Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30S
The AirTAC SAIJ80X135-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 105-135 mm. Delivering a robust 3518 N push force at 0.7 MPa, it handles heavy positioning tasks with ease. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for precise detection via AirTAC CMSE reed or DMSE solid-state switches.
This model utilizes a 25 mm carbon steel rod and PT tapered G3/8 ports. The rear stopper allows you to fine-tune the end position at commissioning without swapping the cylinder or adding external stops. Remember that the adjuster acts as a travel stop and relies on the air cushion for deceleration—it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 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 SAIJ80X135-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×135 | 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 SAIJ80X135-30S Is Used
Machine Changeover
Dial in the exact end-stop up to 30 mm during product size changes without swapping hardware.
Heavy Positioning
Leverage 3518 N of push force at 0.7 MPa to move heavy pallets or fixtures into their exact final position.
Commissioning Fine-Tune
Trim the travel window to 105-135 mm during setup to perfect the stroke and avoid mechanical hard stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30S the Right Cylinder?
Choose this 80 mm bore when you need substantial thrust, stepping up from the 50 mm bore which provides 1374 N push at 0.7 MPa. The 30 mm adjustment range is ideal for product changeovers on a line, allowing you to dial in the exact end-stop without mechanical modifications. For load-holding requirements without live air, consider the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 135 mm nominal stroke, PT G3/8 ports, and the -S magnet. The SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the stroke is 135 mm, side-load risks are moderate, but always ensure proper external guiding for heavy loads.
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 SAIJ80X135-30S FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder provides 3518 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 135 mm down to 105 mm. It sets the end position but does not lock the load without continuous air pressure.
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