Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-50
The AirTAC SAIJ40X150-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 628N of push force and 528N of pull force at 0.5 MPa. A tapered PT G1/4 port supplies air to the 16mm carbon steel rod, while the extruded aluminum barrel features dual sensor grooves for straightforward position feedback integration.
This specific SKU provides a 100-150 mm usable travel window, allowing you to dial back the nominal 150 mm stroke by up to 50 mm during commissioning. It features an SUS304 stainless steel rod for superior corrosion resistance and utilizes adjustable air cushions at both ends to decelerate the moving load smoothly.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 SAIJ40BX150-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 SAIJ40BX150-50 Is Used
Stroke Tuning at Commissioning
Dial in the exact 100-150mm travel window during machine setup to perfectly time the end-of-stroke position without external shims.
Product Changeover
Quickly readjust the retract stop for different product sizes on a single line, leveraging the 50mm adjustment range to handle format variations.
Corrosive Assembly Tasks
Utilize the SUS304 stainless steel rod in light manufacturing environments where moisture or minor chemical exposure requires enhanced rod material resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-50 the Right Cylinder?
Choose this 40mm bore when an application requires precise end-position tuning without physically swapping the cylinder or adding bulky external stops. If your process demands higher thrust, stepping up to the 50mm bore yields 982N of push force at 0.5 MPa; conversely, dropping to a 32mm bore reduces output to 402N.
The rear adjuster acts strictly as a travel stop and cannot hold a load without continuous live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series. When replacing an ISO 15552 cylinder, match the 40mm bore, 150mm stroke, 50mm adjustment, PT G1/4 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ40BX150-50 FAQ
The rear adjuster is an external stopper that mechanically limits the retract travel. For this model, it allows you to shorten the effective stroke from 150 mm down to 100 mm, providing a 50 mm tuning window to fine-tune the end position without swapping the cylinder.
At a 0.5 MPa operating pressure, the SAIJ40X150-50 generates 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
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