Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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
- Stroke375 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-20S
The AirTAC SAIJ80X375-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 375 mm nominal stroke that can be fine-tuned down by up to 20 mm, yielding a usable travel window of 355-375 mm. Delivering a robust 3518 N push force at 0.7 MPa, this bore size is built for heavy-duty positioning. The extruded aluminum barrel features sensor grooves on both sides, and the integrated -S magnet enables position detection with AirTAC CMSE reed or DMSE electronic solid-state switches.
This model features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. Because the 375 mm stroke is relatively long, the 25 mm rod diameter and M20x1.5 rod thread provide substantial rigidity, though an external guide is still recommended to manage side loads on unsupported extensions. The rear adjuster acts purely as a mechanical stop to set the end position and relies on the variable air cushions at both ends for deceleration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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 SAIJ80AX375-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×375 | 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 SAIJ80AX375-20S Is Used
Product Size Changeover
Dial in the 355-375 mm retract position during format changeovers on packaging lines, using the rear screw to match new product depths without replacing the cylinder.
Machine Setup Calibration
Fine-tune the end-of-stroke stop during commissioning to achieve exact mechanical alignment, preventing crashes and ensuring precise repeatability.
Heavy-Duty Positioning
Leverage the 3518 N push force at 0.7 MPa to move and position heavy pallets or fixtures, using the adjustable stop to set the exact ejection distance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-20S the Right Cylinder?
Select this 80 mm bore when an application requires significant thrust—such as 3518 N push at 0.7 MPa—combined with exact end-position tuning. If your process demands less force, stepping down to a 63 mm bore yields 2182 N push at 0.7 MPa; stepping up to a 100 mm bore provides 5497 N. The adjustable 355-375 mm window is ideal for product changeovers on a line, allowing you to dial in the retract distance without swapping hardware or adding external stops.
When specifying a replacement, match the 80 mm bore, 375 mm stroke, 20 mm adjustment range, PT tapered port threads, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR. Remember that the rear adjuster is a travel stop, not a lock; if the machine loses air pressure, the cylinder will not hold its load. For true load-holding without live air, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ80AX375-20S FAQ
At 0.5 MPa it provides 2513 N push and 2268 N pull force. At 0.7 MPa, the push force increases to 3518 N, and it reaches a maximum push force of 4523 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the 375 mm nominal stroke by up to 20 mm, creating a usable travel window of 355-375 mm. This mechanical stop sets the retract end position but does not lock the load; deceleration is handled by the standard air cushions at both ends.
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