Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50
The AirTAC SAIJ80X120-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 70 to 120 mm by allowing you to dial back the nominal 120 mm stroke by up to 50 mm. In the 80 mm bore class, it delivers a robust 4523 N of push force at 0.9 MPa, making it suitable for heavy-duty positioning tasks.
This model uses a G3/8 port and a 25 mm carbon steel rod with an M20x1.5 thread, providing high rigidity against side loads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic sensors. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAIJ80X120-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SAIJ80X120-50 Is Used
Machine Changeover
Dial in the exact end-stop for different product sizes on a packaging line without swapping the actuator.
Stroke Tuning
Fine-tune the 70-120 mm travel window during machine commissioning to perfect the pressing or clamping position.
Product Diverter
Adjust the retract distance on the fly to accommodate varying package dimensions moving along a conveyor belt.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50 the Right Cylinder?
Choose this 80 mm bore cylinder when an application requires substantial force, such as the 2513 N push output at 0.5 MPa, combined with precise end-position tuning during commissioning. The 50 mm adjustment range is ideal for product changeovers on a packaging line, eliminating the need to physically swap cylinders or add external mechanical stops. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard bore, stroke, and port dimensions. It features a PT tapered port thread and no magnet. The rear adjuster acts strictly as a travel stop and deceleration device; it does not hold the load without live air. For fail-safe load holding, consider the SAIL or BSAI series, or use an external pilot-operated check valve.
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 SAIJ80X120-50 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder generates 4523 N of push force and 4071 N of pull force.
A rear-mounted adjusting screw lets you shorten the effective travel from the 120 mm nominal stroke down to 70 mm, providing a 50 mm tuning window without changing the cylinder itself.
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