Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30
The AirTAC SAIJ80X50-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 50mm stroke by up to 30mm. This creates a highly versatile 20-50mm usable travel window, enabling precise end-position tuning at commissioning without swapping the cylinder or adding external stops. Built with a durable SUS304 stainless steel rod, it delivers a robust 4523N of push force at 0.9 MPa.
The integrated rear screw acts purely as a travel stop to set the retract position, not as a lock, meaning the cylinder cannot hold a load without live air pressure. It features PT tapered ports and utilizes variable air cushions at both ends to decelerate the motion smoothly. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80BX50-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAIJ80BX50-30 Is Used
Machine Changeover
Quickly fine-tune the retract end-position during product size transitions on a packaging line without physically replacing the actuator.
Variable End-Stop Setup
Dial in the exact 20-50mm travel window required for delicate pressing or locating tasks during initial machine commissioning.
Clamping Force Tuning
Adjust the effective stroke to regulate the clamping reach on varying workpiece sizes, relying on the 25mm rod to handle high side loads.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30 the Right Cylinder?
Choose this 80mm bore when your application requires significantly more thrust than the 63mm bore provides (2182N push at 0.7 MPa), delivering a substantial 3518N push at 0.7 MPa. The adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product-size changeovers, offering far more flexibility than a fixed-stroke SAI cylinder. Because the standard SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, you can easily integrate it into existing ISO 15552 footprints. For applications requiring true load-holding without live air pressure, consider the SAIL or BSAI series instead.
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 SAIJ80BX50-30 FAQ
The rear adjuster screw allows you to shorten the effective travel by up to 30mm, creating a usable stroke window of 20-50mm. The adjuster acts as a physical stop for the retract end-position and works with the air cushions to decelerate the load.
At 0.7 MPa operating pressure, it provides 3518N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 4523N.
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