Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10
The AirTAC SAIJ40X15-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position without swapping out the unit. With a nominal 15 mm stroke and a 10 mm adjustment range, it provides a usable travel window of 5 to 15 mm for exact positioning. It delivers 628N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
This model is equipped with PT tapered port threads and lacks a standard piston magnet, meaning it does not utilize CMSE or DMSE sensors. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting, and the cylinder supports a speed range of 30-800 mm/s. It uses the standard SAIJ mounting set, including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 SAIJ40BX15-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 SAIJ40BX15-10 Is Used
Micro-Clamping
Dial in the exact clamping position on small machined parts by adjusting the rear stopper from 5 to 15 mm, ensuring no crush damage during setup.
Machine Changeover
Quickly adapt a packaging line to different product sizes by turning the rear adjuster screw rather than physically swapping out the entire cylinder.
Sensor Probe Positioning
Set the precise extension distance for a testing probe, using the fine-tune adjustment to establish a repeatable 10 mm end-point.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10 the Right Cylinder?
Choose this 40 mm bore when you need more force than the 32 mm version provides (402N push at 0.5 MPa) but want a more compact footprint than the 50 mm bore (982N push at 0.5 MPa). The adjustable stroke is perfect for applications requiring variable end-stops or machine changeovers, allowing precise tuning at commissioning without the need for fixed external stops. For applications requiring the cylinder to hold a load without live air pressure, note that this standard SAIJ adjuster acts only as a travel stop and not a lock; consider the SAIL or BSAI series for true load-holding requirements.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 15 mm nominal stroke, 10 mm adjustment range, PT port threads, and the required mounting interface. Because the stroke is under 300 mm, side-load concerns are minimal, but ensure the SUS304 rod material is specified for environments requiring high corrosion resistance.
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 SAIJ40BX15-10 FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder generates 628N of push force and 528N of pull force. At the maximum operating pressure of 1.0 MPa, it can generate up to 128 kgf.
The rear adjuster screw acts as an external stopper that lets you mechanically shorten the 15 mm nominal stroke. You can tune the effective travel window down to 5 mm without changing the cylinder or adding external stops, though it only stops the load and does not lock it without live air.
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