Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 30mm 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
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20S
The AirTAC SAIJ80X30-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5MPa. Because this model combines a 30mm nominal stroke with a 20mm adjustment range, you can dial the effective travel down to a 10-30mm window for exact positioning. The extruded aluminum barrel features sensor grooves on both sides, and the included magnet (-S) directly supports AirTAC CMSE reed and DMSE electronic solid-state switches.
This adjustable-stroke design allows you to fine-tune the retract end position at commissioning without adding external stops or swapping the cylinder. It uses a carbon steel piston rod with an M20x1.5 thread and a PT tapered port. The rear adjuster functions strictly as a travel stop to set the end position, not as a lock, so it will not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 30 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 SAIJ80X30-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×30 | 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 SAIJ80X30-20S Is Used
Short-Stroke Clamping
Dial in the exact 10-30mm clamping travel for delicate parts, using the rear stopper to prevent overtravel without adding external bumpers.
Machine Changeover
Quickly adjust the retract end position during product size changes on a line, fine-tuning the stroke window on the fly instead of re-mounting hardware.
Precise End-Positioning
Leverage the 2513N push force at 0.5MPa to seat components securely, relying on the rear adjuster to set the exact final position at commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X30-20S the Right Cylinder?
Choose this 80mm bore when an application requires substantial thrust, such as 2513N push or 2268N pull at 0.5MPa, but only needs a very short movement. If you need less force, stepping down to a 63mm bore provides 1559N push at 0.5MPa. The adjustable 10-30mm travel window is ideal for setups requiring precise end-stop tuning during product changeovers. For load-holding without continuous air pressure, you must use an external rod lock or pilot-operated check valve, or select an AirTAC SAIL or BSAI cylinder.
To replace an existing cylinder, match the 80mm bore, 30mm nominal stroke, 20mm adjustment, PT port thread, and the -S magnet requirement. This SAIJ model supports a mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Operating speed ranges from 30-800mm/s, and the variable air cushion at both ends helps manage deceleration.
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 SAIJ80X30-20S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke. For this SAIJ80X30-20-S model, you can reduce the 30mm nominal stroke by up to 20mm, creating a usable travel window of 10-30mm. It sets the end position but does not lock the load without live air.
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