Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-100S
The AirTAC SAIJ125X150-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136N pull force at 0.5 MPa. Because of the 100mm adjustment code, the usable travel window spans from 50 to 150mm, letting you dial in the exact retract position without swapping out the barrel. The extruded aluminum housing includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches for precise end-of-stroke detection.
This 125mm bore unit uses a PT tapered G1/2 port and a 32mm carbon steel rod with an M27x2 thread. The rear adjuster functions purely as a mechanical stop to set the travel end and relies on the variable air cushions for deceleration; it does not lock or hold the load without live air pressure. For applications requiring true load-holding, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAIJ125X150-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SAIJ125X150-100S Is Used
Machine Changeover
Fine-tune the retract distance on the fly when switching product sizes on a packaging line, using the 50-150mm window to adapt stops without changing cylinders.
Variable End-Stop Positioning
Dial in the exact end-of-stroke position during machine commissioning to perfect a pressing or clamping operation, absorbing impact via the adjustable air cushions.
Heavy-Duty Assembly
Leverage the 6136N pull force to handle substantial workpiece loads, adjusting the travel end to accommodate different jig heights on the assembly floor.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-100S the Right Cylinder?
Choose this adjustable model over a fixed-stroke SAI when you need frequent machine changeovers or fine end-position tuning during commissioning without adding external stops. If your process requires less force, stepping down to a 100mm bore yields 3681N of pull force at 0.5 MPa, whereas moving up to a 160mm bore provides 9425N. To replace this ISO 15552 cylinder, match the 125mm bore, 150mm stroke, 100mm adjustment, PT G1/2 port, and -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the stroke is under 300mm, side-load concerns are minimal, but long unsupported loads still need an external guide.
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 SAIJ125X150-100S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 8590N of push force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that shortens the nominal 150mm stroke. With a 100mm adjustment range, you can set the effective travel anywhere within a 50 to 150mm window, but it only sets the end position and does not hold the load without air pressure.
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