Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-50
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX80-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 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 SAIJ40AX80-50
The AirTAC SAIJ40X80-50 is a double-acting, double-rod ISO 15552 profile cylinder engineered for applications requiring exact end-position tuning. The integrated rear adjusting screw allows you to trim the nominal 80mm stroke back by up to 50mm, providing a highly versatile 30-80mm usable travel window without swapping out the physical cylinder.
This unit features a SUS420J2 stainless steel rod for enhanced corrosion resistance and features variable air cushions at both ends to decelerate the load smoothly. Because the rear stopper only restricts travel and does not lock the piston, maintaining position requires continuous live air pressure. For load-holding without air, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAIJ40AX80-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SAIJ40AX80-50 Is Used
Product Changeovers
Dial in the exact 30-80mm stroke during format changeovers on a packaging line, accommodating varied carton sizes without physically replacing the actuator.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to prevent mechanical crashes, using the rear screw to set the precise resting point.
Variable Positioning
Provide adjustable physical stops for assembly stations that need to press or locate components at slightly different depths based on the production run.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-50 the Right Cylinder?
Selecting the SAIJ40X80-50 is ideal when a machine handles multiple product sizes and requires a variable end-stop rather than a fixed 80mm stroke. This adjustable design saves engineering time during commissioning by allowing on-the-fly tweaks to the 30-80mm travel range. To match an ISO 15552 replacement, verify the 40mm bore, 80mm stroke, 50mm adjustment, PT G1/4 port, and mounting style. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ40AX80-50 FAQ
At 0.7MPa, the push force increases to 879N.
The rear adjuster acts as a mechanical stop that shortens the nominal 80mm stroke. With the -50 code, you can reduce the effective travel by up to 50mm, creating a 30-80mm usable window. It requires live air to hold position and does not function as a lock.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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