Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 450mm 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
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-75
The AirTAC SAIJ80X450-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the 450 mm nominal travel by up to 75 mm, creating a 375-450 mm usable window for precise end-position tuning. It delivers a robust 2513 N push force at 0.5 MPa, scaling up to 4523 N at 0.9 MPa, making it well-suited for heavy positioning tasks. The piston rod is constructed from SUS420J2 stainless steel for enhanced corrosion resistance, and the extruded aluminum barrel includes sensor grooves on both sides.
This model features PT tapered port threads (G3/8) and operates at speeds of 30-800 mm/s with variable air cushions at both ends. The rear adjuster functions purely as an external mechanical stop to set the retract position without needing to swap cylinders or add external stops. It is not a locking device and cannot hold a load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80AX450-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SAIJ80AX450-75 Is Used
Product Changeover Adjustment
Dial in the retract end-position by up to 75 mm during product size transitions on a packaging line without disassembling the cylinder assembly.
Machine Setup Calibration
Fine-tune the 375-450 mm travel window during commissioning to perfectly time heavy press operations without adding external mechanical stops.
Variable End-Stop Positioning
Act as a heavy-duty 2513 N pusher on a conveyor that requires occasional stroke length adjustments to handle varying package dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-75 the Right Cylinder?
Choose this 80 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or frequent product changeovers, stepping up from a 50 mm bore that only provides 982 N of push force at 0.5 MPa. Because the stroke is 450 mm, the 25 mm rod diameter and M20x1.5 rod thread carry substantial side load, but an external guide rail is still recommended for long unsupported travel to prevent premature wear.
When matching ISO 15552 replacement dimensions, verify the 80 mm bore, 450 mm stroke, 75 mm adjustment range, PT port thread, and the specific mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). As no magnet is specified, this SKU will not trigger position sensors without adding a magnetic piston.
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 SAIJ80AX450-75 FAQ
At 0.5 MPa it provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster acts as a mechanical stop that trims the 450 mm nominal stroke back by up to 75 mm, giving a usable travel window of 375-450 mm. It sets the end position but does not lock the load without live air pressure.
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