Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-20 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 SAIJ100BX225-20
The AirTAC SAIJ100X225-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 205 and 225 mm. Built with a SUS304 stainless steel rod and PT tapered port threads, it delivers robust thrust up to 7068 N at 0.9 MPa. This adjustable end-position capability is ideal for applications requiring precise setup without adding external stops.
Unlike a fixed-stroke SAI unit, this model lets you dial in the retract end position during commissioning or product changeovers. The rear screw acts purely as a travel stop and works alongside the adjustable air cushions, but it does not lock the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-20 |
|---|---|
| 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 SAIJ100BX225-20
| 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 SAIJ100BX225-20 Is Used
Machine Changeover
Dial in the 205 to 225 mm travel window during product size transitions to set exact end positions without physically swapping the cylinder.
End-Position Tuning
Use the 20 mm rear adjuster to fine-tune the retract stop during commissioning, eliminating the need to bolt on custom external stoppers.
High-Force Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy assemblies into a precisely adjusted final position on automated lines.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-20 the Right Cylinder?
Choose this 100 mm bore when your application requires higher force than an 80 mm cylinder, which provides 4523 N of push force at 0.9 MPa. The 20 mm adjustment range is perfect for machinery that handles multiple product sizes, allowing operators to reposition the end stop quickly rather than swapping cylinders. It utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 225 mm stroke, PT port, and 20 mm adjustment. Because the stroke exceeds 300 mm threshold checks do not apply here, but the 25 mm rod diameter handles moderate side loads well; for long unsupported loads, always use an external guide. This unit does not include a magnet, so position sensing requires external switches.
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 SAIJ100BX225-20 FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder generates a push force of 7068 N and a pull force of 3681 N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel down from the 225 mm nominal stroke to a minimum of 205 mm, providing a 20 mm tuning window.
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