Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-75S 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 SAIJ80X300-75S
The AirTAC SAIJ80X300-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 225 to 300 mm. Delivering 4523 N of push force at 0.9 MPa, it handles demanding actuation tasks while allowing precise end-position tuning without external stops.
This variant includes a magnet for CMSE and DMSE sensors and uses a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, and the 25 mm carbon steel rod with an M20x1.5 thread provides robust resistance against side loads, though a 300 mm stroke still benefits from an external guide.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-75S |
|---|---|
| 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 SAIJ80X300-75S
| 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 SAIJ80X300-75S Is Used
Product Changeovers
Quickly dial the retract stroke back by up to 75 mm when switching a packaging line to a different carton size, ensuring precise positioning without mechanical rebuilds.
Machine Setup
Fine-tune the end-of-stroke position during commissioning to perfect a pressing or forming operation, absorbing mechanical tolerances directly at the cylinder.
Variable Stops
Act as an adjustable end-stop for diverter gates on a conveyor, allowing operators to reconfigure travel limits for different product widths on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-75S the Right Cylinder?
Choose this 80 mm bore when an application requires more power than a 63 mm cylinder (which provides 2805 N push at 0.9 MPa) but less bulk than a 100 mm unit. The 75 mm adjustment range is perfect for machines processing varying product sizes, letting operators dial in the retract end position on the fly instead of swapping hardware. It supports mounting options Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the stroke reaches 300 mm, supporting the load with an external guide is recommended to prevent rod bending. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding without pressure, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable cylinder exactly, specify the 80 mm bore, 300 mm stroke, 75 mm adjustment, PT port, and -S magnet.
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 SAIJ80X300-75S FAQ
At 0.9 MPa it provides 4523 N of push force and 4071 N of pull force, with a maximum operating pressure of 1.0 MPa. It operates at speeds between 30 and 800 mm/s and features adjustable air cushions at both ends.
The rear adjuster screw lets you shorten the 300 mm nominal stroke by up to 75 mm, creating a usable travel window of 225 to 300 mm. It acts as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
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