Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-100 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 SAIJ80X125-100
The AirTAC SAIJ80X125-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 125 mm stroke that can be dialed back by up to 100 mm, creating a wide 25-125 mm usable travel window for highly flexible positioning. Delivering 2513 N of push force at 0.5 MPa, it handles substantial loads while allowing precise end-position tuning during commissioning.
This extruded aluminum profile cylinder includes sensor grooves on both sides for CMSE or DMSE switches, though this specific SKU omits the magnet. It features a robust 25 mm carbon steel rod with an M20x1.5 thread, paired with PT tapered porting and a G3/8 air connection. The rear stopper mechanism decelerates the piston alongside the standard adjustable air cushions, but it acts strictly as a travel stop and does not hold the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-100 |
|---|---|
| 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 SAIJ80X125-100
| 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 SAIJ80X125-100 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance anywhere from 25 to 125 mm during machine setup, perfect for accommodating different material thicknesses on the fly.
Product Changeover Systems
Rapidly redefine the stroke end position for new product sizes without physically removing the cylinder from the production line.
Heavy-Duty Clamping
Leverage the 2513 N push force at 0.5 MPa to secure heavy workpieces, using the fine adjustment to prevent over-travel and crushing.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-100 the Right Cylinder?
Choose this 80 mm bore when your application requires the 2513 N push force (at 0.5 MPa) rather than the 1559 N offered by a 63 mm cylinder, but without stepping up to the larger 100 mm size. The massive 100 mm adjustment range is ideal for machines processing varying product sizes, allowing you to redefine the retract end-stop on the fly without swapping cylinders or adding external stops. For an exact ISO 15552 replacement match, verify the 125 mm stroke, 100 mm adjuster, PT port thread, and your required mounting style.
Mounting options for the SAIJ series include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR styles. Because the 25 mm rod carries high side-load capacity, it handles robust dynamics well, though any stroke approaching or exceeding 300 mm would still require an external guide. If your process demands true load-holding without live air pressure, a plain SAIJ adjuster will not suffice; you should explore the SAIL air-released lock or BSAI clamp-lock cylinders 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 SAIJ80X125-100 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 a maximum 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke from its 125 mm nominal length down to as little as 25 mm. This stop only sets the travel end-point and does not lock the load without continuous air pressure.
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