Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40
The 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. 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.
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