Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 950mm 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
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-30S
The AirTAC SAIJ80X950-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 30 mm. This creates a usable stroke window between 920 and 950 mm, enabling precise end-position tuning at commissioning without swapping out the cylinder or adding external stops. In the 80 mm bore class, it delivers 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa.
This unit includes a SUS420J2 stainless steel rod for improved corrosion resistance and a magnet for position sensing using AirTAC CMSE reed or DMSE electronic switches. It uses PT tapered port threads (G3/8) and relies on a 25 mm rod with an M20x1.5 thread, which handles side loads well, though a 950 mm stroke still requires an external guide to prevent rod deflection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 950 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 SAIJ80AX950-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×950 | 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 SAIJ80AX950-30S Is Used
Machine Changeover
Dial in the 920-950 mm travel window during product size changes without swapping hardware.
Variable End Stops
Set precise retract positions for diverter arms or gating mechanisms on long transfer lines.
Long-Stroke Press Feed
Feeds heavy blanks into a press using 2513 N of force at 0.5 MPa with fine-tuned final positioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-30S the Right Cylinder?
Choose this 80 mm bore cylinder when an application requires high thrust combined with variable end-stops for product changeovers. If you need less force, stepping down to a 63 mm bore yields 1559 N of push force at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for machine setups where the exact travel limit needs fine-tuning on the fly, unlike a fixed-stroke SAI cylinder.
For an exact ISO 15552 replacement, match the 80 mm bore, 950 mm stroke, 30 mm adjustment, PT G3/8 port, and -S magnet. Because the stroke is 950 mm, you must use an external guide to support the load and prevent excessive side-loading on the rod. Remember that the rear adjuster acts only as a travel stop and the air cushions handle deceleration; neither will hold the load without live air pressure. For true load-holding without air, use an SAIL or BSAI cylinder.
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 SAIJ80AX950-30S FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw lets you shorten the 950 mm nominal stroke by up to 30 mm, giving an effective travel range of 920 to 950 mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
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