Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-50S 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 SAIJ100BX325-50S
The AirTAC SAIJ100X325-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 275 to 325 mm. Built with a SUS304 stainless steel rod, it delivers 3927 N of push force at 0.5 MPa, scaling up to 7068 N at 0.9 MPa. The integrated magnet enables position feedback via CMSE reed or DMSE electronic sensors.
Because the 325 mm stroke exceeds typical standard boundaries, an external guide is recommended to manage side loads on the long unsupported rod. The rear adjustment screw acts purely as a travel stop for end-position tuning, not a load-holding lock; maintaining position without live air requires a SAIL or BSAI variant.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-50S |
|---|---|
| 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 SAIJ100BX325-50S
| 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 SAIJ100BX325-50S Is Used
Product Changeovers
Dial in the exact 275 to 325 mm end-stop during format size changes without physically replacing the actuator or bolting on external stops.
Fixture Positioning
Fine-tune the retract position of large machining fixtures at commissioning, leveraging 7068 N of thrust at 0.9 MPa to secure heavy workpieces.
Diversion Arms
Adjust the stroke of conveyor sorting arms on the fly to accommodate varying package widths, using the SUS304 rod for durability in dynamic applications.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-50S the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks the thrust for moving heavier fixtures, but a 125 mm bore is physically oversized. The 50 mm adjustment range is ideal for product-size changeovers on a packaging line, allowing operators to dial in the exact end-stop without swapping the cylinder or adding external stops. To match this ISO 15552 footprint, specify a 325 mm stroke, PT tapered ports, and the desired mounting from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or 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 SAIJ100BX325-50S FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. When operating at 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the nominal 325 mm stroke by up to 50 mm, creating a usable travel window of 275 to 325 mm. It functions as a travel stop and does not hold the load without continuous air pressure.
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