Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 125mm 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.
- BoreØ100 mm
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75
The AirTAC SAIJ100X125-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that creates a 50-125 mm usable travel window from its 125 mm nominal stroke. Delivering 7068 N of push force at 0.9 MPa, it handles heavy positioning tasks. This configuration includes a SUS420J2 stainless steel rod (option A) and PT tapered ports.
The integrated rear stopper screw allows precise end-position tuning during commissioning without adding external stops. It supports AirTAC CMSE reed and DMSE electronic sensors via dual side grooves. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100AX125-75 Is Used
Product Changeover
Dial in the 50-125 mm travel window to accommodate varying product lengths on the same line without changing the cylinder.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact positioning without external stopper blocks.
Heavy Payload Handling
Leverage the 7068 N push force at 0.9 MPa to move heavy assemblies while adjusting the stroke to clear obstructions.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75 the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore (1402 N pull at 0.5 MPa) lacks the force for heavy payloads, or step down if a 50 mm bore (825 N pull at 0.5 MPa) suffices. The 75 mm adjustment range is ideal for product-size changeovers, letting you fine-tune the retract end without swapping cylinders. For exact ISO 15552 replacement, match the 100 mm bore, 125 mm stroke, 75 mm adjust, PT ports, and SUS420J2 rod. Since the stroke is under 300 mm, side-load risks are minimal, but external guides are still recommended for heavy lateral loads. The rear adjuster acts only as a travel stop, not a lock; for load-holding without live air, use an 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 SAIJ100 Adjustable Cylinder SAIJ100AX125-75 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective stroke anywhere within a 50-125 mm window from the 125 mm nominal length without replacing the cylinder.
At 0.9 MPa operating pressure, this 100 mm bore double-acting cylinder provides 7068 N of push force and 5497 N of pull force.
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Standard models usually ship in 3-4 days.
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