Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20
The AirTAC SAIJ80X115-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 95-115 mm, allowing you to dial back the 115 mm nominal stroke by up to 20 mm during commissioning. In the 80 mm bore class, it delivers a robust 2513 N push force and 2268 N pull force at 0.5 MPa, making it well-suited for heavier actuation tasks.
This extruded aluminum barrel design includes sensor grooves on both sides for flexible switch placement. It uses a 25 mm carbon steel rod with an M20x1.5 thread, providing a rigid interface that handles side loads effectively. The variable air cushions at both ends work alongside the rear stopper to decelerate the load smoothly, though the adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAIJ80X115-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAIJ80X115-20 Is Used
Machine Setup Changeover
Fine-tune the 95-115 mm travel window during product size changes on a packaging line without physically replacing the actuator.
Heavy Clamping Positioning
Leverage the 2513 N push force to secure heavy workpieces while dialing in the exact clamping end-stop on the fly.
Variable End-Stop Assembly
Adjust the retract position precisely during multi-part assembly operations, using the rear screw to set the exact depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20 the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but you want to avoid the larger footprint of a 100 mm unit. The 20 mm adjustment range is ideal for product changeovers on a line, letting you fine-tune the end position without swapping the cylinder or adding external stops. If your process demands true load-holding without continuous air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead. This model features PT tapered ports and standard carbon steel rod material. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80X115-20 FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach a maximum push force of 4523 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 115 mm nominal stroke by up to 20 mm, creating a 95-115 mm usable travel window. It is a travel stop, not a lock, so it cannot hold a load without live air pressure.
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