Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 950mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40
The AirTAC SAIJ80X950-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod and PT tapered ports. By integrating an external stopper screw, this actuator allows you to fine-tune the retract position on the fly, creating a usable travel window between 910 and 950 mm without swapping out the entire unit.
Because the 950 mm stroke is substantial, the 25mm rod diameter and M20x1.5 rod thread provide necessary rigidity, though an external guide is still recommended to manage side loads on long extensions. The extruded aluminum barrel includes sensor grooves on both sides for CMSE or DMSE switches, though a magnet is not included in this configuration. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×950 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX950-40 Is Used
Machine Changeover
Quickly dial in the 910-950mm retract position via the rear screw when switching between product sizes on a packaging line, avoiding mechanical rebuilds.
End-Stop Calibration
Fine-tune the final resting position of heavy forming presses with 2513N of push force at 0.5 MPa, ensuring precise alignment during initial commissioning.
Variable Diverting
Adjust the stroke length on automated sorting gates to accommodate different package depths without needing to halt production for cylinder swaps.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-40 the Right Cylinder?
Selecting this 80mm bore actuator makes sense when your application requires significant thrust—such as the 2513N push force at 0.5 MPa—but also demands variable end-position tuning during product changeovers. If you need less force, stepping down to a 63mm bore yields 1559N, whereas staying with this model provides a robust safety margin. The 40mm adjustment window is ideal for dialing in exact retract distances during commissioning, replacing the need to bolt on external stops or swap a fixed-stroke SAI cylinder.
When specifying this ISO 15552 replacement, confirm the 80mm bore, 950mm nominal stroke, PT port thread, and the absence of a magnet (-S). Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series. Given the 950mm length, ensure your setup includes external guidance to prevent rod binding under heavy side loads.
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 SAIJ80 Adjustable Cylinder SAIJ80AX950-40 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear stopper screw allows you to shorten the effective travel from the 950mm nominal stroke down to 910mm, providing a 40mm adjustable window. It acts as a mechanical stop and does not lock the load without continuous air pressure.
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