Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50S
The AirTAC SAIJ80X350-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position. With a 350 mm nominal stroke and a 50 mm adjustment range, the usable travel window spans 300 to 350 mm. This bore size delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it well-suited for medium-to-heavy actuation tasks.
This variant includes an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features a magnet for position sensing. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount CMSE reed or DMSE electronic solid-state switches exactly where needed. The rear adjuster acts purely as a mechanical stop to set the deceleration point and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80AX350-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SAIJ80AX350-50S Is Used
Machine Changeover
Dial in the exact 300-350 mm end-stop during product size changeovers without replacing the cylinder or bolting on external physical stops.
Stroke Calibration
Fine-tune the retract position at commissioning to compensate for mechanical wear or assembly tolerances in your fixture.
Variable End Positioning
Adjust the travel end-point on the fly for processes requiring flexible retraction distances on a moving line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50S the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 982 N push at 0.5 MPa) lacks the necessary thrust, but a 100 mm bore (3927 N) would be oversized. The 50 mm adjustable stroke is ideal for product changeovers on a packaging line, letting you dial in the exact 300-350 mm end-stop without swapping out the entire cylinder or adding external stops. Because the total stroke is 350 mm, an external guide is recommended to prevent excessive side-loading on the 25 mm rod and M20x1.5 rod thread. For applications requiring the load to be held mechanically without continuous air pressure, a plain SAIJ is insufficient; consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead. When matching this for an ISO 15552 replacement, verify the 350 mm stroke, 50 mm adjustment, PT tapered port threads, and the -S magnet requirement.
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 SAIJ80AX350-50S FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. If you need higher thrust, stepping up to a 100 mm bore yields 3927 N push at the same pressure.
The rear adjuster screw lets you shorten the effective stroke by up to 50 mm. For a 350 mm nominal stroke, this creates a usable travel window of 300 to 350 mm. The adjuster is a mechanical stop, not a lock, so it cannot hold the load without live air pressure.
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