Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20
The AirTAC SAIJ100X375-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 3927N of push force at 0.5 MPa. It features a carbon steel piston rod and PT tapered port threads. By turning the rear stopper screw, you achieve a usable travel window of 355 to 375 mm, allowing precise end-position tuning without adding external stops.
This adjustable-stroke design is ideal for product changeovers, letting you dial in the exact retract distance on the fly. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, though a magnet is not included on this base model. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 375 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 SAIJ100X375-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×375 | 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 SAIJ100X375-20 Is Used
Machine Changeover
Fine-tune the retract distance by up to 20mm during product size transitions on a packaging line without swapping out the entire cylinder assembly.
End-Stop Calibration
Dial in the exact 355-375mm travel window during commissioning to perfect the seating force of pressing operations without external stopper blocks.
Assembly Positioning
Move heavy components along a conveyor using the 3927N push force, relying on the rear stopper to set precise resting positions for robotic handoffs.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20 the Right Cylinder?
Choose this 100mm bore when a 50mm bore (982N push at 0.5 MPa) is insufficient for your load, but a 125mm bore (6136N) is oversized. The 20mm adjustment window is selected when you need variable end-stops for machine setup or product-size changes, rather than relying on a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, this cylinder is insufficient; you would need an external rod lock, or a related type like the SAIL or BSAI.
Because the 375mm stroke is relatively long, the 25mm rod diameter helps manage side loads, but an external guide is still recommended to prevent rod bending. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR mounts.
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 SAIJ100X375-20 FAQ
At a standard 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It can reach up to 7068N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 375mm nominal stroke down to as little as 355mm. It sets the retract end position but does not lock or hold the load without live air pressure.
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