Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-100
The AirTAC SAIJ100X325-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the 325 mm nominal stroke by up to 100 mm. This yields a usable travel window of 225-325 mm, enabling exact end-position tuning at commissioning without swapping the barrel or adding external stops. It delivers 3927 N of push force at 0.5 MPa and utilizes a 25 mm carbon steel rod with an M20x1.5 thread.
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. For load-holding applications without continuous air, consider the SAIL or BSAI series. This extruded aluminum profile cylinder includes dual sensor grooves and uses PT tapered port threads (G1/2).
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 325 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 SAIJ100X325-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×325 | 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 SAIJ100X325-100 Is Used
Product Changeover Lines
Dial in the exact 225 to 325 mm travel window during format size changes without physically replacing the cylinder or repositioning hard stops.
Machine Setup Tuning
Fine-tune the retract end-position precisely during commissioning to perfect timing and mechanical alignment in automated assembly machinery.
Variable End-Stop Actuation
Provide adaptable stroke lengths for multi-model production lines where the rear mechanical stop must be adjusted to accommodate different part depths.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-100 the Right Cylinder?
Selecting this 100 mm bore over a smaller 80 mm unit significantly increases thrust from 2513 N to 3927 N at 0.5 MPa, while stepping up to a 125 mm bore would push that to 6136 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product-size changeovers, offering more flexibility than a fixed-stroke SAI cylinder. When ordering an ISO 15552 replacement, confirm the 325 mm stroke, 100 mm adjustment range, PT G1/2 port, and mounting style.
Because the 325 mm stroke is relatively long, the 25 mm rod and M20x1.5 thread provide robust support, but an external guide is still recommended to prevent excessive side-loading on the piston. Available mounting options include 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 SAIJ100X325-100 FAQ
It provides 3927 N of push force and 3681 N of pull force at 0.5 MPa. At the maximum operating pressure of 1.0 MPa, the push force reaches 801 kgf.
The rear adjuster screw allows you to shorten the 325 mm nominal stroke by up to 100 mm, creating a usable travel window of 225 to 325 mm. The adjuster functions as a travel stop and does not lock or hold the load without continuous air pressure.
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