shorten the 350 mm nominal stroke by up to 40 mm, giving a usable travel window of 310-350 mm. It functions as a hard stop for end-position tuning and does not lock the load without air pressure.
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