Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30 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 SAIJ125AX195-30
The AirTAC SAIJ125X195-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 195 mm nominal stroke by up to 30 mm for a usable travel window of 165-195 mm. This built-in mechanical stop allows precise end-position tuning at commissioning without swapping out the physical cylinder or adding external stops. It delivers a robust 6136 N push force at 0.5 MPa, scaling up to 8590 N at 0.7 MPa, making it well-suited for heavy-duty positioning tasks.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed and DMSE electronic solid-state switches. The SAIJ series supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30 |
|---|---|
| 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 SAIJ125AX195-30
| 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 SAIJ125AX195-30 Is Used
Product Changeover
Quickly modify the effective stroke from 165 to 195 mm during format changes on packaging lines without replacing the cylinder.
Heavy Assembly Press
Leverage the 6136 N push force at 0.5 MPa to seat heavy components, using the rear stop to dial in the exact contact position.
End-Stop Tuning
Fine-tune the retract end-position during machine commissioning to avoid adding external mechanical stops or shims.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30 the Right Cylinder?
Select this 125 mm bore when an application demands high thrust—6136 N push and 5734 N pull at 0.5 MPa—that a 100 mm bore (3927 N push) cannot provide, without stepping up to the massive 160 mm size (10053 N push). The adjustable stroke is ideal for product-size changeovers on a line, letting operators fine-tune the retract end-stop quickly. To match this ISO 15552 interchangeable cylinder, specify the 125 mm bore, 195 mm stroke, 30 mm adjustment, PT ports, and the desired mounting style.
Because the nominal stroke is 195 mm, side-load risks are moderate, but any long unsupported load should still use an external guide to protect the 32 mm rod and M27x2 thread. Note that the rear adjuster acts purely as a travel stop to set deceleration; it does not hold the load without live air. For true position holding without pressure, consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL and BSAI clamp-lock series.
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 SAIJ125AX195-30 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 0.7 MPa, the push force increases to 8590 N.
The rear adjuster acts as a mechanical stop that lets you trim the 195 mm nominal stroke back by up to 30 mm, creating a 165-195 mm usable travel window. It sets the travel end and deceleration but does not lock or hold the load without live air pressure.
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