Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-20 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 SAIJ125AX110-20
The AirTAC SAIJ125X110-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 90 to 110 mm, allowing you to trim the 110 mm nominal stroke by up to 20 mm during commissioning. Delivering 6136 N of push force at 0.5 MPa, it handles heavy loads with precision.
This variant features a SUS420J2 stainless steel rod and PT tapered port threads. The extruded aluminum barrel includes dual sensor grooves, though this specific SKU omits the magnet, meaning electronic DMSE or reed CMSE switches cannot be used without modification. The rear adjuster acts purely as a mechanical stop to fine-tune the end position and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-20 |
|---|---|
| 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 SAIJ125AX110-20
| 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 SAIJ125AX110-20 Is Used
Machine Setup Tuning
Dial in the exact 90 to 110 mm end-position during initial commissioning without adding external stopper blocks to your fixture.
Product Changeover
Quickly adapt the stroke length on a packaging line when handling slightly different carton sizes on the fly.
Heavy Press Positioning
Leverage the 6136 N push force at 0.5 MPa to move heavy jigs while using the adjuster to prevent hard mechanical crashes.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-20 the Right Cylinder?
Choose this 125 mm bore when you need substantial thrust—stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927 N. The adjustable stroke is ideal for product changeovers where the exact end-of-stroke position varies slightly, eliminating the need to swap out a fixed-stroke SAI cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the 110 mm stroke is relatively short, side-load stress is minimal, but the 32 mm rod and M27x2 thread still handle high torque well. Remember that the rear adjuster only sets the travel end; for load-holding without continuous air pressure, consider an external rod lock or the AirTAC SAIL pneumatic lock series. The operating speed is 30-500 mm/s.
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 SAIJ125AX110-20 FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 1251 kgf.
The rear adjuster screw lets you shorten the 110 mm nominal stroke by up to 20 mm, creating a 90 to 110 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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