Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-100S
The AirTAC SAIJ125X100-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. Because the 100mm nominal stroke is paired with a 100mm adjustment range, the usable travel window spans from 0 to 100mm, allowing you to set the exact retract end-position anywhere within the entire stroke length. This extreme adjustability is ideal for prototyping or highly variable product lines.
This SKU features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and includes a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. It utilizes PT tapered ports (G1/2) and operates at speeds of 30-500mm/s. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAIJ125AX100-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SAIJ125AX100-100S Is Used
Variable Retract Positioning
Dial in the exact retract distance from 0 to 100mm during setup, perfect for machines that process multiple part lengths on the same fixture.
High-Force Changeover
Leverage 6136N of thrust at 0.5MPa while adjusting the end-stop on the fly for new product sizes without disassembling the pneumatic rig.
Corrosion-Resistant Actuation
The SUS420J2 stainless steel rod withstands humid or mildly corrosive environments while providing precise stroke tuning for testing equipment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-100S the Right Cylinder?
Choose this 125mm bore when your application requires high force in the 6000N range but demands extreme flexibility for the retract end-stop; stepping down to a 100mm bore yields 3927N at 0.5MPa, while a 160mm bore provides 10053N. The 0-100mm adjustable window lets you fine-tune the retract position during commissioning or product changeover without swapping the cylinder or adding external stops. For holding loads without live air pressure, note that the rear adjuster acts only as a travel stop, so you should consider an SAIL air-released lock, a BSAI clamp-lock, or an external rod lock.
To replace this cylinder with an ISO 15552 interchangeable unit, match the 125mm bore, 100mm stroke, 100mm adjustment range, PT G1/2 port, and the -S magnet requirement. Although the stroke is under 300mm, the 32mm rod diameter and M27x2 rod thread provide excellent rigidity, but heavy off-center loads should still be guided externally to prevent binding.
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 SAIJ125AX100-100S FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.7 MPa the push force increases to 8590N.
The nominal stroke is 100mm with a 100mm adjustment range, meaning the effective travel can be fine-tuned to any length from 0 to 100mm via the rear adjuster.
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