Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-75
The AirTAC SAIJ80X800-75 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 4523N push force at 0.9 MPa, making it suitable for heavy-duty handling. By integrating a rear stopper screw, this model allows you to dial back the nominal 800 mm stroke by up to 75 mm, creating a precise 725-800 mm usable travel window for exact end-position tuning.
This variant features a SUS304 stainless steel piston rod for superior corrosion resistance and uses PT tapered port threads for a reliable connection. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE or DMSE switches. Because the adjuster acts purely as a mechanical stop alongside the variable air cushions, it decelerates the load but does not hold position without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80BX800-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80BX800-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 725-800 mm window during machine commissioning without replacing the cylinder or adding external stopper blocks.
Product Size Changeover
Quickly adjust the effective travel distance on packaging lines when handling different carton lengths or product widths.
Long-Stroke Assembly Press
Fine-tune the final approach distance in automated assembly stations while utilizing the 80 mm bore's 4523N push force at 0.9 MPa.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-75 the Right Cylinder?
Choose this 80 mm bore when your application requires higher thrust than a 63 mm cylinder (which provides 2805N push at 0.9 MPa) but does not need the full 7068N output of a 100 mm unit. The adjustable stroke is ideal for machine setups requiring fine end-position tuning during commissioning or product changeover, eliminating the need to swap cylinders or bolt on external stops.
For an exact ISO 15552 replacement match, pair this cylinder's 80 mm bore, 800 mm stroke, 75 mm adjustment, PT port threads, and standard mounting interface. Note that at an 800 mm stroke, the 25 mm diameter rod is subject to bending under high side loads, so an external guide rail should be used to prevent rod damage. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. If your process requires true load holding without live air, consider the SAIL or BSAI 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 SAIJ80BX800-75 FAQ
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back from the 800 mm nominal stroke by up to 75 mm, providing a usable 725-800 mm positioning window. It decelerates the end of travel but does not lock the load without continuous air pressure.
At 0.9 MPa operating pressure, this 80 mm bore cylinder generates 4523N of push force and 4071N of pull force. It operates at speeds between 30 and 800 mm/s.
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