Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 75mm 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
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50
The AirTAC SAIJ80X75-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa, while the integrated adjustment mechanism allows you to dial back the nominal 75mm stroke to a minimum of 25mm. This creates a highly versatile 25-75mm usable travel window for precise end-position tuning during commissioning.
Built with a SUS304 stainless steel rod and PT tapered ports, this unit is engineered for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. The rear adjuster acts purely as a mechanical stop to fine-tune the retract position, meaning it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80BX75-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SAIJ80BX75-50 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 25 and 75mm on packaging equipment to accommodate different package sizes without changing hardware.
Machine Changeover
Rapidly adjust the effective stroke during product line transitions to meet new dimensional requirements quickly and accurately.
Clamping Force Calibration
Leverage the 2513N push force to secure heavy workpieces while fine-tuning the clamping distance to prevent material deformation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50 the Right Cylinder?
Choose this 80mm bore when your application requires substantial force (2268N pull at 0.5 MPa) but demands variable end-stops for rapid product changeover. If your process needs less force, stepping down to a 63mm bore yields 1402N pull, whereas moving up to a 100mm bore provides 3681N pull. The SAIJ80X75-50 is selected over a fixed-stroke SAI specifically to eliminate external stops and shims during machine setup.
When matching an ISO 15552 replacement, verify the 80mm bore, 75mm stroke, 50mm adjustment range, PT port thread, and your required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted from this adjustable series. For applications requiring the cylinder to hold a load without air pressure, the SAIJ adjuster is insufficient; consider the SAIL or BSAI locking cylinder series instead.
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 SAIJ80BX75-50 FAQ
It features a rear adjusting screw that acts as a mechanical stop, allowing you to shorten the effective stroke from its nominal 75mm down to 25mm, providing a 25-75mm usable travel window for precise commissioning.
At 0.5 MPa operating pressure, the SAIJ80X75-50 generates 2513N of push force and 2268N of pull force. It can reach up to 4523N push force at 0.9 MPa.
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