Airtac SAIJ100 Adjustable Cylinder SAIJ100AX70-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX70-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX70-20S
The AirTAC SAIJ100X70-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 70 mm travel to a precise 50-70 mm window during commissioning.
This adjustable variant uses an external stopper screw at the rear to fine-tune the retract end position without adding external stops. The adjuster acts purely as a travel stop and does not hold the load without live air pressure. It retains the standard extruded aluminum barrel with sensor grooves on both sides, and utilizes a G1/2 port paired with variable air cushions at both ends for smooth deceleration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX70-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX70-20S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX70-20S
| 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 SAIJ100AX70-20S Is Used
Product Changeover Dials
Quickly fine-tune the 50-70 mm travel window during line changeovers to accommodate slightly different product lengths without replacing the actuator.
Variable End-Stop Setup
Ideal for machine setups requiring precise retract positioning, using the rear adjuster to set the exact end-of-stroke limit during commissioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX70-20S the Right Cylinder?
Choose the SAIJ adjustable-stroke format over a fixed SAI model when you need variable end stops for product changeovers or machine setup without physically swapping the actuator.
To replace an ISO 15552 cylinder, match the 100 mm bore, 70 mm stroke, 20 mm adjustment range, PT tapered port threads, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets. For any load-holding requirements without continuous air pressure, this cylinder is insufficient; the rear stop is not a lock, so you should explore an AirTAC SAIL 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 SAIJ100AX70-20S FAQ
The rear adjuster screw allows you to shorten the effective travel from the nominal 70 mm down by up to 20 mm, creating a precise 50-70 mm usable stroke window. It acts as a mechanical stop for the retract end position and does not lock the load without live air pressure.
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