Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50
The AirTAC SAIJ80X290-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 50mm of stroke trimming. This yields a usable travel window of 240 to 290mm, allowing you to dial in the exact retract end-position during commissioning without swapping out the unit. It delivers 2513N of push force and 2268N of pull force at 0.5MPa, scaling up to 4523N push at 0.9MPa.
This SKU is configured with an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for tracking travel. Because the 290mm stroke is relatively long, the 25mm rod diameter and M20x1.5 rod thread provide rigidity, though an external guide is recommended to manage side loads.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80AX290-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80AX290-50 Is Used
Machine Changeover
Quickly redefine the retract end-stop by up to 50mm when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders.
End-Position Tuning
Fine-tune the 240-290mm travel window during initial setup to perfectly align a 2513N pressing or clamping action without adding external mechanical stops.
Corrosion-Resistant Actuation
Leverage the SUS420J2 stainless steel rod option for assembly machinery in humid or lightly corrosive environments where carbon steel rods would pit.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50 the Right Cylinder?
Choose this 80mm bore when your application requires more thrust than a 63mm cylinder (which provides 1559N push at 0.5MPa) but does not need the full output of a 100mm bore (3927N at 0.5MPa). The 50mm adjustment range is ideal for machinery that undergoes frequent product-size changeovers, allowing operators to redefine the retract stop on the fly. If your process needs to hold a load in place without continuous live air pressure, note that the rear adjuster on this SAIJ acts only as a travel stop, not a locking device; you should instead look at AirTAC SAIL or BSAI clamp-lock cylinders.
When replacing an ISO 15552 cylinder, match these exact parameters: an 80mm bore, 290mm nominal stroke, 50mm adjustment range, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This unit omits the FB, CA, CB, and CR mounts. As with any profile cylinder exceeding 300mm of total travel, supporting the load with an external linear guide will prevent excessive rod 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 SAIJ80 Adjustable Cylinder SAIJ80AX290-50 FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder generates 2513N of push force and 2268N of pull force. If you increase the pressure to 0.9MPa, the push force rises to 4523N.
A rear external stopper screw lets you shorten the effective travel from the 290mm nominal stroke down to 240mm. This creates a 240-290mm adjustable window for precise end-position tuning without replacing the cylinder.
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