Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 225mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke225 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S
The AirTAC SAIJ40X225-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 215 to 225 mm. Delivering 628 N of push force and 528 N of pull force at 0.5 MPa, it is built with a SUS304 stainless steel rod and features PT tapered ports for pneumatic connections.
This configuration includes a magnet for position sensing, supporting AirTAC CMSE reed and DMSE electronic switches housed within the dual-side sensor grooves. The rear stopper screw acts solely as a travel end-tuning device for commissioning, not a load lock, and the extruded aluminum barrel design omits tie-rod construction.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX225-10S Is Used
Product Changeover
Dial in the retract position by up to 10 mm during line changeovers to accommodate slightly different product lengths without changing the cylinder.
Commissioning Calibration
Fine-tune the end-of-stroke position during initial machine setup to perfectly align tooling, avoiding the need for external mechanical shims.
Assembly Positioning
Use the 215-225 mm adjustable travel window to precisely set the resting height of an assembly fixture before applying the 628 N push force.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX225-10S the Right Cylinder?
Choose this 40 mm bore when an application requires slightly less force than the 50 mm bore (which provides 982 N push at 0.5 MPa) but more than the 32 mm option. The 10 mm adjustment range is ideal for fine-tuning the retract end position during machine setup or product changeover without adding external stops or swapping out a fixed-stroke SAI cylinder.
For drop-in interchangeability, match the 40 mm bore, 225 mm stroke, 10 mm adjustment, PT port threads, and the -S magnet requirement. Because the nominal stroke is 225 mm, external guidance is recommended to prevent rod side-loading. Note that the rear adjuster cannot hold a load without live air pressure; for true load-holding, consider an AirTAC SAIL or BSAI series cylinder.
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 SAIJ40 Adjustable Cylinder SAIJ40BX225-10S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It operates at a speed range of 30-800 mm/s and features a G1/4 port.
The rear adjuster screw allows you to shorten the effective travel from the nominal 225 mm down to 215 mm, creating a 10 mm tuning window. This stopper only sets the end position and does not lock the load without air pressure.
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