Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50 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 SAIJ100BX425-50
The AirTAC SAIJ100X425-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 50 mm. This yields a usable window of 375 to 425 mm, letting you dial in the exact end position during commissioning without physically swapping the cylinder or adding external stops. It delivers a robust 7068 N of push force at 0.9 MPa, making it well-suited for heavy positioning tasks.
This specific configuration incorporates a SUS304 stainless steel rod (material code B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on three sides for flexible switch mounting. Note that the rear adjuster acts purely as a travel stop to set deceleration and end position; it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50 |
|---|---|
| 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 SAIJ100BX425-50
| 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 SAIJ100BX425-50 Is Used
Product Changeover
Rapidly adjust the retract end-stop within the 375-425 mm window when switching between product lengths on a packaging line, avoiding mechanical rebuilds.
Heavy Pressing
Leverage the 7068 N push force at 0.9 MPa to seat heavy components, using the rear stopper to fine-tune the final pressing depth during commissioning.
Corrosive Environments
Utilize the SUS304 stainless steel rod to operate reliably in washdown or mildly corrosive industrial environments without premature seal wear.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50 the Right Cylinder?
Select this 100 mm bore cylinder when your application requires substantial thrust—stepping up to the 125 mm bore yields 8590 N push at 0.5 MPa, while dropping to the 80 mm bore provides 3518 N. An adjustable stroke is ideal for production lines running multiple product sizes, as the 50 mm trim window allows rapid changeover of the retract end-stop without machinery redesign. For load-holding without continuous air pressure, this cylinder is insufficient; you must specify a SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
Because the 425 mm stroke exceeds 300 mm, the M20x1.5 rod and piston assembly will experience amplified leverage on any misalignment. Always pair this unit with an external guide rail to prevent side-load damage to the rod seals. To match this ISO 15552 footprint exactly, specify a 100 mm bore, 425 mm nominal stroke, 50 mm adjustment, PT port thread, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet.
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 SAIJ100BX425-50 FAQ
The rear adjuster screw lets you shorten the 425 mm nominal stroke by up to 50 mm, providing an effective travel window of 375 to 425 mm. This stopper sets the end position and deceleration point but does not lock or hold the load without live air pressure.
At an operating pressure of 0.9 MPa, the SAIJ100X425-50 generates a push force of 7068 N and a pull force of 5497 N. The maximum allowable operating pressure is 1.0 MPa.
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