Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50S 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 SAIJ80BX750-50S
The AirTAC SAIJ80X750-50-S is a double-acting, adjustable-stroke ISO 15552 profile cylinder. It features a 25 mm carbon steel core but is built with a SUS304 stainless steel rod (code B) for superior corrosion resistance. With a 750 mm nominal stroke and a 50 mm rear adjuster, it provides a usable travel window of 700 to 750 mm. This allows you to dial in the exact retract position at the machine without physically swapping the cylinder. At 0.5 MPa, it generates 2513 N of push force and 2268 N of pull force.
The extruded aluminum barrel includes sensor grooves on both sides. Because this is an -S variant, it contains a magnet ready for AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjustment screw acts purely as a mechanical stop to set the end position. It works alongside the 36 mm variable air cushions at both ends to decelerate the load, but it does not lock the rod in place without live air pressure. For load-holding without continuous pressure, you would need an external rod lock or a SAIL pneumatic lock cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50S |
|---|---|
| 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 SAIJ80BX750-50S
| 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 SAIJ80BX750-50S Is Used
Variable Retract Stops
Fine-tune the 700-750 mm travel window during machine commissioning to set precise end-of-stroke positions for varying product sizes.
Product Changeover
Adjust the rear stopper up to 50 mm to accommodate different package lengths on a packaging line without replacing the cylinder.
Washdown Actuation
The SUS304 stainless steel rod and PT ports provide the corrosion resistance needed for food or beverage processing environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-50S the Right Cylinder?
Choose this 80 mm bore when your application requires substantial thrust, such as 2513 N push at 0.5 MPa or 3518 N at 0.7 MPa. If your force needs are lower, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. The 50 mm adjustment range is ideal for product changeovers on a packaging line, letting you shift the retract stop by up to 50 mm without adding external stopper blocks. The PT tapered port threads (G3/8) and the SUS304 rod material make it a drop-in fit for washdown environments.
Because the 750 mm stroke is long, the 25 mm rod and M20x1.5 thread will experience amplified side-loading if the load is unsupported. An external guide rail is strongly recommended to prevent binding over this extended travel. This SAIJ configuration uses the reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It deliberately omits FB, CA, CB, and CR mounts found on fixed-stroke variants.
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 SAIJ80BX750-50S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 3518 N.
The rear adjuster screw lets you shorten the 750 mm nominal stroke by up to 50 mm, creating a 700-750 mm usable travel window. The adjuster is a mechanical stop that sets the end position; it does not hold the load without live air pressure.
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