Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX350-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-50
The AirTAC SAIJ80X350-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 300 to 350 mm, allowing you to dial back the nominal 350 mm stroke by up to 50 mm during commissioning.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides. Note that the rear adjuster acts purely as a mechanical stop for end-position tuning; it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 350 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SAIJ80BX350-50 Is Used
Machine Changeover
Dial in the exact retract distance within the 300-350 mm window during product size transitions without swapping the cylinder.
End-Position Tuning
Use the rear stopper screw to fine-tune the final end-of-stroke position at commissioning, absorbing mechanical tolerances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX350-50 the Right Cylinder?
Choose this 80 mm bore when you need substantial thrust, such as the 2513 N pull force at 0.5 MPa, but want the flexibility to fine-tune the retract position on the fly without adding external stops. If your application requires less force, stepping down to a 63 mm bore yields 1402 N of pull force at 0.5 MPa. For higher force needs, a 100 mm bore provides 3681 N of pull force at 0.5 MPa.
Because the 350 mm stroke is relatively long, the 25 mm rod diameter should be paired with an external guide to manage side loads and prevent rod bending. This SAIJ model uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For exact ISO 15552 replacement matching, verify the 80 mm bore, 350 mm stroke, 50 mm adjustment, G3/8 PT ports, and the specific mounting accessory. If true load-holding is required without live air, consider the SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ80BX350-50 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm, creating a usable travel window of 300 to 350 mm. It acts as a mechanical stop to fine-tune the end position and does not lock the load without live air pressure.
At 0.9 MPa, the push force increases to 4523 N.
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