Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-50
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-50 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 SAIJ125X195-50
The AirTAC SAIJ125X195-50 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 145-195 mm window. Delivering 6136 N of push force at 0.5 MPa, it is built with a carbon steel rod and a PT tapered port thread. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This adjustable design eliminates the need to swap cylinders or bolt on external stops during product changeovers. The rear adjuster acts purely as a mechanical stop to set the end position, meaning it does not hold the load without live air pressure. For secure load-holding without continuous compressed air, consider the SAIL or BSAI variants.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-50 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-50 |
|---|---|
| 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 SAIJ125X195-50
| 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 SAIJ125X195-50 Is Used
End-Position Tuning
Dial in the exact retract distance within the 145-195 mm window during machine commissioning to perfect product spacing without hardware changes.
Line Changeover
Quickly adapt the stroke stop for different product sizes on a packaging line, reducing downtime between production runs.
High-Force Forming
Leverage the 6136 N push force at 0.5 MPa for pressing or forming tasks that require precise, adjustable travel limits.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-50 the Right Cylinder?
Select this 125 mm bore when your application requires high thrust—stepping down to a 100 mm bore drops the push force to 3927 N at 0.5 MPa, while moving up to a 160 mm bore yields 10053 N. The 50 mm adjustment range is ideal for dialing in exact end positions at commissioning without replacing the entire cylinder. Because the stroke is 195 mm, side loads are moderate, but long unsupported strokes generally require an external guide to prevent rod binding.
To match this ISO 15552 replacement exactly, specify a 125 mm bore, 195 mm stroke, 50 mm adjustment, PT port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted from this adjustable series. The standard configuration uses carbon steel rod material and no sensor magnet.
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 SAIJ125X195-50 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 can deliver up to 1251 kgf.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the nominal 195 mm stroke by up to 50 mm, creating a usable travel window of 145-195 mm. It only sets the end position and does not lock the load without live air pressure.
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