Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-75
The AirTAC SAIJ100X225-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. It features a SUS304 stainless steel rod and PT tapered ports. By turning the external rear stopper screw, you can trim the effective travel back by up to 75 mm, creating a precise 150-225 mm usable stroke window without swapping out the cylinder.
This 100 mm bore profile cylinder runs at speeds of 30-800 mm/s and includes adjustable air cushions at both ends to manage kinetic energy. The rear adjuster acts purely as a travel stop for end-position tuning and does not lock the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 225 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 SAIJ100BX225-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×225 | 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 SAIJ100BX225-75 Is Used
Product Changeover
Dial in the 150-225 mm travel window during format changes on a packaging line, allowing rapid size adjustments without replacing the actuator.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to dial out mechanical slack or hit a precise datum without external stop blocks.
High-Force Clamping
Leverage the 3927N push force at 0.5 MPa to secure heavy workpieces, using the adjuster to set the exact clamping depth for different parts.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-75 the Right Cylinder?
Select this 100 mm bore model when an application requires high thrust combined with variable end-stop positioning, such as accommodating multiple product sizes on a single machine. If the 3927N push force at 0.5 MPa is excessive, stepping down to an 80 mm bore yields 2513N. Conversely, if you need more power, a 125 mm bore provides 6136N. Because the nominal stroke is 225 mm, it falls below the 300 mm side-load threshold, but the robust 25 mm SUS304 rod still handles standard guiding duties well.
The adjustable stroke is ideal for commissioning fine-tunes and product changeovers, eliminating the need to bolt on external stops or buy a fixed-stroke SAI cylinder. To match this ISO 15552 dimensionally interchangeable cylinder, specify the 100 mm bore, 225 mm stroke, 75 mm adjustment range, PT ports, and your preferred mounting option from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Note that FB, CA, CB, and CR mounts are omitted from this series.
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 SAIJ100BX225-75 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 225 mm stroke by up to 75 mm. This provides a usable travel window of 150-225 mm, which can be fine-tuned during commissioning or product changeovers without changing the cylinder.
At 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
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