Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX425-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 425mm 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
- Stroke425 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 SAIJ80BX425-50S
The AirTAC SAIJ80X425-50-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. Because this is an adjustable-stroke variant, its 425mm nominal travel can be dialed back by up to 50mm, giving you a precise 375-425mm usable window for commissioning without external stops.
This specific SKU is built with a SUS304 stainless steel rod (option B) for corrosion resistance and includes a magnet (-S) for position sensing. It supports AirTAC CMSE reed and DMSE electronic sensors fitted into the dual-side extruded barrel grooves. The rear adjuster acts purely as a travel stop to fine-tune end positions; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 425 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 SAIJ80BX425-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×425 | 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 SAIJ80BX425-50S Is Used
Machine Setup Tuning
Dial in the exact 375-425mm end position during commissioning to perfectly time machine cycles without adding external physical stops.
Product Changeover
Quickly adjust the stroke length up to 50mm to accommodate varying product sizes on the same production line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX425-50S the Right Cylinder?
The adjustable 375-425mm travel window is ideal for product changeovers or fine-tuning end-of-stroke positions on a machine without swapping out the entire cylinder for a fixed-stroke SAI model.
When matching this ISO 15552 cylinder for a replacement, verify the 425mm stroke, 50mm adjustment range, PT G3/8 port, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 425mm, the extended rod is subject to bending under side loads; always use an external guide to prevent binding. For applications requiring true load-holding without live air, select a SAIL or BSAI cylinder instead, as the rear adjuster here is a stop, not a lock.
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 SAIJ80BX425-50S FAQ
The rear adjusting screw allows you to shorten the effective stroke by up to 50mm, creating a usable travel window between 375mm and 425mm. This lets you fine-tune the retract end position at commissioning without changing the cylinder.
It operates at speeds between 30 and 800 mm/s.
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Standard models are processed and dispatched in 3-5 business days.
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