Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-40S
The AirTAC SAIJ80X125-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of pull force at 0.5 MPa and features a carbon steel piston rod with an M20x1.5 thread. The integrated -S magnet enables position monitoring via AirTAC CMSE reed or DMSE electronic sensors housed in the dual-side barrel grooves.
With a 125mm nominal stroke and a 40mm adjustment range, this SKU provides an 85-125mm usable travel window. This built-in stopper lets you fine-tune the retract end position during commissioning or product changeovers without swapping the cylinder or adding external stops. The adjuster acts purely as a travel limiter combined with variable air cushions at both ends; it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80X125-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SAIJ80X125-40S Is Used
End-Position Tuning
Dial in the exact retract distance within the 85-125mm window during machine commissioning to perfect pick-and-place movements without mechanical shims.
Product Changeover
Quickly adapt the stroke limit on packaging lines when switching to different package lengths, using the rear screw to set the new stop position.
Variable End Stops
Provide a precise mechanical stop for varying material thicknesses in pressing or indexing stations without installing multiple fixed cylinders.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-40S the Right Cylinder?
Choose this 80mm bore if your application requires thrust between the 1402N pull of a 63mm cylinder and the 2268N pull of a 100mm bore. The adjustable 85-125mm travel window is optimal for machines requiring variable end-stops for different product sizes, unlike a fixed-stroke SAI cylinder. For holding loads safely without continuous air pressure, select the SAIL or BSAI series instead, as this cylinder relies on live air. This configuration uses PT tapered ports and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ80X125-40S FAQ
A rear external screw allows you to shorten the effective stroke by up to 40mm, creating an 85-125mm usable travel window. It acts as a mechanical stop to fine-tune the end position and does not function as a lock to hold the load without air pressure.
At 0.5 MPa, it provides 2513N of push force and 2268N of pull force, operating at speeds between 30 and 800 mm/s. It uses G3/8 ports and an M20x1.5 rod thread.
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