Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-75 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 SAIJ80BX750-75
The AirTAC SAIJ80X750-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, engineered to provide 2513N of push force at 0.5MPa. By turning the integrated rear stopper screw, technicians can dial back the 750mm nominal stroke by up to 75mm, creating a precise 675-750mm usable travel window for exact end-position tuning during commissioning. This cylinder uses a PT tapered port thread and a SUS304 stainless steel rod, offering superior corrosion resistance for demanding environments.
The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. It is important to note that the rear adjuster functions strictly as a travel stop and deceleration aid alongside the variable air cushions; it does not hold the load in the absence of live air pressure. For applications requiring true load-holding without continuous air supply, a related AirTAC series like SAIL or BSAI is recommended.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-75 |
|---|---|
| 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 SAIJ80BX750-75
| 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 SAIJ80BX750-75 Is Used
Machine Setup Changeover
Fine-tune the 675-750mm travel window during product line changeovers, adjusting the rear stopper screw to set exact end positions without replacing the entire cylinder.
Variable End-Stop Positioning
Ideal for diverter gates or push-off mechanisms on conveyors where the full 750mm stroke needs to be mechanically dialed back by up to 75mm to accommodate varying package sizes.
Corrosion-Resistant Actuation
The SUS304 stainless steel rod makes this 2513N thrust cylinder suitable for manufacturing environments where moisture or wash-downs would degrade standard carbon steel rods.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-75 the Right Cylinder?
Selecting this 80mm bore provides a robust 2513N push and 2268N pull at 0.5MPa, making it a significant step up from the 63mm bore's 1559N push force. The adjustable stroke is specifically chosen when a machine requires variable end-stops or frequent product-size changeovers, allowing you to fine-tune the travel window without swapping the cylinder or bolting on external stops. To match this ISO 15552 replacement cylinder exactly, specify: 80mm bore, 750mm stroke, 75mm adjustment, PT port thread, and no magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because this model features a long 750mm stroke, the 25mm rod and M20x1.5 rod thread will still carry more side load than smaller bores, but an external guide rail is strongly recommended to prevent rod bending under heavy lateral forces.
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 SAIJ80BX750-75 FAQ
The rear of the cylinder features an external adjusting screw that acts as a mechanical stopper. It allows you to shorten the effective 750mm stroke by up to 75mm, providing a usable travel window of 675-750mm for precise end-position tuning during commissioning.
At a standard 0.5 MPa operating pressure, this 80mm bore double-acting cylinder generates a push force of 2513N and a pull force of 2268N. It can deliver up to 4523N of push force at 0.9 MPa.
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