Airtac SAIJ80 Adjustable Cylinder SAIJ80BX20-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX20-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 20mm 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
- Stroke20 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 SAIJ80BX20-20
The AirTAC SAIJ80X20-20 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 0-20 mm usable travel window, allowing you to dial back the 20 mm nominal stroke to fine-tune the retract end position during commissioning.
This configuration includes a SUS304 stainless steel rod for superior corrosion resistance and PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides for CMSE / DMSE switches. The rear adjuster acts purely as a mechanical stop to set the travel end; it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX20-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX20-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 20 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 SAIJ80BX20-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×20 | 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 SAIJ80BX20-20 Is Used
Machine Changeover
Dial in the exact retract position within a 0-20 mm window when switching product sizes on a line, avoiding the need to bolt on external stops.
Commissioning Fine-Tuning
Trim back the 20 mm stroke by up to 20 mm to perfect the end-of-travel position during setup, compensating for mechanical tolerance stack-up.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX20-20 the Right Cylinder?
Choose this 80 mm bore when your application requires 2268 N pull force at 0.5 MPa, stepping up from a 63 mm bore (1402 N pull) for heavier actuation. The 0-20 mm adjustable window is selected over a fixed-stroke SAI when you need variable end-stops for product changeovers without swapping cylinders. Because the stroke is 20 mm, side-load risks are minimal, though an external guide is recommended for lateral loads.
For ISO 15552 replacement matching, ensure the bore is 80 mm, stroke is 20 mm, adjustment is 20 mm, port is PT G3/8, and the rod material is SUS304 stainless steel. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. If your machine requires true load-holding without live air, use an SAIL or BSAI cylinder instead of relying on this 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 SAIJ80BX20-20 FAQ
At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 20 mm nominal stroke anywhere within a 0-20 mm usable window. It sets the travel end but does not lock the load without live air pressure.
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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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