Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX375-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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
- Stroke375 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 SAIJ80BX375-50S
The AirTAC SAIJ80X375-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 325 to 375 mm, allowing you to dial back the nominal 375 mm stroke by up to 50 mm during commissioning without adding external stops.
This SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel features sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses PT tapered ports and offers variable air cushioning at both ends to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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 SAIJ80BX375-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×375 | 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 SAIJ80BX375-50S Is Used
Product Changeover
Dial in the exact retract distance up to 50 mm when switching product sizes on a packaging line, avoiding mechanical rebuilds.
Machine Setup
Fine-tune the end position at commissioning to hit a precise 325 mm retraction point without adding external stopper hardware.
Variable End Stops
Adjust the travel window dynamically for diverter arms or gating mechanisms that require flexible positioning within the 325-375 mm range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-50S the Right Cylinder?
Choose this 80 mm bore cylinder when your application requires substantial force (up to 4523 N at 0.9 MPa) alongside precise end-position tuning. If your setup demands less force, stepping down to a 63 mm bore yields 2805 N at 0.5 MPa, whereas moving up to a 100 mm bore provides 7068 N at 0.9 MPa. The adjustable 50 mm window is ideal for product changeovers, letting you fine-tune the retract end-position without swapping the cylinder. Mounting options include the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
Because the 375 mm stroke is relatively long, the 25 mm rod and M20x1.5 thread provide rigidity, but an external guide is still recommended to prevent excessive side-loading on the unsupported rod. Remember that the rear adjuster and air cushions act only as travel stops and deceleration devices; they do not hold the load without live air pressure. For fail-safe load holding, consider the SAIL or BSAI series. To replace an ISO 15552 cylinder, match the 80 mm bore, 375 mm stroke, 50 mm adjustment, PT G3/8 port, and -S magnet specifications.
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 SAIJ80BX375-50S FAQ
Its maximum thrust is 513 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the effective travel from the 375 mm nominal stroke down to 325 mm. This creates a 50 mm adjustable window for fine-tuning the end position at commissioning, but it acts only as a stop and does not lock the load without air pressure.
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