Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50 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 SAIJ80AX225-50
The AirTAC SAIJ80X225-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 175 to 225 mm, allowing you to dial in the exact retract end-position during commissioning without adding external stops. Operating at 0.7 MPa, it delivers a push force of 3518 N and a pull force of 2268 N, making it well-suited for medium-to-heavy actuation tasks.
This variant is configured with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads mating to its G3/8 air supply. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept electronic DMSE or reed CMSE switches if position feedback is added later. The rear adjuster acts purely as a mechanical travel stop; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50 |
|---|---|
| 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 SAIJ80AX225-50
| 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 SAIJ80AX225-50 Is Used
Machine Changeover
Quickly reconfigure the retract distance for different product dimensions on a packaging line using the 50 mm adjustment range, eliminating the need to physically swap cylinders.
End-Position Tuning
Dial in the exact 175 to 225 mm travel window during setup to absorb mechanical tolerance stack-up and achieve precise final positioning without external shims.
Variable End Stops
Adjust the stroke dynamically on heavy-duty material handling equipment where the retract stop point must be altered for different operational modes or tooling widths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-50 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 1374 N push at 0.5 MPa) is insufficient, but a 100 mm bore (providing 5497 N at 0.7 MPa) would be excessive. The 50 mm adjustment range is ideal for machines processing varying product sizes, letting operators fine-tune the retract distance on the fly rather than swapping out a fixed-stroke SAI cylinder. Because the stroke is 225 mm, ensure adequate external guiding to prevent side-load damage to the front rod bearing.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 225 mm stroke, 50 mm adjustment, G3/8 PT ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This plain version lacks a magnet, so it cannot host CMSE or DMSE sensors without a -S upgrade. If your application requires true load-holding without continuous air pressure, the SAIJ adjuster will not suffice; consider the SAIL lock or BSAI clamp-lock series instead.
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 SAIJ80AX225-50 FAQ
At an operating pressure of 0.7 MPa, this 80 mm bore cylinder generates a push force of 3518 N and a pull force of 2268 N. It can reach a maximum push force of 4523 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 225 mm down to as little as 175 mm. This creates a 175-225 mm adjustable window for fine-tuning the end position at commissioning, but it does not lock the load without live air pressure.
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