Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-50S
The AirTAC SAIJ80X300-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 250-300 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it uses a 25 mm carbon steel rod and M20x1.5 thread to handle high side loads. The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet integrates seamlessly with CMSE reed and DMSE solid-state switches.
Unlike a fixed-stroke SAI, the external rear stopper lets you fine-tune the retract end-position during commissioning without adding external stops. The adjuster and the variable air cushions at both ends manage deceleration, but neither acts as a load lock. For dead-end holding without live air, use a SAIL or BSAI cylinder instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80X300-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80X300-50S Is Used
Variable End-Stop Forming
Dial in the 250-300 mm stroke window during setup to accommodate material thickness variations without repositioning the cylinder.
Product Changeover Diverter
Quickly adjust the retract stop by up to 50 mm to handle different package sizes on the fly, minimizing line downtime.
Machine Setup Calibration
Fine-tune the end-of-stroke position during commissioning to achieve precise alignment without swapping out the entire actuator.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-50S the Right Cylinder?
Choose this 80 mm bore when your application requires 2513 N push force at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. The 50 mm adjustment range is ideal for product changeovers on automated lines, allowing you to dial in the exact 250-300 mm travel window on the fly. Because the total stroke is 300 mm, the 25 mm rod needs an external guide to prevent sagging and excessive side-load wear.
This model is dimensionally interchangeable with ISO 15552 cylinders. It features a PT tapered G3/8 port, a standard carbon steel rod, and a -S magnet for position sensing. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
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 SAIJ80X300-50S FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster acts as a mechanical stop that trims the nominal 300 mm stroke back by up to 50 mm, giving a usable travel window of 250-300 mm. It decelerates the load but does not hold it without live air.
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