Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50 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 SAIJ100BX225-50
The AirTAC SAIJ100X225-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 225 mm travel that can be dialed back by up to 50 mm, yielding a usable 175-225 mm end-position window for precise machine setup. Delivering 3927 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads.
Because the adjuster acts purely as a mechanical stop on the retract end, it cannot hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed and DMSE electronic switches. This adjustable design eliminates the need to swap cylinders or bolt on external stops during product changeovers.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50 |
|---|---|
| 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 SAIJ100BX225-50
| 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 SAIJ100BX225-50 Is Used
Machine Changeover
Dial in the 175-225 mm stroke window on the fly when switching a packaging line between different product sizes without swapping out the entire actuator.
Variable End-Stop Tuning
Use the 50 mm rear adjusting screw to fine-tune the retract position during initial commissioning, ensuring precise alignment without adding external mechanical stops.
Heavy Fixture Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy industrial jigs into place, relying on the SUS304 rod for durability in harsh manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50 the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder (providing 2513 N push force at 0.5 MPa) is insufficient for moving heavy fixtures. The 50 mm adjustment range is ideal for applications requiring variable end stops during commissioning or product-size changes, offering flexibility that a fixed-stroke SAI cylinder cannot match. To replace an ISO 15552 cylinder, match the 100 mm bore, 225 mm stroke, 50 mm adjustment, PT ports, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since the total stroke exceeds 300 mm is not a factor here at 225 mm, standard mounting suffices, but always ensure the load is guided to prevent excessive side-load on the 25 mm rod.
If absolute load-holding is required without continuous air pressure, note that the rear adjuster and air cushions only decelerate travel. You would need to step up to a SAIL (air-released lock) or BSAI (clamp-lock) cylinder, or utilize an external pilot-operated check valve.
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 SAIJ100BX225-50 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf of push force.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 225 mm down to as little as 175 mm. It sets the travel end and works with the air cushion to decelerate the load, but it does not lock or hold the load without live air pressure.
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