Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-30
The AirTAC SAIJ80X50-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 50mm nominal stroke back by up to 30mm. This yields a highly flexible 20-50mm usable travel window, allowing precise end-position tuning during commissioning without swapping hardware. It delivers 2513N of push force at 0.5 MPa and uses a durable SUS420J2 stainless steel rod to resist corrosion.
Equipped with PT tapered G3/8 ports and variable air cushions at both ends, this model safely decelerates moving loads. The rear adjuster functions strictly as a travel stop to set the retract position and does not hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80AX50-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX50-30 Is Used
Machine Changeover
Dial in the 20-50mm travel window during product size changes to set exact retract positions without machining new external stopper blocks.
Variable End Stops
Fine-tune the discharge stroke on a packaging conveyor to accommodate cartons of slightly varying widths directly at the machine.
Commissioning Tuning
Trim back the full 50mm stroke by up to 30mm to perfectly time a pressing operation, avoiding the need to remove the cylinder for shimming.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-30 the Right Cylinder?
Choose this 80mm bore when an application requires substantial thrust, such as 2513N push at 0.5 MPa, but demands on-the-fly mechanical end-stop adjustments. If your process only needs 1374N of push force, stepping down to a 50mm bore saves space and air consumption. The 30mm adjustment range is ideal for product changeovers on a packaging line, replacing fixed-stroke SAI cylinders when exact positioning varies by batch.
When replacing an ISO 15552 cylinder, match the 80mm bore, 50mm stroke, PT G3/8 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that SAIJ omits FB, CA, CB, and CR mounts. For load-holding without continuous air, integrate an external rod lock or select the SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ80AX50-30 FAQ
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke. For this model, you can trim the 50mm nominal stroke back by up to 30mm, providing an effective travel window of 20-50mm. It sets the end position but does not lock the load without live air pressure.
At 0.5 MPa operating pressure, this 80mm bore cylinder generates 2513N of push force and 2268N of pull force. It can deliver up to 4523N of push force at 0.9 MPa.
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