Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-50
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-50
The AirTAC SAIJ125X110-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 60 to 110 mm, allowing you to dial back the nominal 110 mm stroke by up to 50 mm during commissioning. Delivering 6136 N of push force at 0.5 MPa, it is built for heavy-duty positioning tasks.
This model uses a robust 32 mm carbon steel rod with an M27x2 thread, paired with 40 mm adjustable air cushions at both ends to manage high kinetic energy. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. It supports a focused set of ISO 15552 mounting interfaces: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-50 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 SAIJ125X110-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×110 | 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 SAIJ125X110-50 Is Used
Heavy Press Fine-Tuning
Dial in the exact 60-110 mm end position during machine commissioning to accommodate material thickness variations without machining new stopper blocks.
Product Changeover Stops
Adjust the retract stroke on the fly when switching between product sizes on a packaging line, utilizing the 50 mm adjustment range to hit new home positions.
Large Fixture Positioning
Leverage the 6136 N push force to move heavy jigs into place while relying on the rear screw to set precise mechanical endpoints for the fixture.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-50 the Right Cylinder?
Choose this 125 mm bore when you need substantial thrust—6136 N push and 5734 N pull at 0.5 MPa—combined with on-the-fly end-position tuning without swapping cylinders or adding external stopper blocks. If your application requires less force, stepping down to an 80 mm bore yields 2513 N push, whereas moving up to a 160 mm bore provides 10053 N. The PT tapered port thread and 30-500 mm/s speed range suit large-frame machinery.
For strokes of 110 mm, side-load risks are moderate, but always guide the load externally if pushing off-center. Remember that the rear adjuster is a travel stop, not a locking device; this SAIJ will not hold its position without live air pressure. For true fail-safe load holding, select an AirTAC SAIL or BSAI series cylinder 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 SAIJ125 Adjustable Cylinder SAIJ125X110-50 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder produces 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 110 mm down to 60 mm. This provides a 60-110 mm usable stroke window for fine-tuning end positions at commissioning without replacing the cylinder.
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