Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-50S
The AirTAC SAIJ40X130-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 879N push force at 0.7 MPa. By turning the external adjusting screw, you can fine-tune the effective travel anywhere within an 80-130mm window, providing precise end-position control without adding external stops. The stainless SUS304 rod material offers excellent corrosion resistance for demanding environments.
This unit includes a magnetic piston for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches mounted in the dual-side sensor grooves. It uses a PT tapered port thread and relies on adjustable air cushions at both ends to decelerate the load smoothly. Remember that the rear adjuster acts only as a travel stop; it will not hold a load without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 130 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 SAIJ40BX130-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×130 | 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 SAIJ40BX130-50S Is Used
Machine Setup & Changeover
Dial in the exact 80-130mm travel during product size changeovers without physically swapping the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the retract end-position at commissioning to absorb mechanical tolerances and ensure precise seating of parts.
Corrosive Environments
Leverage the SUS304 stainless steel rod for reliable linear motion in packaging or processing areas exposed to moisture and washdowns.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-50S the Right Cylinder?
Choose this 40mm bore adjustable cylinder when your application requires variable end-stops for product changeovers, stepping up from a 32mm bore that provides 563N of push force at 0.7 MPa. The 50mm adjustment range allows wide commissioning flexibility compared to a fixed-stroke SAI cylinder, letting you dial in the exact 80 to 130mm travel on the machine floor. To replace an ISO 15552 cylinder, match the 40mm bore, 130mm nominal stroke, 50mm adjuster, PT G1/4 port, and the -S magnet.
For load-holding requirements without live air pressure, this adjuster cannot serve as a lock; consider the AirTAC SAIL or BSAI series instead. Because the 130mm stroke is relatively short, side-load risks are minimal, but always ensure the M12x1.25 rod thread is aligned properly to prevent premature seal wear.
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 SAIJ40BX130-50S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you trim the effective stroke back by up to 50mm. This creates a usable travel window of 80 to 130mm, which can be fine-tuned during commissioning without replacing the cylinder.
At 0.7 MPa operating pressure, the SAIJ40X130-50-S provides 879N of push force and 528N of pull force. It can deliver up to 1130N of push force at 0.9 MPa.
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