Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 425mm 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
- Stroke425 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30S
The AirTAC SAIJ100X425-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a robust 3927N push force at 0.5 MPa and features a 425mm nominal stroke that can be fine-tuned down by up to 30mm, yielding a usable travel window of 395-425mm. This built-in adjustability allows you to dial in the exact retract end-position during commissioning without adding external stops.
This specific SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel retains standard sensor grooves on both sides. Because the 425mm stroke is relatively long, the 25mm rod diameter and M20x1.5 rod thread provide necessary rigidity, though an external guide is still recommended for heavy unsupported loads.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 425 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 SAIJ100BX425-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×425 | 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 SAIJ100BX425-30S Is Used
Product Changeover
Fine-tune the 395-425mm retract distance during format changes without physically replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Dial in the exact end-of-stroke position during machine commissioning to absorb minor mechanical variances across a 425mm travel path.
Corrosive Forming
Leverage the SUS304 stainless steel rod in humid or washdown manufacturing environments while delivering 3927N of pushing force.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30S the Right Cylinder?
Choose this 100mm bore when you need higher thrust than a 80mm bore (which provides 2513N push at 0.5 MPa) but want to avoid the bulk of a 125mm option. The adjustable stroke is ideal for product-size changeovers on a line, letting you shift the end-stop by up to 30mm on the fly instead of physically swapping the cylinder for a fixed-stroke SAI unit. When replacing an ISO 15552 cylinder, match the 100mm bore, 425mm stroke, PT tapered port threads, and the -S magnet requirement.
For any stroke of 425mm, side-load management is critical; ensure your mounting configuration—whether Basic, FA, LB, TC, FTC, TCM1, or TCM2 (the SAIJ set omits FB, CA, CB, and CR)—properly supports the load. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ cannot hold a load without live air, so consider an AirTAC SAIL or BSAI cylinder if true mechanical locking is required.
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 SAIJ100BX425-30S FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster acts as an external stopper that allows you to shorten the effective stroke by up to 30mm from the 425mm nominal length, creating a 395-425mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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