Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-20 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 SAIJ80BX90-20
The AirTAC SAIJ80X90-20 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 70-90 mm, letting you dial back the nominal 90 mm stroke by up to 20 mm without adding external stops. This bore delivers a push force of 2513 N at 0.5 MPa, making it suitable for medium to heavy actuation tasks.
Equipped with a SUS304 stainless steel rod and PT tapered ports, this unit resists corrosion while ensuring a tight pneumatic seal. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It supports a speed range of 30-800 mm/s and uses adjustable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-20 |
|---|---|
| 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 SAIJ80BX90-20
| 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 SAIJ80BX90-20 Is Used
Machine Changeover
Quickly adjust the 70-90 mm travel window during product size changes on a packaging line without swapping out the entire actuator.
Variable End-Stop Setup
Fine-tune the retraction end position at commissioning to achieve precise mechanical alignment without machining external stopper blocks.
Medium-Heavy Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavier jigs or fixtures into exact position before a secondary operation begins.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-20 the Right Cylinder?
Select this 80 mm bore cylinder when you need a robust 2513 N push force at 0.5 MPa, or step down to a 63 mm bore (1559 N) if your application requires less thrust. The adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers, replacing the need for a fixed-stroke SAI cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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. For load-holding requirements without continuous pressure, consider an external rod lock or pilot-operated check valve. This model uses PT ports and a standard SUS304 rod, but it does not include a magnet for position sensing.
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 SAIJ80BX90-20 FAQ
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder provides a push force of 2513 N and a pull force of 2268 N. At 0.7 MPa, the push force increases to 3518 N.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 90 mm down to 70 mm. This creates a 70-90 mm usable travel window for fine-tuning the end position during setup.
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