Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 230mm 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
- Stroke230 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-10
The AirTAC SAIJ40X230-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel down from 230 mm to a minimum of 220 mm. This 10 mm adjustment window is ideal for dialing in end positions during commissioning without adding external stops. The 40 mm bore delivers 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa, making it well-suited for moderate-duty positioning tasks.
This SKU features a SUS304 stainless steel rod for corrosion resistance and uses PT tapered port threads. It retains the standard extruded aluminum barrel with sensor grooves on both sides, though no magnet is specified for this configuration. The rear adjuster acts strictly as a mechanical stop to set the travel end and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 230 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 SAIJ40BX230-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×230 | 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 SAIJ40BX230-10 Is Used
Machine Changeovers
Dial in the 220-230 mm travel window during product size changeovers without physically swapping the cylinder or bolting on external stoppers.
End-Position Tuning
Fine-tune the retract end position during commissioning to achieve exact placement, compensating for mechanical tolerances in the fixture.
Moderate-Duty Positioning
Leverage the 879 N push force at 0.7 MPa to push or lift moderate loads into exact final coordinates on an automated line.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-10 the Right Cylinder?
Choose this 40 mm bore if your application requires around 628 N of thrust at 0.5 MPa, stepping up from the 32 mm bore (402 N) or down from the 50 mm bore (982 N). An adjustable-stroke cylinder is selected over a fixed SAI model when you need variable end-stops to accommodate quick product changeovers on a shared machine frame.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 230 mm stroke, 10 mm adjustment range, PT port thread, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Since the 230 mm stroke is under the 300 mm threshold, side-load concerns are minimal, but an external guide is still recommended for heavy offset loads.
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 SAIJ40BX230-10 FAQ
At a 0.5 MPa operating pressure, the 40 mm bore provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to shorten the nominal 230 mm stroke by up to 10 mm, creating a usable travel window of 220-230 mm. It functions as a mechanical stop and requires live air pressure to hold the load.
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