Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 500mm 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
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-50
The AirTAC SAIJ80X500-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 450 to 500 mm window. Delivering a robust 4523 N of push force at 0.9 MPa, it is built to handle demanding automation tasks while remaining dimensionally interchangeable with ISO 15552 cylinders such as those from Festo or SMC.
This specific configuration utilizes a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic sensors if a magnet is added later, without needing extra brackets.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80BX500-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SAIJ80BX500-50 Is Used
Product Diversion
Adjusts the retract stop on a conveyor diverter arm by up to 50 mm to accurately route different package sizes without changing hardware.
Machine Setup Changeover
Enables rapid fine-tuning of the 500 mm stroke end-position during format changeovers, reducing downtime on automated assembly lines.
Long-Reach Pressing
Provides 4523 N of pressing force at 0.9 MPa with a SUS304 rod, easily tuned to accommodate material thickness variations in long-reach press stations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-50 the Right Cylinder?
Selecting this 80 mm bore over a 63 mm variant (which provides 2805 N push at 0.9 MPa) gives you significantly higher thrust for moving heavier payloads, while stepping up to a 100 mm bore would yield 7068 N if you need maximum power. The 50 mm adjustment range is ideal for product-size changeovers on a line, letting you dial in the exact end position at commissioning without swapping out the cylinder or adding external stops. Because the 500 mm stroke is substantial, an external guide is recommended to prevent excessive side-loading on the 25 mm rod.
When matching an ISO 15552 replacement, verify the 500 mm stroke, 50 mm adjuster, PT G3/8 port, and your required mounting style from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2 (note that FB, CA, CB, and CR mounts are omitted from this series). Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80BX500-50 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 500 mm nominal stroke by up to 50 mm. This creates a usable travel window of 450 to 500 mm, which is set during commissioning and acts as a travel stop, not a load lock.
At an operating pressure of 0.9 MPa, the SAIJ80X500-50 delivers 4523 N of push force and 4071 N of pull force. It operates at speeds between 30 and 800 mm/s.
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