Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-20 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 SAIJ80AX950-20
The AirTAC SAIJ80X950-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a robust 2513N push force at 0.5 MPa, stepping up to 3518N at 0.7 MPa, making it suitable for heavy-duty positioning tasks. The integrated rear adjusting screw allows you to shorten the effective travel, creating a 930-950mm usable stroke window for precise end-position tuning during commissioning.
This 80mm bore unit incorporates a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear stopper and variable air cushions manage end-of-stroke deceleration, neither component locks the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-20 |
|---|---|
| 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 SAIJ80AX950-20
| 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 SAIJ80AX950-20 Is Used
Variable End-Stop Tuning
Fine-tune the retraction end position by up to 20mm during machine setup to perfectly align heavy workpieces without disassembling the actuator.
Product Size Changeover
Quickly adapt a long-stroke transfer line to handle different package lengths by dialing back the stroke window from 950mm to 930mm.
Heavy-Duty Positioning
Leverage the 2513N push force at 0.5 MPa to push heavy pallets or molds into a processing station with precise, adjustable stopping depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX950-20 the Right Cylinder?
Choose this 80mm bore model when your application requires substantial thrust that a 63mm bore (1559N push at 0.5 MPa) cannot provide, but a 100mm bore (3927N) would be excessive. The 20mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-stop without swapping the cylinder or adding external mechanical stops. For any load-holding requirements without continuous air pressure, consider the SAIL or BSAI series instead, as this adjuster acts only as a travel stop.
Because the 950mm stroke is substantial, the 25mm piston rod and M20x1.5 rod thread provide necessary rigidity, but an external guide is strongly recommended to prevent excessive side-loading on the unsupported span. This SAIJ variant supports the reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552 standards.
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 SAIJ80AX950-20 FAQ
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke. For this model, you can trim the nominal 950mm stroke back by up to 20mm, giving a usable travel window of 930-950mm for precise end-position tuning.
At 0.5 MPa operating pressure, the SAIJ80X950-20 provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
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