Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-100S
The AirTAC SAIJ125X180-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 80 to 180 mm, allowing you to dial back the nominal 180 mm stroke by up to 100 mm during machine setup. Delivering 6136 N of push force at 0.5 MPa, it handles heavy-duty positioning tasks with precision.
This model includes a standard carbon steel rod and a -S magnet for position sensing. The extruded aluminum barrel integrates sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic solid-state switches. Unlike fixed-stroke SAI units, this version lets you fine-tune end positions at commissioning without swapping the entire cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 180 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 SAIJ125X180-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×180 | 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 SAIJ125X180-100S Is Used
Machine Changeover
Rapidly reconfigure retract depths for different product sizes on a packaging line without disassembling the actuator.
Heavy Pressing
Apply up to 6136 N of force at 0.5 MPa for clamping or pressing assemblies, with fine end-position tuning.
Variable End Stops
Set precise mechanical stops for multi-position tooling setups where fixed cylinders fall short.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-100S the Right Cylinder?
Choose this 125 mm bore when your application requires substantial thrust—stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, while this 125 mm unit provides 6136 N. The massive 100 mm adjustment range is ideal for product-size changeovers on a line, letting you set new retract stops mechanically. To replace an ISO 15552 cylinder, match the 125 mm bore, 180 mm stroke, PT tapered port threads, and the -S magnet option.
The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets. Note that the rear adjuster acts purely as a travel stop and does not lock the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. Since the 180 mm stroke is under 300 mm, side-load risks are moderate, but the 32 mm rod and M27x2 thread still handle lateral stresses better than smaller bores.
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 SAIJ125X180-100S FAQ
The rear adjuster screw lets you shorten the effective travel from the nominal 180 mm down to 80 mm, providing a 100 mm tuning window. It acts as a mechanical stop to set the retract end position and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. The maximum thrust is 1251 kgf at 1.0 MPa.
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