Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75 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 SAIJ100X325-75
The AirTAC SAIJ100X325-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. It features a 325 mm nominal stroke that can be dialed back by up to 75 mm, creating a precise 250-325 mm usable travel window for exact end-position tuning. This bore uses a G1/2 port and a 25 mm carbon steel rod.
Because the adjuster acts purely as a mechanical stop, it sets the retract position without holding the load pneumatically; for dead-air load holding you would need a SAIL or BSAI variant. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is specified later. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75 |
|---|---|
| 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 SAIJ100X325-75
| 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 SAIJ100X325-75 Is Used
Product Changeovers
Dial in the 250-325 mm travel window during format size changes on a packaging line without physically swapping out the actuator.
Machine Setup
Fine-tune the retract end position at commissioning to perfect a pressing or lifting motion, avoiding the need for external stopper blocks.
Variable End Stops
Adjust the effective stroke on the fly for automated assembly equipment that handles parts of slightly varying lengths.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75 the Right Cylinder?
Choose this 100 mm bore when a 50 mm bore (982N push at 0.5 MPa) is insufficient but an 80 mm bore (2513N) leaves no margin, yielding 5497N at 0.7 MPa here. The 75 mm adjustment range is ideal for product changeovers on a line, letting you shift the end stop without swapping the cylinder or adding external stops. For any fixed-position requirement, a standard SAI cylinder is simpler.
When replacing an ISO 15552 cylinder, match the 325 mm stroke, 75 mm adjuster, G1/2 PT port, and mounting style. Since the stroke is 325 mm, the 25 mm rod needs external guiding to prevent excessive side loading on the seals. Note that the rear screw adjusts travel but does not lock the load without live air pressure.
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 SAIJ100X325-75 FAQ
At 0.5 MPa it provides 3927N push and 3681N pull force. At 0.7 MPa the push force increases to 5497N, and it reaches a maximum of 801 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the 325 mm nominal stroke by up to 75 mm, providing a usable travel window of 250-325 mm. It acts as a mechanical stop and does not lock the load without live air.
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