Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75S
The AirTAC SAIJ80X550-75-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 4523N of push force at 0.9 MPa and provides a usable travel window of 475 to 550 mm, letting you shorten the effective stroke by up to 75 mm. This built-in adjustability allows for precise end-position tuning at commissioning without swapping the barrel or bolting on external stops. Equipped with a SUS304 stainless steel rod and a PT tapered port, it is built for demanding industrial environments.
This model includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed switches and DMSE electronic solid-state sensors housed in the dual-side extruded barrel grooves. The rear adjuster acts purely as a mechanical travel stop to fine-tune the retract end, meaning it does not hold the load without live air pressure. For load-holding requirements without continuous air, you should look to the SAIL or BSAI series. The SAIJ mounting set omits FB, CA, CB, and CR brackets, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 550 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 SAIJ80BX550-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SAIJ80BX550-75S Is Used
Machine Setup Calibration
Dial in the exact retract position during machine commissioning by trimming up to 75mm off the 550mm stroke, ensuring precise alignment without external stopper hardware.
Product Changeover
Quickly adapt automated lines for different product sizes by adjusting the rear stopper to shift the 475-550mm travel window as needed for new formats.
Material Handling
Accommodate varying package dimensions on a conveyor by fine-tuning the cylinder's extended end position, preventing damage to goods during push-off operations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75S the Right Cylinder?
Choose this 80mm bore cylinder when an application requires substantial thrust—such as the 2513N push force at 0.5 MPa—combined with variable end-stops for product changeovers. If your setup needs less force, stepping down to a 63mm bore provides 1559N at 0.5 MPa, while moving up to a 100mm bore yields 3927N at 0.5 MPa. The adjustable stroke is ideal for machines that require fine-tuning the retract position during commissioning rather than relying on a fixed-stroke SAI cylinder.
Because this model features a 550mm stroke, the 25mm rod diameter and M20x1.5 rod thread provide excellent rigidity, but an external guide is recommended to handle side loads over this long unsupported travel. To match this ISO 15552 replacement exactly, specify an 80mm bore, 550mm stroke, 75mm adjustment, PT ports, and the -S magnet option. Speed ranges from 30-800 mm/s, and the variable air cushions at both ends help decelerate the load smoothly.
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 SAIJ80BX550-75S FAQ
At 0.9 MPa, this 80mm bore cylinder provides a push force of 4523N and a pull force of 2268N. At 0.5 MPa, it delivers 2513N of push force.
A rear-mounted adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke from its 550mm nominal length down to a minimum of 475mm. This stopper only sets the travel end and does not lock the load without live air pressure.
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