Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 750mm 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
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50
The AirTAC SAIJ80X750-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3518N push force at 0.7 MPa and provides a usable travel window of 700 to 750 mm, letting you dial back the nominal 750 mm stroke by up to 50 mm. This built-in adjustability eliminates the need to swap cylinders or bolt on external stops during machine commissioning or product changeover.
This SKU features a SUS304 stainless steel rod (option B) for superior corrosion resistance and carries a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. Remember that the rear adjuster acts only as a travel stop to decelerate the end position; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 750 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 SAIJ80BX750-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×750 | 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 SAIJ80BX750-50 Is Used
Variable End Stops
Dial in the exact retract position within the 700-750 mm window during machine setup without adding physical spacers.
Product Size Changeover
Quickly adapt the stroke end-point on a packaging line when processing different carton lengths.
Commissioning Fine-Tune
Trim up to 50 mm of travel to perfectly align tooling contacts without swapping out the entire actuator.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50 the Right Cylinder?
Select this 80 mm bore when your application requires substantial thrust—stepping up from a 63 mm bore gives you 2182N push force at 0.5 MPa, while dropping to a 50 mm bore reduces it to 982N. Choose this adjustable-stroke SAIJ over a fixed SAI when you need variable end-stops for fine-tuning at commissioning. For load-holding without live air, this cylinder is not a lock; consider an AirTAC SAIL or BSAI instead. To match this ISO 15552 replacement, verify the 80 mm bore, 750 mm stroke, 50 mm adjustment, PT G3/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting.
Because this unit features a 750 mm stroke, the M20x1.5 rod thread and 25 mm rod diameter will carry more side load than smaller bores, but long unsupported strokes still require an external guide to prevent binding.
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 SAIJ80BX750-50 FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder provides a push force of 3518N and a pull force of 2268N. It can reach a maximum push force of 4523N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 750 mm down to 700 mm. It only sets the end position and decelerates the stroke; it does not lock or hold the load without continuous air pressure.
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