Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 650mm 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
- Stroke650 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30S
The AirTAC SAIJ80X650-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 4523N of push force at 0.9 MPa, utilizing a 25mm piston rod and G3/8 PT ports. By turning the rear adjustment screw, you can fine-tune the effective travel down by up to 30mm, creating a highly versatile 620-650mm usable stroke window for precise machine setup.
This specific SKU features an SUS420J2 stainless steel rod (material code A) for improved corrosion resistance over standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and because this model carries the -S magnet designation, it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for exact end-position detection. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets to streamline your setup choices.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 650 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 SAIJ80AX650-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×650 | 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 SAIJ80AX650-30S Is Used
Variable End-Stop Tuning
Dial in the exact 620 to 650mm travel distance during machine commissioning to perfectly seat parts without machining custom external spacers.
Product Changeover
Quickly shorten the retract stroke by up to 30mm when switching to a new product size on the line, keeping downtime to an absolute minimum.
High-Force Positioning
Leverage the 4523N push force at 0.9MPa to move heavy jigs into place while using the rear screw to guarantee a precise final stopping coordinate.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30S the Right Cylinder?
Choose this 80mm bore adjustable cylinder when your application requires 4523N of push force at 0.9MPa, or dial the pressure down to 0.5MPa for 2513N. If your process needs less force, stepping down to a 63mm bore yields 2805N at 0.9MPa. The primary advantage of selecting an SAIJ over a fixed-stroke SAI is the ability to dial in the exact end-position at commissioning or during product changeover without swapping the cylinder or adding external stops. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding, consider an AirTAC SAIL or BSAI cylinder.
Because this cylinder features a long 650mm stroke, the 25mm rod and M20x1.5 thread will experience increased side-loading forces during extension. Even with the larger rod diameter providing excellent structural support, you should incorporate an external guide rail to prevent binding and ensure smooth linear motion across the extended travel distance.
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 SAIJ80AX650-30S FAQ
At an operating pressure of 0.9 MPa, this 80mm bore cylinder generates 4523N of push force and 4071N of pull force. At the maximum pressure of 1.0 MPa, it provides up to 513 kgf of push force.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 650mm stroke by up to 30mm, providing a usable travel window of 620-650mm. This stopper only sets the end position and does not lock the load without live air pressure.
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