Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-75 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 SAIJ80X115-75
The AirTAC SAIJ80X115-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits on-the-fly end-position tuning. With a nominal 115 mm stroke and a 75 mm adjustment range, it provides a usable travel window of 40-115 mm, allowing you to dial in the exact retract distance without adding external stops. Driven by a PT G3/8 port, it delivers a robust 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa.
Built around an extruded aluminum barrel with sensor grooves on both sides, this unit omits the FB, CA, CB, and CR mounting options, utilizing a reduced set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. The 25 mm carbon steel rod and M20x1.5 thread provide excellent side-load resilience, while the 36 mm air cushions at both ends manage end-of-stroke deceleration. Note that the rear screw acts purely as a travel stop, not a lock; the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-75 |
|---|---|
| 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 SAIJ80X115-75
| 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 SAIJ80X115-75 Is Used
Machine Setup & Changeover
Dial in the exact retract distance from 40 to 115 mm during product-size changeovers without swapping the physical cylinder or adding external stopper blocks.
Variable End-Stop Positioning
Fine-tune the end-of-stroke position during commissioning to accommodate varying workpiece sizes on the line, ensuring precise mechanical stops every cycle.
Heavy Payload Handling
Leverage the 2513 N push force at 0.5 MPa to move heavier fixtures and assemblies while retaining the flexibility to adjust the travel window as needed.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-75 the Right Cylinder?
Choose this 80 mm bore when your application requires stepping up from the 50 mm bore (which provides 982 N push force at 0.5 MPa) to a much higher 2513 N thrust class for moving heavier jigs or actuators. An adjustable stroke is selected over a fixed SAI cylinder when you need commissioning fine-tuning or product-size changeovers on the fly, avoiding the need to physically swap out components for varying travel lengths. To match this ISO 15552 replacement exactly, specify the 80 mm bore, 115 mm stroke, 75 mm adjustment, PT G3/8 port, and your required mounting bracket. Since this cylinder lacks a magnet, position sensing requires adding the -S option to support AirTAC CMSE reed or DMSE electronic sensors.
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 SAIJ80X115-75 FAQ
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. If you increase the pressure to 0.9 MPa, the push force reaches 4523 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 115 mm down to 40 mm, creating a 40-115 mm usable window. This screw functions as a travel stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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