Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-40S 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 SAIJ100BX325-40S
The AirTAC SAIJ100X325-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 285-325 mm usable travel window, allowing you to dial back the 325 mm nominal stroke by up to 40 mm during commissioning. In the 100 mm bore class, it generates 3927 N of push force and 3681 N of pull force at 0.5 MPa. This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a magnet for position sensing.
The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position without adding external stops. It is not a locking device, so live air is required to hold the load. For applications needing true load-holding without pressure, consider the SAIL or BSAI series. This model uses a PT tapered G1/2 port and operates at speeds of 30-800 mm/s.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-40S |
|---|---|
| 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 SAIJ100BX325-40S
| 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 SAIJ100BX325-40S Is Used
Product Changeover Dials
Quickly adjust the retract end-stop by up to 40 mm to accommodate varying product lengths on a packaging line without changing the cylinder.
Machine Commissioning
Fine-tune the 285-325 mm travel window during initial setup to perfectly time the end-of-stroke position without adding bulky external physical stops.
Corrosive Assembly Lines
Leverage the 3927 N push force and SUS304 stainless steel rod for robust actuation in washdown or mildly corrosive industrial manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-40S the Right Cylinder?
Choose this 100 mm bore adjustable-stroke cylinder when your application requires precise end-position tuning during machine setup or product changeover, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If you need less force, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. If your machine requires heavier thrust, a 125 mm bore provides 6136 N.
Because the 325 mm stroke exceeds 300 mm, an external guide is recommended to prevent excessive side-loading on the rod. This SAIJ model is dimensionally interchangeable per ISO 15552. To match this exact configuration, specify the 100 mm bore, 325 mm stroke, 40 mm adjustment, PT G1/2 port, SUS304 rod, and the -S magnet for CMSE and DMSE sensors. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mountings, omitting FB, CA, CB, and CR options.
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 SAIJ100BX325-40S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. It can reach up to 7068 N of push force at 0.9 MPa.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the 325 mm nominal stroke by up to 40 mm, creating a 285-325 mm usable travel window. It only sets the end position and does not lock or hold the load without live air pressure.
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