Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30S
The AirTAC SAIJ80X140-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated rear stroke adjuster. By turning the rear stopper screw, you can fine-tune the effective travel down by up to 30 mm, creating a usable stroke window of 110 to 140 mm. This on-machine adjustability eliminates the need to physically swap cylinders or bolt on external stops during commissioning or product changeovers.
Featuring an 80 mm bore, it delivers 2513 N of push thrust and 2268 N of pull thrust at a 0.5 MPa operating pressure. The extruded aluminum barrel includes sensor grooves on both sides, and because this is an -S variant, it contains a magnet ready for CMSE reed and DMSE electronic solid-state switches. It uses a PT tapered G3/8 port and a robust 25 mm carbon steel rod with an M20x1.5 thread, providing excellent resistance to side loads.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAIJ80X140-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80X140-30S Is Used
Changeover Calibration
Dial in the 110-140 mm travel window during product size changeovers on a packaging line without replacing the cylinder or repositioning hard stops.
Machining End-Stop
Precisely set the retract position of a machining fixture to compensate for tool wear or slight material thickness variations using the rear adjuster.
Diversion Gate Stroke
Adjust the actuation distance of a sorting gate on the fly to handle different package heights while utilizing the 2513 N of push force at 0.5 MPa.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30S the Right Cylinder?
Select this 80 mm bore model when your application requires higher mid-range force (2513 N push at 0.5 MPa) and you need to dial in the exact end position on the fly. If your process demands less force, stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927 N. Choose the SAIJ adjustable-stroke series over a fixed SAI cylinder when you anticipate needing precise retract-end tuning during machine setup or when accommodating slight variations in product sizes on a conveyor line.
For a direct ISO 15552 interchangeable replacement, match the 80 mm bore, 140 mm nominal stroke, 30 mm adjustment range, PT G3/8 port threads, and the -S magnet option. Mounting choices for this profile cylinder include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Keep in mind the rear adjuster acts only as a travel stop and relies on air cushioning for deceleration; it does not hold the load without live air. For fail-safe load holding without pressure, consider an external pilot-operated check valve or the AirTAC SAIL or BSAI locking cylinders.
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 SAIJ80X140-30S FAQ
The rear adjusting screw acts as a mechanical stopper that limits the retract stroke. For this model, you can trim the effective travel by up to 30 mm, providing a usable stroke window between 110 and 140 mm. The screw sets the end position, while the built-in air cushion handles deceleration.
At a 0.5 MPa operating pressure, the SAIJ80X140-30-S generates 2513 N of push force and 2268 N of pull force. If you need higher force, a 100 mm bore provides 3927 N of push at the same pressure.
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