Airtac SAIJ40 Adjustable Cylinder SAIJ40BX950-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX950-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 950mm 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
- Stroke950 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX950-10
The AirTAC SAIJ40X950-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 940-950mm usable travel window. It delivers 879N of push force at 0.7MPa, utilizing a PT G1/4 port and a 16mm carbon steel rod. This adjustable-stroke design allows you to fine-tune the end position at commissioning without swapping the cylinder or adding external stops.
This SUS304 stainless steel rod variant (code B) provides enhanced corrosion resistance for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster acts purely as a travel stop, not a load lock. For position holding without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX950-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX950-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 950 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 SAIJ40BX950-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×950 | 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 SAIJ40BX950-10 Is Used
Machine Changeover
Dial in the 940-950mm travel window during product size changes without physically replacing the cylinder or adding external mechanical stops.
Extended Line Positioning
Fine-tune the extended end stop on long-stroke conveyor routing arms to compensate for minor mechanical drift over time.
Assembly Calibration
Adjust the rear stopper during commissioning to perfectly set the 950mm end position for precise part pressing operations.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX950-10 the Right Cylinder?
Choose this 40mm bore when you need precise end-position tuning within a 940-950mm travel window, stepping down from a 63mm bore (which provides 2182N at 0.7MPa) to reduce size and weight. The adjustable stroke is ideal for machine setup and product changeovers, whereas a fixed SAI cylinder locks you into a single exact dimension. Since the 950mm stroke is long, an external guide is recommended to prevent excessive side-loading on the 16mm rod.
This model uses a PT tapered G1/4 port and omits the FB, CA, CB, and CR mounting styles, utilizing only the Basic, FA, LB, TC, FTC, TCM1, and TCM2 ISO 15552 interfaces. Without a magnet, it does not support CMSE or DMSE sensors. It is dimensionally interchangeable with ISO 15552 cylinders without claiming direct brand equivalence.
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 SAIJ40BX950-10 FAQ
At an operating pressure of 0.7 MPa, this 40mm bore cylinder provides 879N of push force and 528N of pull force. It can reach a maximum push force of 1130N at 0.9 MPa.
The rear adjuster screw allows you to shorten the 950mm nominal stroke by up to 10mm, creating a 940-950mm usable travel window. This stopper only sets the end position; it does not lock the load without continuous air pressure.
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