Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-75S 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 SAIJ100BX300-75S
The AirTAC SAIJ100X300-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel. With a 300 mm nominal stroke and a 75 mm adjustment range, it provides a usable 225-300 mm travel window for precise end-position tuning at commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy actuation tasks with ease.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a magnet (-S) for position sensing with CMSE reed or DMSE electronic switches. It uses PT tapered ports (G1/2) and retains the standard extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts strictly as a travel stop for product changeovers, not a lock, meaning live air is required to hold the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-75S |
|---|---|
| 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 SAIJ100BX300-75S
| 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 SAIJ100BX300-75S Is Used
Machine Changeover
Dial in the 225-300 mm travel window during product size transitions on a packaging line without replacing the actuator.
Variable End Stops
Fine-tune the retract position during machine commissioning to perfect pressing or clamping depth on the fly.
Heavy Load Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy jigs while using the rear screw to set precise travel limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-75S the Right Cylinder?
Select this 100 mm bore cylinder when an application requires substantial thrust (3927 N push at 0.5 MPa) and on-the-fly end-position adjustments without swapping out the cylinder or adding external stops. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. Because the nominal stroke is 300 mm, an external guide is recommended to prevent rod side-loading on long unsupported travels.
To match this ISO 15552 interchangeable cylinder, specify a 100 mm bore, 300 mm stroke, 75 mm adjustment range, PT port thread, and the -S magnet option. Remember that the rear adjuster and air cushions only decelerate the load; for true position holding without live air pressure, consider an AirTAC SAIL or BSAI series cylinder instead.
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 SAIJ100BX300-75S 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 the maximum pressure of 1.0 MPa, it delivers up to 801 kgf.
The rear adjuster screw allows you to shorten the 300 mm nominal stroke by up to 75 mm, creating a usable travel window of 225-300 mm. The adjuster acts as a mechanical stop to fine-tune the end position and does not lock the load without live air.
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