Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-30S
The AirTAC SAIJ80X350-30-S is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stopper that allows you to fine-tune the effective travel. With a nominal 350 mm stroke and a 30 mm adjustment range, you gain a usable travel window of 320-350 mm to perfectly dial in end positions during commissioning without adding external stops. It delivers 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa, making it robust for heavy actuation.
This variant includes a -S magnet for position sensing with CMSE reed or DMSE electronic switches, and uses a SUS420J2 stainless steel rod (code A) for superior corrosion resistance. The extruded aluminum barrel provides sensor grooves on both sides, and the PT G3/8 port ensures high flow. Because the 350 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the 25 mm rod.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80AX350-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SAIJ80AX350-30S Is Used
Variable End-Stop Positioning
Dial in the 320-350 mm travel window during machine setup to accommodate different material lengths without physically swapping out the entire actuator assembly.
Product Size Changeover
Quickly reconfigure the reject or pusher stroke on a packaging line by turning the rear adjuster, ensuring precise placement for varying carton dimensions.
Heavy-Duty Clamping
Leverage the 4523 N push force at 0.9 MPa to secure heavy workpieces, using the 30 mm stroke adjustment to control the exact clamping depth and prevent material damage.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-30S the Right Cylinder?
Choose this 80 mm bore when 50 mm (982 N push at 0.5 MPa) is too weak but 100 mm (3927 N) is oversized. An adjustable stroke is preferred over a fixed SAI cylinder when machinery processes varying product sizes, allowing operators to change the end-stop on the fly. The rear adjuster acts only as a travel stop and the air cushions manage deceleration; neither will hold a load without live air pressure. For fail-safe load holding, select the SAIL or BSAI series instead.
To replace an ISO 15552 cylinder, match the 80 mm bore, 350 mm stroke, 30 mm adjustment, PT G3/8 port, and -S magnet. The SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The M20x1.5 rod thread and 36 mm cushion provide stable mechanical interfaces for your tooling.
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 SAIJ80AX350-30S FAQ
At 0.5 MPa it provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf (5022 N) of push force.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective stroke back by up to 30 mm from the 350 mm nominal length, creating a 320-350 mm usable travel window. It only sets the end position; it does not lock or hold the load without continuous air pressure.
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