Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 195mm 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
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40
The AirTAC SAIJ125X195-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 155-195 mm window without adding external stops. It delivers a robust 6136 N pull force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This 125 mm bore model uses a PT tapered G1/2 port and a 32 mm carbon steel rod with an M27x2 thread, providing a strong interface that handles high side loads. The rear adjuster acts purely as a travel stop for end-position tuning, so it does not hold the load without live air pressure. For load-holding without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 195 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 SAIJ125X195-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×195 | 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 SAIJ125X195-40 Is Used
Product Changeover
Dial in the 155-195 mm travel window during line changeovers to accommodate varying product lengths without swapping the cylinder.
Commissioning Calibration
Use the rear stopper to fine-tune the exact end position during initial machine setup, ensuring perfect alignment before full production.
Heavy Assembly Press
Leverage the 6136 N pull force to seat heavy components, relying on the adjustable stop to prevent over-travel during the pressing cycle.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40 the Right Cylinder?
Choose this adjustable-stroke cylinder when your application requires exact end-position calibration during commissioning or frequent product-size changeovers, rather than relying on a fixed-stroke SAI model. If your force requirements are lower, stepping down to an 80 mm bore yields 2268 N of pull force at 0.5 MPa, which may be a more efficient choice. Because the stroke is under 300 mm, the 32 mm rod handles the load without requiring an external guide.
To match this ISO 15552 interchangeable cylinder, specify a 125 mm bore, 195 mm stroke, 40 mm adjustment range, PT port thread, and your preferred mounting option from the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Note that this standard configuration omits the magnet, so it will not work with AirTAC CMSE or DMSE sensors.
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 SAIJ125X195-40 FAQ
The rear adjuster screw lets you shorten the nominal 195 mm stroke by up to 40 mm, providing a usable travel window of 155 to 195 mm. It acts as a mechanical stop to set the end position and does not lock the load.
At 0.5 MPa operating pressure, it provides 6136 N of pull force and 8590 N of push force. It can deliver a maximum push force of 11045 N at 0.9 MPa.
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