Airtac SAIJ40 Adjustable Cylinder SAIJ40AX50-40
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX50-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 50mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX50-40
The AirTAC SAIJ40X50-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 50 mm stroke that can be dialed back by up to 40 mm, yielding a highly versatile 10-50 mm usable travel window for precise end-position tuning.
This variant is configured with an SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE or DMSE switches later if position feedback becomes necessary.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX50-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX50-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX50-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 SAIJ40AX50-40 Is Used
Product Changeovers
Dial in the exact 10 to 50 mm end-stop during line format changes without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the retraction point at commissioning to perfectly seat parts, absorbing mechanical tolerances directly via the rear adjuster screw.
Adjustable Ejection
Vary the ejection stroke length on the fly for lightweight components, using the 40 mm adjustment range to safely push varying part sizes.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX50-40 the Right Cylinder?
The adjustable 10-50 mm travel window is ideal for machine setups requiring frequent product changeovers, eliminating the need to physically swap cylinders or bolt on external stoppers. The PT port thread ensures a tight, tapered seal in standard pneumatic manifolds.
Remember that the rear adjuster functions strictly as a travel stop, not a locking device; it cannot hold a load without continuous live air pressure. For applications requiring true load-holding without air, consider an AirTAC SAIL or BSAI cylinder instead. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ40AX50-40 FAQ
The rear adjuster acts as a mechanical stop that trims the effective travel. Because the nominal stroke is 50 mm and the adjustment range is 40 mm, you can set the usable stroke anywhere within a 10 to 50 mm window without changing the cylinder itself.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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