Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-75S 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 SAIJ100BX325-75S
The AirTAC SAIJ100X325-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 250 to 325 mm. Delivering 3927 N of push force at 0.5 MPa, it handles heavy-duty positioning with precision. The SUS304 stainless steel rod offers high corrosion resistance, while the integrated magnet supports CMSE reed and DMSE electronic sensors for exact end-position detection.
Because this model features a 325 mm stroke, the robust 25 mm rod diameter helps manage inherent side loads, though an external guide remains essential for unsupported lengths. The rear stopper allows you to fine-tune the retract position during commissioning without swapping hardware. Remember that this adjuster acts solely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-75S |
|---|---|
| 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 SAIJ100BX325-75S
| 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 SAIJ100BX325-75S Is Used
Variable End-Stop Machining
Dial in the retract position by up to 75 mm on machining fixtures to accommodate different raw material lengths without changing out the entire cylinder assembly.
Product Changeover Diverters
Quickly adjust the stroke window from 325 mm down to 250 mm on packaging lines to handle varying box sizes during rapid product changeovers.
Heavy Press Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy pallets, using the rear stopper to precisely set the extension limit for multi-stage pressing operations.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-75S the Right Cylinder?
Choose this 100 mm bore when the 80 mm class (2513 N push at 0.5 MPa) lacks the necessary thrust, but the 125 mm bore (6136 N) would be excessive. The 75 mm adjustment window is ideal for machinery requiring frequent product changeovers, allowing operators to dial in the exact end-stop mechanically rather than reprogramming fixed SAI cylinders. For load-holding without continuous air pressure, integrate an external pilot-operated check valve or select a SAIL or BSAI cylinder.
To match this ISO 15552 interchangeable cylinder exactly, specify a 325 mm nominal stroke, up to 75 mm adjustment, PT tapered ports (G1/2), and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
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 SAIJ100BX325-75S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear mechanical stopper allows you to trim the effective travel back by up to 75 mm, creating a usable stroke window of 250 to 325 mm. This stopper only sets the end position and does not act as a lock to hold the load without air pressure.
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