Airtac SAIJ125 Adjustable Cylinder SAIJ125X140-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X140-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X140-10
The AirTAC SAIJ125X140-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 6136N of push force at 0.5 MPa and provides a usable travel window of 130 to 140mm, letting you trim the nominal stroke by up to 10mm during commissioning.
This extruded aluminum barrel uses a PT tapered port thread and a 32mm carbon steel rod. The rear screw acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X140-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X140-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 140 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 SAIJ125X140-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×140 | 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 SAIJ125X140-10 Is Used
Precision Press Fit
Dial in the exact 130 to 140mm insertion depth during press assembly to accommodate material tolerances without reprogramming the motion controller.
Machine Changeover
Quickly adjust the rear stop by up to 10mm when switching a production line to a new product size, avoiding the need to swap out the entire cylinder.
Heavy End-Stopping
Leverage the 6136N push force at 0.5 MPa to reliably move heavy jigs into their final retracted position while fine-tuning the exact endpoint.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X140-10 the Right Cylinder?
Choose this 125mm bore when you need significantly more thrust than the 80mm bore offers, which provides 2513N of push force at 0.5 MPa. The 10mm adjustment window is ideal for fine-tuning machine setups and product changeovers without adding external stops. Because the 140mm stroke is under 300mm, side-load stress is minimal, but always verify the 32mm rod thread handles your application's lateral forces.
To match this ISO 15552 interchangeable cylinder, confirm the 125mm bore, 140mm stroke, 10mm adjustment, PT port thread, and standard carbon steel rod without a magnet. Mounting options include 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 SAIJ125X140-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa pressure, it achieves a push force of 12272N.
The rear adjuster screw lets you shorten the effective travel from the nominal 140mm down to 130mm. This mechanical stop fine-tunes the retracted end position but requires live air to maintain the load.
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