Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75 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 SAIJ125AX195-75
The AirTAC SAIJ125X195-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 120 to 195 mm, allowing you to dial back the nominal 195 mm stroke by up to 75 mm during commissioning. Delivering a robust 6136 N pull force at 0.5 MPa, it handles heavy loads with ease.
This unit is configured with a SUS420J2 stainless steel rod (option A) for superior wear resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, compatible with CMSE reed and DMSE electronic switches when a magnet is specified. It supports speeds of 30-500 mm/s and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75 |
|---|---|
| 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 SAIJ125AX195-75
| 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 SAIJ125AX195-75 Is Used
Machine Changeover
Quickly fine-tune the retract end position by up to 75 mm when switching product sizes on a packaging line, eliminating the need for external mechanical stops.
Process Commissioning
Dial in the exact 120 to 195 mm travel window during initial setup to perfect timing sequences without machining new mounting plates.
Heavy Load Positioning
Leverage the 6136 N pull force to shift heavy pallets or fixtures, using the rear adjuster to accommodate varying package dimensions.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75 the Right Cylinder?
Select this 125 mm bore when an application requires substantial force, such as the 6136 N pull at 0.5 MPa, but demands on-the-fly end-position tuning without swapping cylinders. If you need less force, stepping down to an 80 mm bore yields 2268 N pull, whereas moving up to a 160 mm bore provides 9425 N pull. The adjustable stroke is ideal for product changeovers, letting you set variable end stops precisely.
For an ISO 15552 replacement, match the 125 mm bore, 195 mm stroke, 75 mm adjustment, PT ports, and the desired mounting. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an external rod lock or the AirTAC SAIL or BSAI series. Given the 195 mm stroke is under 300 mm, side-load concerns are minimal, but always guide long unsupported loads.
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 SAIJ125AX195-75 FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 N of pull force and 8590 N of push force. At the maximum rated pressure of 1.0 MPa, it can deliver up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 195 mm nominal stroke down to as little as 120 mm. This allows precise end-position tuning at commissioning without replacing the cylinder, though it does not lock the load without live air pressure.
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