Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30S
The AirTAC SAIJ80X280-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5 MPa and features a 250-280mm usable travel window, letting you dial back the 280mm nominal stroke by up to 30mm. This built-in adjustability allows for fine end-position tuning during commissioning without swapping out the entire actuator.
This bore 80 unit features a 25mm carbon steel rod and M20x1.5 rod thread, providing excellent resistance against side loads, though the 280mm length still benefits from an external guide. The extruded aluminum barrel includes sensor grooves on both sides, and because this SKU includes a magnet (-S), it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAIJ80X280-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SAIJ80X280-30S Is Used
Machine Changeover
Quickly fine-tune the 250-280mm travel end-position during product size changeovers without bolting on external stops or changing the cylinder.
Variable End Stops
Ideal for diverter gates on conveyors where the actuation distance needs occasional adjustment to handle varying package dimensions accurately.
Assembly Pressing
Provides 2513N of thrust at 0.5 MPa for pressing operations, allowing operators to dial in the exact 30mm adjustment window for perfect part seating.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-30S the Right Cylinder?
Select this 80mm bore actuator when an application requires high thrust combined with variable end-stops, such as accommodating different product sizes on a packaging line. If you need less force, stepping down to a 63mm bore yields 1559N of push force at 0.5 MPa; stepping up to a 100mm bore provides 3927N. Here, the adjustable 250-280mm window is chosen over a fixed-stroke SAI cylinder to eliminate the need for external stopper blocks during machine setup.
Because the stroke is 280mm, ensure proper external guiding to prevent rod bending under offset loads. When replacing an ISO 15552 cylinder, match the 80mm bore, 280mm stroke, PT tapered port thread, and the -S magnet requirement. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ80X280-30-S will not hold a load without live air pressure. For true load-holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80X280-30S FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 30mm. This creates a usable travel window of 250-280mm, which can be fine-tuned during commissioning without changing the cylinder.
At 0.5 MPa operating pressure, it provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
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