Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX85-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm 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
- Stroke85 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 SAIJ80BX85-50S
The AirTAC SAIJ80X85-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 85 mm travel by up to 50 mm. This creates a highly flexible 35-85 mm usable window, letting you fine-tune the retract end-position at commissioning without swapping the barrel or adding external stops. It provides robust thrust, pushing 2513 N and pulling 2268 N at 0.5 MPa.
This SKU is built with a SUS304 stainless steel rod for superior corrosion resistance and ships with a magnet for position sensing. You can pair it directly with AirTAC CMSE reed or DMSE electronic solid-state switches mounted into the dual-side sensor grooves on the extruded aluminum barrel. The pneumatic supply connects via PT tapered G3/8 ports, and the unit omits the FB, CA, CB, and CR mounting formats, supporting only Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAIJ80BX85-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80BX85-50S Is Used
Machine Setup & Changeover
Leverage the 35-85 mm adjustable travel window to rapidly reconfigure end-stops during machine setup or product changeovers, eliminating the downtime required to physically swap cylinders.
Variable Package Diverter
Ideal for diverter arms on packaging lines where box sizes vary.
End-Position Tuning
Use the rear adjusting screw to fine-tune the retract end-position during commissioning, dialing in the exact 35 mm retracted length needed for precise tooling alignment.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-50S the Right Cylinder?
The 50 mm adjustment range is ideal for product-size changeovers on a line, giving you a 35-85 mm travel window to accommodate varying package dimensions without machining new hard stops. Because the nominal stroke is under 300 mm, side-load stress is manageable, though the M20x1.5 rod thread still handles higher off-center loads well.
Remember that the rear adjuster acts purely as a mechanical stop to set deceleration, not as a lock. A plain SAIJ cannot hold a load or maintain position without live air pressure. If your workflow demands fail-safe load holding on air loss, step over to the SAIL pneumatic lock series, the BSAI clamp-lock, or install an external pilot-operated check valve. This model is dimensionally interchangeable per ISO 15552, matching standard mounting footprints while adding the external 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 SAIJ80BX85-50S FAQ
The rear adjusting screw acts as an external stopper that lets you shorten the 85 mm nominal stroke by up to 50 mm, providing a usable travel window of 35 to 85 mm. It sets the travel end and deceleration point but does not lock the load without live air pressure.
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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