Airtac SAIJ40 Adjustable Cylinder SAIJ40BX40-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX40-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX40-10
The AirTAC SAIJ40X40-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 40 mm stroke that can be fine-tuned down by up to 10 mm, creating a precise 30-40 mm usable travel window. Delivering 628 N of push force at 0.5 MPa, it fits perfectly into light-duty positioning setups.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Unlike fixed-stroke SAI units, this adjustable model allows you to dial in the retract end-position during commissioning without adding external stops.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX40-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX40-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAIJ40BX40-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SAIJ40BX40-10 Is Used
Precision End-Stop Tuning
Dial in the exact 30-40 mm retract position during machine commissioning to achieve perfect part alignment without swapping cylinders.
Product Size Changeovers
Quickly adjust the stroke end-point by up to 10 mm when running a new product batch, minimizing production line downtime.
Light-Duty Positioning
Leverage the 628 N push force and SUS304 stainless steel rod for reliable, corrosion-resistant actuation in precision assembly tools.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX40-10 the Right Cylinder?
Choose this 40 mm bore when an application requires more power than a 32 mm cylinder (which provides 402 N push at 0.5 MPa) but lacks the space for a 50 mm unit (982 N). The 10 mm adjustment window is ideal for machines that need precise end-stop tuning during product changeovers. Since the rear adjuster acts only as a travel stop and the air cushions handle deceleration, neither will hold a load without live air; for true load-holding, consider an external rod lock or the SAIL series.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 40 mm bore, 40 mm stroke, PT G1/4 port, and the specific 10 mm adjustment code. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ40BX40-10 FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder produces 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel. For this model, it allows you to trim the 40 mm nominal stroke down to as little as 30 mm, providing a 30-40 mm usable window for fine-tuning.
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