Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 425mm 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
- Stroke425 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30S
The AirTAC SAIJ80X425-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 2513N push force and a 2268N pull force at 0.5 MPa, utilizing a 25mm rod and G3/8 PT tapered ports. Because this SKU carries the -30 adjustment code, you can fine-tune the effective travel window down from a 425mm nominal stroke to anywhere between 395 and 425mm. This built-in mechanical stop allows you to dial in the exact retract end-position during commissioning without swapping out the cylinder or adding external stops.
This unit includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the dual-side sensor grooves on the extruded aluminum barrel. The piston rod is constructed from SUS420J2 stainless steel (code A) for improved corrosion resistance compared to standard carbon steel. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting the FB, CA, CB, and CR brackets. Because the stroke exceeds 300mm, the 25mm rod diameter will still need an external guide to prevent excessive side-loading on long unsupported extensions.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 425 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 SAIJ80AX425-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×425 | 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 SAIJ80AX425-30S Is Used
Machine Changeover
Dial in the retract position up to 30mm during product size changes without disassembling the cylinder mount or bolting on external stop blocks.
End-Stop Tuning
Fine-tune the 425mm stroke to an exact 395mm retraction point during commissioning to perfect a gripping or pressing operation.
Extended Travel Assembly
Leverage the 80mm bore's 2513N thrust at 0.5MPa for long-stroke actuation tasks, guided externally to manage side loads over the 425mm travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30S the Right Cylinder?
Choose this 80mm bore when a 50mm bore (offering 982N push at 0.5MPa) is too weak, but a 100mm bore (offering 3927N push) would be physically oversized and waste compressed air. The adjustable stroke is ideal for product changeovers on a packaging line, letting you shift the retract stop by up to 30mm rather than physically replacing a fixed-stroke SAI cylinder. When matching an ISO 15552 replacement, verify the 425mm stroke, 30mm adjuster, G3/8 PT ports, and the required mounting bracket. The rear adjuster acts only as a travel stop and works alongside the adjustable air cushions to decelerate the load; it does not hold the load without live air pressure. For true load-holding without continuous air, consider the SAIL pneumatic lock or BSAI clamp-lock variants instead.
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 SAIJ80AX425-30S FAQ
A rear external stopper screw lets you mechanically shorten the 425mm nominal stroke by up to 30mm, creating a usable travel window of 395-425mm. This allows precise end-position tuning at commissioning without replacing the cylinder.
At 0.5 MPa operating pressure, it provides a push force of 2513N and a pull force of 2268N. At 0.7 MPa, the push force increases to 3518N.
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