Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-75S 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 SAIJ125X195-75S
The AirTAC SAIJ125X195-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force at 0.5 MPa and provides a usable travel window of 120-195mm, allowing you to dial back the nominal 195mm stroke by up to 75mm during machine setup or product changeover.
This unit includes a magnet for position sensing with CMSE reed or DMSE solid-state switches. It features a robust 32mm carbon steel rod and PT tapered ports. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-75S |
|---|---|
| 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 SAIJ125X195-75S
| 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 SAIJ125X195-75S Is Used
Variable End Stops
Dial in the exact retract position within the 120-195mm window during line commissioning to accommodate different material thicknesses without external stopper blocks.
Product Changeover
Quickly adjust the effective stroke by up to 75mm when switching between product sizes on a packaging line, minimizing mechanical downtime.
Heavy Forming Setup
Leverage the 6136N push force for pressing operations while using the rear screw to fine-tune the tooling approach distance safely.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-75S the Right Cylinder?
Choose this adjustable-stroke model when you need fine end-position tuning at commissioning without swapping the cylinder or adding external stops. If your application requires less force, stepping down to a 100mm bore yields 3927N at 0.5 MPa; if you need more holding power, a 160mm bore provides 10053N. For load-holding without live pressure, consider an SAIL or BSAI cylinder instead of relying on the SAIJ adjuster.
When replacing an ISO 15552 actuator, match the 125mm bore, 195mm stroke, 75mm adjustment range, PT port threads, and the -S magnet requirement. Mounting options include the reduced SAIJ set of 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 SAIJ125X195-75S FAQ
The rear adjuster screw lets you shorten the effective travel from the nominal 195mm down to a minimum of 120mm, providing a 75mm tuning window. It functions as a mechanical stop for end-position tuning and does not lock the load without continuous air pressure.
At 0.5 MPa, it provides 6136N of push force and 5734N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 11045N.
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