Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX375-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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
- Stroke375 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 SAIJ80BX375-20S
The AirTAC SAIJ80X375-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 375 mm travel back by up to 20 mm, yielding a precise 355-375 mm usable end-position window. The -S suffix indicates an integrated magnet for position sensing via CMSE reed or DMSE solid-state switches.
This SKU is explicitly configured with a SUS304 stainless steel rod (option B) for superior corrosion resistance and a PT tapered port thread. Because the 375 mm stroke is relatively long, the 25 mm rod diameter and M20x1.5 rod thread provide robust rigidity, though an external guide is strongly recommended to manage side loads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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 SAIJ80BX375-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×375 | 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 SAIJ80BX375-20S Is Used
Variable End-Stop Tuning
Dial in the exact 355-375 mm retract position during machine commissioning to accommodate different material thicknesses without adding external stopper blocks.
Product Size Changeover
Quickly adjust the effective stroke on packaging conveyors to handle varying carton lengths, utilizing the integrated magnet for DMSE sensor feedback.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX375-20S the Right Cylinder?
An adjustable-stroke cylinder is chosen over a fixed SAI when a machine requires variable end-stops for product changeovers or fine-tuning during commissioning without physically swapping the cylinder. To replicate this ISO 15552 interchangeable unit, specify: 80 mm bore, 375 mm stroke, 20 mm adjustment, PT port, SUS304 rod, and a magnet for CMSE/DMSE sensors.
Since the 375 mm stroke exceeds 300 mm, the unsupported piston rod is prone to bending under lateral loads; always use an external linear guide to prevent premature seal wear. Remember that the rear adjuster acts strictly as a travel stop and the air cushions only decelerate the end of motion—neither will hold the load if air pressure is removed. For true load-holding without live air, consider an AirTAC SAIL or BSAI cylinder 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 SAIJ80BX375-20S FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjusting screw allows you to shorten the nominal 375 mm stroke by up to 20 mm, creating a 355-375 mm usable travel window. This stopper fine-tunes the end position at commissioning but does not lock the load without live air pressure.
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