Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10
The AirTAC SAIJ125X800-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 790-800mm usable travel window. Delivering 6136N of push force at 0.5MPa, it is built to handle heavy loads with a 32mm SUS420J2 stainless steel rod. The extruded aluminum barrel includes sensor grooves on both sides.
This model uses PT tapered port threads and omits the FB, CA, CB, and CR mounting options, utilizing a reduced set of ISO 15552 mounts (Basic, FA, LB, TC, FTC, TCM1, TCM2). The rear stopper allows precise end-position tuning during commissioning without adding external stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×800 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX800-10 Is Used
Long-Stroke Press Tuning
Dial in the exact bottom position of an 800mm press cycle within a 790-800mm window to accommodate material thickness variations.
Heavy Material Diversion
Actuate large diverters on a conveyor line, using the 6136N thrust to push heavy pallets while fine-tuning the extended stop.
Machine Changeover Setup
Quickly adjust the retract end-position by up to 10mm during product size changeovers without swapping out the entire cylinder.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10 the Right Cylinder?
Choose this 125mm bore when an 80mm bore lacks thrust, as it jumps from 2513N to 6136N push force at 0.5MPa. The 10mm adjustment range is ideal for fine-tuning a long 800mm travel end position during machine setup. For strokes of 800mm, an external guide is required to prevent excessive side-loading on the rod.
To match this ISO 15552 interchangeable cylinder, confirm the 125mm bore, 800mm stroke, PT ports, and required mounting accessory. Note that the rear adjuster is a travel stop, not a lock; for load-holding without live air, select an AirTAC SAIL or BSAI cylinder.
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 SAIJ125 Adjustable Cylinder SAIJ125AX800-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster acts as a stopper that trims the effective travel, creating a 790-800mm usable stroke window. It allows end-position tuning at commissioning but does not lock the load without live air pressure.
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