Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX40-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 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 SAIJ80BX40-20S
The AirTAC SAIJ80X40-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 20 to 40 mm, allowing you to dial back the nominal 40 mm stroke by up to 20 mm during commissioning without adding external stops.
This specific SKU is built for demanding environments with a SUS304 stainless steel rod (option B) and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet supports position detection via AirTAC CMSE reed or DMSE solid-state switches. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80BX40-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80BX40-20S Is Used
Product Changeover Dials
Quickly reconfigure the end-stop distance from 20 to 40 mm on packaging lines when switching to different container sizes.
Clamp Position Tuning
Fine-tune the exact retraction point of a 2513 N clamping mechanism at commissioning without swapping out the entire actuator.
Stainless Rod Forming
Leverage the SUS304 rod for light forming operations in washdown or corrosive environments where carbon steel rods would degrade.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-20S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial force but demands precise end-position tuning at setup. The adjustable rear stopper is ideal for product changeovers, but note it acts only as a travel stop; it does not hold the load without live air. For true fail-safe load holding, consider an SAIL pneumatic lock or BSAI clamp-lock cylinder.
To match this ISO 15552 interchangeable cylinder, specify an 80 mm bore, 40 mm nominal stroke, 20 mm adjustment range, PT ports, and a -S magnet. The 25 mm rod and M20x1.5 thread handle high side loads well, but even with a short 40 mm stroke, always guide the load externally to prevent binding.
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 SAIJ80BX40-20S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from 40 mm down to 20 mm. This allows precise end-position tuning at commissioning without external stops.
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.
Fast Dispatch
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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