Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX145-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm 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
- Stroke145 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 SAIJ80AX145-50S
The AirTAC SAIJ80X145-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 50 mm of travel reduction. This yields a usable stroke window of 95-145 mm, enabling precise end-position tuning during commissioning without adding external stops.
This variant includes a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and utilizes a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports AirTAC CMSE reed and DMSE electronic solid-state switches for exact position feedback. The rear adjuster acts strictly as a travel stop for deceleration, not a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 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 SAIJ80AX145-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SAIJ80AX145-50S Is Used
Machine Changeover
Dial in the 95-145 mm travel window during product size transitions without swapping out the entire cylinder or reengineering fixed external stops.
End-Position Tuning
Fine-tune the retract end position at commissioning to absorb mechanical tolerances, ensuring precise seating of heavy 80 mm bore actuators.
Variable End Stops
Adjust the rear stopper screw to alter the effective stroke length on the fly for flexible clamping or pressing operations on the factory floor.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-50S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires a nominal 145 mm stroke that must be dialed back by up to 50 mm to accommodate varying product sizes on a changeover line. If the setup needs less force, stepping down to a 63 mm bore provides 1559 N at 0.5 MPa; if more thrust is required, moving up to a 100 mm bore yields 3927 N. Because the stroke is under 300 mm, side-load stress on the M20x1.5 rod thread is moderate, though external guides are recommended for heavy off-axis loads.
For an exact ISO 15552 replacement match, ensure the new cylinder matches the 80 mm bore, 145 mm stroke, 50 mm adjustment range, PT port thread, and the -S magnet requirement. Remember that a plain SAIJ cylinder does not hold its load without live air pressure. For true fail-safe load holding without continuous air, consider an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder 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 SAIJ80AX145-50S FAQ
The rear adjuster acts as an external mechanical stop that can shorten the nominal 145 mm stroke by up to 50 mm, providing a usable travel window of 95-145 mm. It sets the travel end and works with the air cushion for deceleration, but it does not lock or hold the load without live air pressure.
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf of push force.
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Genuine AirTAC parts produced by AirTAC factory.
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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