Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-100S
The AirTAC SAIJ125X600-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a SUS420J2 stainless steel rod (option A) and a built-in magnet for CMSE and DMSE sensors. With a nominal 600 mm stroke and a 100 mm adjustment range, you can dial back the effective travel to anywhere within a 500-600 mm window during commissioning without adding external stops.
Belonging to the 125 mm bore class, this actuator generates 6136 N of pull force at 0.5 MPa and 8590 N of push force at 0.7 MPa. It uses PT tapered port threads (G1/2) and operates at speeds of 30-500 mm/s. The rear adjuster acts purely as a travel stop for end-position tuning; it does not hold the load without live air, so a SAIL or BSAI variant is required for pneumatic locking.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAIJ125AX600-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SAIJ125AX600-100S Is Used
Variable End-Stop Positioning
Dial in precise retract distances between 500 and 600 mm during machine commissioning to accommodate varying product lengths without swapping cylinders.
Production Line Changeover
Quickly adjust the stroke stopper when switching a manufacturing line to a new product size, reducing downtime and eliminating the need for external mechanical stops.
Heavy Assembly Setup
Leverage the 8590 N push force at 0.7 MPa to move heavy jigs into place, while using the rear screw to fine-tune the final clamping position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-100S the Right Cylinder?
Select this 125 mm bore model when an application requires heavy thrust combined with variable end-positioning. If 8590 N of push at 0.7 MPa is excessive, stepping down to a 100 mm bore yields 5497 N; if more force is needed, a 160 mm bore provides 14074 N. Choose the SAIJ adjustable-stroke format over a fixed SAI cylinder when you need on-the-fly product-size changeovers or fine end-position tuning at machine setup.
Because this 600 mm stroke exceeds 300 mm, the 32 mm diameter rod and M27x2 thread will not prevent side-loading damage on long unsupported loads—an external guide carriage is mandatory. This configuration uses a PT port thread and includes the -S magnet for electronic DMSE or reed CMSE switches. It supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ125AX600-100S FAQ
At 0.5 MPa it 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 screw allows you to shorten the effective travel from the 600 mm nominal stroke by up to 100 mm, creating a usable 500-600 mm window. It functions as a mechanical stop and does not lock the load pneumatically.
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