Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-20S 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 SAIJ100BX325-20S
The AirTAC SAIJ100X325-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers robust thrust, providing 5497N of push force at 0.7 MPa and 7068N at 0.9 MPa. The integrated -S magnet enables position sensing with AirTAC CMSE reed and DMSE electronic switches.
This model features a 325 mm nominal stroke that can be fine-tuned down by up to 20 mm, creating a precise 305-325 mm usable travel window. The SUS304 stainless steel rod offers high corrosion resistance, and the extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-20S |
|---|---|
| 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 SAIJ100BX325-20S
| 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 SAIJ100BX325-20S Is Used
Machine Changeover
Quickly reconfigure the 305-325 mm travel window for different product sizes on a packaging line without replacing the cylinder.
Commissioning Calibration
Fine-tune the retract end-position during setup to achieve exact material placement, avoiding the need for external mechanical stops.
High-Force Positioning
Leverage the 7068N push force at 0.9 MPa to move heavy jigs or pallets into precise final locations on an assembly conveyor.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-20S the Right Cylinder?
Choose this 100 mm bore when 50 mm cylinders (1374N push at 0.5 MPa) lack the necessary force, but an 80 mm bore (3518N at 0.7 MPa) is insufficient. The adjustable stroke is ideal for dialing in exact end positions during machine commissioning or product changeovers without swapping hardware. Because the 325 mm stroke is relatively long, ensure external guide rails support the load to prevent excessive side-loading on the SUS304 rod.
For a direct ISO 15552 replacement match, verify a 100 mm bore, 325 mm stroke, 20 mm adjustment, PT tapered port threads, and the -S magnet option. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for fail-safe locking, consider the SAIL or BSAI series instead. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 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 SAIJ100BX325-20S FAQ
At 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective travel from the 325 mm nominal stroke down to 305 mm. It sets the end position but does not lock the load without continuous air pressure.
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