Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50S
The AirTAC SAIJ80X90-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position. It provides a usable travel window of 40 to 90 mm, giving you precise control over the retract distance without needing to swap out the physical unit. This 80 mm bore generates a robust 2513 N of push force and 2268 N of pull force at a 0.5 MPa operating pressure.
This specific configuration includes a SUS304 stainless steel rod (code B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides, and because this model includes a magnet (-S), it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise position feedback.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80BX90-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SAIJ80BX90-50S Is Used
Machine Changeovers
Dial in the exact retract distance from 40 to 90 mm during product size changes without physically replacing the cylinder or adding external stops.
End-Position Tuning
Perfect for dialing in the precise end-of-stroke position during initial commissioning to avoid crushing delicate workpieces.
Washdown Assembly
The SUS304 stainless steel rod combined with the adjustable 40-90 mm window makes it ideal for food or chemical processing lines requiring corrosion resistance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50S the Right Cylinder?
Choose this adjustable-stroke model when your application requires frequent commissioning fine-tuning or variable end-stops during product changeovers, rather than relying on a fixed-stroke SAI cylinder. If you need slightly less force, stepping down to a 63 mm bore yields 1559 N of push force at 0.5 MPa. If your application requires holding a load without live air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you should consider an SAIL or BSAI cylinder instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 90 mm stroke, 50 mm adjustment range, PT port threads, and the -S magnet requirement. The SAIJ series supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the nominal stroke is under 300 mm, side-load concerns are minimal, but the 25 mm rod and M20x1.5 rod thread provide excellent rigidity for standard loads.
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 SAIJ80BX90-50S FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 50 mm. For this 90 mm stroke model, it creates a usable travel window of 40 to 90 mm, but it is not a lock and cannot hold the load without live air pressure.
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