Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40 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 SAIJ80AX350-40
The AirTAC SAIJ80X350-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 310 to 350 mm. Delivering 3518 N of push force at 0.7 MPa, it is equipped with a 25 mm carbon steel rod and M20x1.5 rod threading. The extruded aluminum barrel incorporates sensor grooves on both sides for straightforward position detection.
This configuration utilizes a SUS420J2 stainless steel rod material (option A) and PT tapered port threads. Because the 350 mm stroke is substantial, the 25 mm rod diameter provides necessary rigidity, though an external guide is strongly recommended to manage side loads over this extended travel distance.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40 |
|---|---|
| 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 SAIJ80AX350-40
| 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 SAIJ80AX350-40 Is Used
Machine Setup Tuning
Dial in the exact 310-350 mm end position during initial commissioning without machining custom spacer blocks.
Product Changeover
Quickly adapt the stroke length on packaging lines when switching to different carton or product sizes.
Long-Stroke Assembly
Leverage the 2513 N push force at 0.5 MPa to move heavy pallets while trimming travel to prevent over-travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40 the Right Cylinder?
Selecting this 80 mm bore cylinder makes sense when your machine requires substantial thrust—stepping down to a 63 mm bore drops the 0.5 MPa push force to 1559 N, while stepping up to a 100 mm bore increases it to 3927 N. The integrated rear adjuster allows you to fine-tune the end position at commissioning or during product changeover without swapping the cylinder or adding external stops, a major advantage over a fixed-stroke SAI model.
For load-holding applications, remember that the rear adjuster acts only as a travel stop and the air cushions manage deceleration; neither will hold a load without live air pressure. For true locking, consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL and BSAI cylinder series. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts.
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 SAIJ80AX350-40 FAQ
The rear adjuster screw lets you shorten the nominal 350 mm stroke by up to 40 mm, providing an effective travel range of 310 to 350 mm. This allows precise end-position tuning at commissioning without changing the cylinder or adding external stops.
At an operating pressure of 0.7 MPa, the SAIJ80X350-40 generates 3518 N of push force and 3268 N of pull force. It can deliver a maximum push force of 4523 N at 0.9 MPa.
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Covers non-human-caused product damage.
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