Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-50
The AirTAC SAIJ80X50-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 50mm stroke by up to 50mm. This creates a highly flexible 0-50mm usable travel window, ideal for applications requiring exact end-position tuning without swapping hardware. It delivers a robust 2513N push force at 0.5MPa and 3518N at 0.7MPa.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. Note that the rear adjuster acts as a travel stop and the air cushions handle deceleration, but neither will hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80BX50-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAIJ80BX50-50 Is Used
Changeover Setup
Dial in the exact end position for new product runs on a packaging line without adding external stopper blocks.
Variable End Stops
Fine-tune the retract distance during machine commissioning to perfect the seating of heavy components.
Clamp Positioning
Adjust the clamping travel window on the fly to accommodate varying material thicknesses.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-50 the Right Cylinder?
Choose this 80mm bore adjustable cylinder when your setup requires precise mechanical end-stop tuning during commissioning or product changeover, rather than a fixed-stroke SAI variant. If your project demands less force, stepping down to a 63mm bore yields 1559N at 0.5MPa. For higher loads, a 100mm bore provides 3927N at 0.5MPa. Since this model has a 50mm nominal stroke, external side-load guides are generally unnecessary, but always verify load support. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). For ISO 15552 interchangeability, match the 80mm bore, 50mm stroke, PT ports, and no 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 SAIJ80BX50-50 FAQ
At 0.5MPa, 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 screw lets you shorten the 50mm nominal stroke by up to 50mm, providing a 0-50mm usable travel window. It acts as a mechanical stop for end-position tuning, not a lock, so it will not hold a load without live air pressure.
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