Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10S
The AirTAC SAIJ125X145-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force and 5734N of pull force at 0.5 MPa, making it suited for heavy-duty positioning. The integrated magnet allows for direct position sensing using CMSE reed or DMSE electronic solid-state switches.
This specific SKU provides a 145mm nominal stroke that can be fine-tuned down by up to 10mm, creating a precise 135-145mm usable travel window. The carbon steel rod and M27x2 rod thread provide a robust interface for high side-load endurance, while the extruded aluminum barrel maintains standard ISO 15552 mounting dimensions without relying on external tie-rods.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 145 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 SAIJ125X145-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×145 | 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 SAIJ125X145-10S Is Used
Heavy-Duty Press Fit
Dial in the exact 135-145mm insertion depth for large bearings during automated assembly, compensating for material variances without changing the cylinder.
Product Changeover
Quickly adjust the rear stopper by up to 10mm to accommodate a slightly shorter workpiece size on a high-force production line.
End-Stop Calibration
Fine-tune the retract end-position during machine setup to prevent mechanical crashes, utilizing the heavy 6136N thrust capacity for robust actuation.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10S the Right Cylinder?
Choose this 125mm bore when a 100mm bore (offering 3927N push at 0.5 MPa) lacks the thrust for your load, but a 160mm bore is physically too large. The adjustable 135-145mm travel window is ideal for applications requiring exact end-position tuning during commissioning or product changeover, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
Because the stroke is 145mm, an external guide is recommended to prevent excessive side-loading on the M27x2 rod thread. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series. This model features PT tapered ports and supports SAIJ mounting options including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ125X145-10S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke back by up to 10mm, providing a usable travel window of 135-145mm. It only decelerates and sets the travel end; it does not lock or hold the load without continuous air pressure.
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