Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10 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 SAIJ125X145-10
The AirTAC SAIJ125X145-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 135 to 145 mm, allowing you to dial back the extend position by up to 10 mm during commissioning without adding external stops. In the 125 mm bore class, it delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa operating pressure.
This extruded aluminum barrel integrates sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. The 32 mm carbon steel rod and M27x2 rod thread provide high structural rigidity, while the 40 mm air cushions at both ends manage deceleration. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10 |
|---|---|
| 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 SAIJ125X145-10
| 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 SAIJ125X145-10 Is Used
Press Fit Tuning
Dial in the exact 135 to 145 mm insertion depth for heavy press-fit assemblies without physically remounting the cylinder.
Product Changeover
Quickly adjust the end-stop by up to 10 mm on a packaging line when switching to a slightly shorter product format.
Heavy Material Handling
Utilize the 6136 N push force to move dense pallets or heavy workpieces, fine-tuning the travel limit on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-10 the Right Cylinder?
Select this 125 mm bore unit when your application requires heavy thrust in the 6000 N range but demands exact end-position tuning; if you need less force, stepping down to a 100 mm bore yields 3927 N at 0.5 MPa. The 10 mm adjustment range is ideal for fine-tuning a 145 mm extend distance during machine setup or product changeover, replacing the need to swap out a fixed-stroke SAI cylinder. To match this ISO 15552 footprint, specify a 145 mm stroke, 10 mm adjuster, PT tapered port threads, and your required mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the stroke is under 300 mm, side-load stress is minimal, though an external guide is still recommended for heavy lateral loads. For load-holding without live air, use an SAIL or BSAI cylinder instead, as the adjuster here is only a stop.
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 SAIJ125X145-10 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 1251 kgf of thrust.
The rear adjuster screw acts as an external stop that lets you shorten the 145 mm nominal stroke by up to 10 mm, creating a 135 to 145 mm travel window. It only sets the end position and does not lock or hold the load without continuous air pressure.
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