Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40
The AirTAC SAIJ100X75-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 3927N push force at 0.5 MPa. Its integrated PT-tapered G1/2 port and carbon steel rod handle demanding cycles, while the extruded aluminum barrel maintains standard dimensional interchangeability. This 100mm bore actuator operates efficiently at speeds between 30 and 800 mm/s.
Featuring a 75mm nominal stroke, the external rear stopper lets you dial back the travel by up to 40mm, creating a precise 35-75mm usable window. This built-in adjustability allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. The adjuster functions strictly as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100X75-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100X75-40 Is Used
Machine Changeover
Quickly adjust the 35-75mm travel window during product size changes without disassembling the actuator or shimming external stops.
End-Position Tuning
Dial in the exact retract distance during commissioning to perfect a pressing or forming operation using the rear stopper screw.
Variable End Stops
Accommodate multiple part lengths on a single conveyor line by tweaking the stroke length on the fly to meet changing production demands.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40 the Right Cylinder?
Select this 100mm bore actuator when your application requires substantial thrust—such as the 3927N push force at 0.5 MPa—but demands final position tuning during machine setup. If your process needs less force, stepping down to an 80mm bore yields 2513N of push force, whereas upgrading to a 125mm bore provides 6136N. The adjustable 35-75mm travel window is perfect for product changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot match.
For a direct ISO 15552 replacement, match the 100mm bore, 75mm stroke, 40mm adjustment, G1/2 port, and your required mounting style. SAIJ supports a specific subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that neither the rear adjuster nor the standard air cushions act as a lock; for load-holding without live air, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ100X75-40 FAQ
At 0.5 MPa operating pressure, this 100mm 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 75mm nominal stroke by up to 40mm, providing an effective travel range of 35 to 75mm. It acts as a mechanical stop and does not lock the load without continuous air pressure.
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