Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-20
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX65-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 65mm 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
- Stroke65 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 SAIJ40AX65-20
The AirTAC SAIJ40X65-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to fine-tune the end position during commissioning. With a 65 mm nominal stroke and a 20 mm adjustment range, it provides a usable travel window of 45 to 65 mm without requiring external stops.
This model features a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads (G1/4). The extruded aluminum barrel includes sensor grooves on both sides. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-20 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 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 SAIJ40AX65-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×65 | 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 SAIJ40AX65-20 Is Used
Machine Changeover
Quickly dial in the 45-65 mm travel window during product size changes without swapping cylinders or adding mechanical shims.
End-Position Tuning
Fine-tune the retract stroke end during commissioning to perfectly seat parts, absorbing mechanical tolerances in the fixture.
Variable End Stops
Ideal for assembly stations where the rear adjuster sets a precise stopping point for different tooling lengths on the fly.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-20 the Right Cylinder?
The adjustable stroke is perfect for machine setups requiring variable end-stops or product changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for load-holding without pressure, consider an external rod lock or the SAIL series. For ISO 15552 replacement matching, specify: 40 mm bore, 65 mm stroke, 20 mm adjustment, PT port, desired mounting, and no magnet.
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 SAIJ40AX65-20 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm. This creates a usable travel window of 45 to 65 mm, letting you fine-tune the end position at commissioning without changing the cylinder.
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1-Year Warranty
Covers non-human-caused product damage.
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