Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20
The AirTAC SAIJ80X800-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 800 mm travel by up to 20 mm, creating a precise 780-800 mm usable window. It delivers 3518 N of push force at 0.7 MPa and 4523 N at 0.9 MPa. The piston rod is SUS420J2 stainless steel, and the fluid supply connects via PT tapered G3/8 ports.
Because the stroke is 800 mm, the M20x1.5 rod thread and 25 mm rod diameter need careful alignment to prevent excessive side loading. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU lacks a magnet for CMSE or DMSE switches. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80AX800-20 Is Used
Variable End-Stop Tuning
Dial in the exact 780 to 800 mm retract position during machine commissioning without installing external physical stops.
Product Size Changeover
Quickly adapt a long-stroke conveyor pusher to handle different package lengths by adjusting the rear screw on the fly.
Long-Stroke Assembly Press
Use the 4523 N output at 0.9 MPa to drive long-travel seating operations, fine-tuning the final end position to the millimeter.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20 the Right Cylinder?
Choose this 80 mm bore if the 50 mm class (1374 N push at 0.5 MPa) is too weak but you want to avoid stepping up to the 100 mm class (3927 N at 0.5 MPa). The adjustable stroke is ideal for machine changeovers, letting you fine-tune the retract end-position without swapping the cylinder or adding external stops. Remember that the rear adjuster is a travel stop, not a lock; it will not hold the load without live air. For position holding, consider an external rod lock or the SAIL series. To replace an ISO 15552 cylinder, match the 80 mm bore, 800 mm stroke, 20 mm adjustment, PT G3/8 ports, and the desired mounting. For a stroke this long, always use an external guide to support the load.
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 SAIJ80AX800-20 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 20 mm from the 800 mm nominal length, giving a usable travel window of 780 to 800 mm for precise end-position tuning at commissioning.
It provides 3518 N of push force and 2268 N of pull force at 0.7 MPa, and up to 4523 N of push force at 0.9 MPa.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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