Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50S
The AirTAC SAIJ80X225-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 175-225 mm usable travel window. Delivering 3518 N of push force at 0.7 MPa, it handles robust actuation while allowing you to dial in the exact retract end-position during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This variant uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and ships with a -S magnet for CMSE and DMSE sensors. It features PT tapered port threads (G3/8) and a 25 mm rod with an M20x1.5 thread, providing a robust interface for moderate side loads. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 225 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 SAIJ80AX225-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 SAIJ80AX225-50S Is Used
Product Changeover
Dial in the retract stop by up to 50 mm when switching between part lengths on a machining line, avoiding physical cylinder swaps.
Commissioning Calibration
Fine-tune the end-position during setup to hit a target datum precisely, using the rear screw to trim the 225 mm stroke back to 175 mm.
Variable End Stops
Adjust the travel window dynamically for sorting or diverting operations where the required actuation distance varies by package size.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50S the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 1374 N at 0.5 MPa) lacks the thrust for your process, but a 100 mm bore (5497 N at 0.7 MPa) is oversized. The 50 mm adjustment range is ideal for machines requiring frequent product-size changeovers, eliminating the need to swap cylinders or add external stops. For load-holding without continuous air pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 225 mm nominal stroke, 50 mm adjustment code, PT G3/8 ports, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 225 mm stroke is relatively long, ensure an external guide supports the rod to prevent excessive side-loading and premature seal wear.
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 SAIJ80AX225-50S FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder provides 3518 N of push force and 2268 N of pull force. At 0.5 MPa, it yields 2513 N push and 2268 N pull.
The rear adjuster screw lets you shorten the effective stroke by up to 50 mm, creating a 175-225 mm travel window. It acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
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