Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 65mm 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
- Stroke65 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-50S
The AirTAC SAIJ80X65-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 25mm piston rod and a usable travel window of 15-65mm, allowing you to dial back the 65mm nominal stroke by up to 50mm during machine commissioning. It delivers 2268N of pull force at 0.5MPa, making it suitable for moderate to heavy actuation.
This SKU is built with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. 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. The rear adjuster acts purely as a travel stop for end-position tuning and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 65 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 SAIJ80AX65-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×65 | 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 SAIJ80AX65-50S Is Used
Adjustable End-Stops
Fine-tune the 15-65mm travel window on packaging equipment to accommodate different carton sizes without mechanical rebuilds.
Machine Commissioning
Dial in the exact retract position during setup, using the 50mm adjustment to compensate for mechanical tolerances on the fly.
Product Changeover
Rapidly switch end-of-stroke positions on a production line for new product variants, leveraging the 2513N push force for consistent actuation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-50S the Right Cylinder?
Choose this 80mm bore when a 50mm bore (825N pull at 0.5MPa) lacks the necessary force but a 100mm bore is physically oversized. The 50mm adjustment range is ideal for product-size changeovers, letting you fine-tune the end position without swapping the cylinder or adding external stops. For fixed travel without a rear adjuster, the standard SAI cylinder is the alternative.
When replacing an ISO 15552 cylinder, match the 80mm bore, 65mm stroke, 50mm adjustment, PT G3/8 port, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the nominal stroke is under 300mm, side-load guides are less critical, but the 25mm rod handles standard loads well. If your application requires holding the load without live air, use an SAIL or BSAI cylinder instead of relying on the rear stopper.
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 SAIJ80AX65-50S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It can reach up to 4523N push at 0.9MPa.
The rear adjuster screw lets you shorten the 65mm nominal stroke by up to 50mm, creating a usable travel window of 15-65mm. This stopper only sets the end position and does not hold the load without continuous air pressure.
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