Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX280-50 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-50
The AirTAC SAIJ80X280-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to shorten the effective travel from 280 mm down to 230 mm without adding external stops. The extruded aluminum barrel integrates sensor grooves on three sides, allowing you to easily mount position switches if needed.
Unlike a fixed-stroke SAI cylinder, this model lets you dial in the exact retract end-position during commissioning or product changeovers. The rear adjuster acts purely as a mechanical stop to set the travel limit, working alongside the 36 mm variable air cushions to manage end-of-stroke deceleration. It does not hold the load without live air pressure, so for fail-safe load holding you would need a SAIL or BSAI variant.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-50 |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-50
| 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 SAIJ80BX280-50 Is Used
Product Changeover Dials
Quickly adjust the retract stop from 230 to 280 mm to accommodate different package lengths on a packaging line without swapping out the entire actuator.
Machine Setup Calibration
Fine-tune the end-of-stroke position during initial commissioning to perfectly align heavy pushing forces without relying on external mechanical shims.
Variable End-Stop Forming
Set precise travel limits for press operations where the material thickness varies, using the rear stopper to prevent over-travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX280-50 the Right Cylinder?
Choose this 80 mm bore cylinder when your application requires high pull force (2268 N at 0.5 MPa) and precise end-position tuning over a 230-280 mm travel window. Because the nominal stroke is 280 mm, the M20x1.5 rod thread and 25 mm rod diameter provide excellent rigidity, but you should still use an external guide rail to support any heavy lateral loads.
This SAIJ model is dimensionally interchangeable per ISO 15552. To match this configuration exactly when replacing a cylinder, specify an 80 mm bore, 280 mm stroke, 50 mm adjustment range, PT tapered ports, SUS304 (B) rod material, and no magnet. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR mounts.
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 SAIJ80BX280-50 FAQ
At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you mechanically shorten the nominal 280 mm stroke by up to 50 mm, creating a usable travel window of 230 to 280 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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