Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40S
The AirTAC SAIJ100X70-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 70 mm stroke that can be fine-tuned down by up to 40 mm, creating a precise 30-70 mm usable travel window for exact end-position calibration. Delivering 3927 N of push force at 0.5 MPa, it handles heavy positioning tasks reliably.
This variant includes a carbon steel piston rod and a -S magnet for seamless integration with AirTAC CMSE reed and DMSE electronic sensors via the dual-side barrel grooves. The rear adjuster acts purely as a mechanical stop to set the travel end and relies on the integrated air cushions for deceleration; it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 70 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 SAIJ100X70-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SAIJ100X70-40S Is Used
Machine Changeover
Dial in the 30-70 mm travel window during product size changes to set exact clamping positions without replacing the actuator.
End-Position Tuning
Fine-tune the retracted end-stop during commissioning to compensate for mechanical tolerance stack-up in the fixture.
Heavy-Duty Positioning
Leverage the 3927 N push force at 0.5 MPa to move and locate heavy pallets or assemblies precisely along the adjustable travel path.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40S the Right Cylinder?
Choose this 100 mm bore cylinder when you need substantial thrust—stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa. The adjustable stroke is ideal for machine setup and product changeovers, allowing you to dial in the exact end-stop without swapping cylinders or adding external shims. For an ISO 15552 replacement match, specify the 100 mm bore, 70 mm stroke, 40 mm adjustment, PT tapered ports, and the -S magnet.
Because the stroke is 70 mm, side-load risks are minimal, but always ensure the M20x1.5 rod thread is aligned with your load coupling. If your application requires true load-holding without continuous air pressure, the rear stopper here is insufficient; consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock 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 SAIJ100X70-40S 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 the maximum 1.0 MPa pressure, it delivers up to 801 kgf of push force.
The rear adjusting screw allows you to mechanically shorten the 70 mm nominal stroke by up to 40 mm, providing a usable travel window of 30 to 70 mm. The adjuster acts as a travel stop and does not lock the load without live air pressure.
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