Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S
The AirTAC SAIJ80X50-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513 N push force at 0.5 MPa, featuring a 25 mm carbon rod upgraded to SUS420J2 stainless steel (code A) for superior corrosion resistance. The integrated magnet (-S) enables precise position detection.
This model provides a nominal 50 mm stroke that can be dialed back by up to 40 mm, creating a highly versatile 10-50 mm usable travel window. The extruded aluminum barrel includes sensor grooves on both sides, and fluid supply routes through PT G3/8 tapered ports. The rear stopper screw allows mechanics to fine-tune the retract end position during commissioning without adding external stops.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80AX50-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAIJ80AX50-40S Is Used
Product Changeovers
Dial in the exact 10-50 mm retract position instantly when switching between product sizes on a packaging line, avoiding mechanical rebuilds.
End-Stop Tuning
Fine-tune the final resting position during machine commissioning using the rear adjuster, ensuring perfect alignment without adding external hard stops.
High-Force Clamping
Leverage the 2513 N push force at 0.5 MPa to secure heavy workpieces, relying on the SUS420J2 stainless rod for durability in harsh environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S the Right Cylinder?
Choose this 80 mm bore when an application demands higher thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but still requires a compact overall footprint. The adjustable 10-50 mm travel window is ideal for product-size changeovers on a line, allowing operators to set exact end positions on the fly instead of physically swapping cylinders. For load-holding without live air pressure, note that the rear adjuster functions strictly as a travel stop and not a lock; you would need an external pilot-operated check valve or a related SAIL lock cylinder for that capability.
To match this exact ISO 15552 replacement, specify: 80 mm bore, 50 mm stroke, 40 mm adjustment range, PT G3/8 ports, SUS420J2 rod material, and the -S magnet option. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is under 300 mm, side-load stress on the rod thread is minimal, though external guides are always recommended for heavy lateral loads.
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 SAIJ80AX50-40S FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach a maximum push force of 4523 N at 0.7 MPa.
The rear adjuster acts as a mechanical stop that allows you to shorten the 50 mm nominal stroke by up to 40 mm. This creates a usable travel window of 10-50 mm, enabling precise end-position tuning without changing the cylinder itself.
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