Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-30S
The AirTAC SAIJ80X40-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 10 to 40 mm, letting you dial in the exact retract position during commissioning without adding external stops. The bore delivers 2513 N of push force at 0.5 MPa, making it suitable for medium to heavy-duty positioning tasks.
This variant includes a magnet for CMSE reed and DMSE electronic sensors, enabling precise end-of-stroke detection. It uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on other variants.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80AX40-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80AX40-30S Is Used
Machine Changeover
Dial in the exact retract position within the 10-40 mm window when switching product sizes on a packaging line, avoiding physical cylinder swaps.
End-Stop Tuning
Fine-tune the final deceleration point during commissioning using the rear adjuster, ensuring precise mechanical positioning without external stops.
Assembly Clamping
Leverage the 2513 N push force at 0.5 MPa to secure heavy workpieces, using the adjustable travel to accommodate varying part thicknesses.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-30S the Right Cylinder?
Choose this 80 mm bore when an application requires more thrust than the 63 mm bore (which provides 1559 N at 0.5 MPa) but does not need the heavier 100 mm class. The adjustable stroke is ideal for machine changeovers where the retract end-stop varies slightly by product size, replacing the need to swap a fixed-stroke SAI cylinder. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. To match this ISO 15552 replacement, specify bore 80, stroke 40, 30 mm adjustment, PT port, and the -S magnet.
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 SAIJ80AX40-30S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm. This creates a usable travel window of 10 to 40 mm, enabling precise end-position tuning without changing the cylinder.
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