Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20S 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 SAIJ100X375-20S
The AirTAC SAIJ100X375-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N push force at 0.5MPa, making it suitable for heavy-duty positioning tasks. The integrated magnet allows seamless use with CMSE reed and DMSE electronic sensors for precise mid-stroke detection.
This specific SKU provides a 355-375mm usable travel window, allowing you to dial back the nominal 375mm stroke by up to 20mm. The extruded aluminum barrel includes sensor grooves on both sides, and the carbon steel rod features an M20x1.5 thread for high side-load resilience.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20S |
|---|---|
| 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 SAIJ100X375-20S
| 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 SAIJ100X375-20S Is Used
Machine Changeover
Quickly fine-tune the retract end-stop by up to 20mm to accommodate new product lengths on a packaging line without changing the cylinder.
Commissioning Calibration
Dial in the exact 355-375mm travel window during initial setup to perfectly time heavy-duty press operations and avoid mechanical hard stops.
Variable End-Stop Positioning
Adjust the stroke endpoint on the fly for sorting diverter arms that handle varying package sizes on a high-throughput conveyor system.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-20S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your application requires fine end-position tuning during commissioning or product changeover without swapping cylinders or adding external stops. If your force requirements are lower, stepping down to an 80mm bore yields 2513N at 0.5MPa; if higher, the 125mm bore provides 6136N. Because the 375mm stroke is relatively long, an external guide is recommended to support the load and prevent rod bending.
For a drop-in ISO 15552 replacement, match the 100mm bore, 375mm stroke, 20mm adjustment range, PT tapered port threads, and the -S magnet option. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider the SAIL or BSAI series. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100X375-20S FAQ
At 0.5MPa 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 0.9MPa.
The rear adjuster screw lets you shorten the effective travel from the nominal 375mm down to 355mm, giving a 355-375mm usable window. It acts as a physical stop to fine-tune the end position without adding external stops.
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