Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-75S 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 SAIJ125AX600-75S
The AirTAC SAIJ125X600-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force and 5734N of pull force at 0.5 MPa, providing robust actuation for heavy industrial loads. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors housed within the dual-side extruded aluminum barrel grooves.
This specific SKU features a 600 mm nominal stroke that can be fine-tuned backward by up to 75 mm, yielding a usable travel window of 525-600 mm. The SUS420J2 stainless steel rod (code A) offers enhanced corrosion resistance compared to standard carbon steel. Because the adjuster functions strictly as a mechanical stop to set the retract end position, it cannot hold a load without continuous live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-75S |
|---|---|
| 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 SAIJ125AX600-75S
| 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 SAIJ125AX600-75S Is Used
Product Size Changeovers
Dial in the 525-600 mm travel window during production line format changes to accommodate varying package dimensions instantly.
Heavy Press Positioning
Leverage the 6136N thrust at 0.5 MPa to position heavy materials accurately while using the rear stop to fine-tune the final end point.
Automated Assembly Stops
Use the external adjuster to set precise retract distances on the fly during machine setup without altering the fixed 600 mm cylinder mounting.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-75S the Right Cylinder?
Select this adjustable-stroke model when your application requires frequent product-size changeovers or commissioning tweaks without physically swapping cylinders or adding external stops. If you need less thrust, stepping down to a 100 mm bore yields 3927N push at 0.5 MPa; stepping up to a 160 mm bore provides 10053N. For exact ISO 15552 dimensional interchangeability, match the 125 mm bore, 600 mm stroke, PT tapered port threads, and the -S magnet requirement.
Given the 600 mm stroke length, the 32 mm rod diameter and M27x2 thread still require external guiding to prevent excessive side-loading on the piston. Remember that the rear adjuster and variable air cushions only manage deceleration; they do not function as a lock. For load-holding without live air, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock. The SAIJ mounting set includes 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 SAIJ125AX600-75S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster acts as a mechanical stop that shortens the 600 mm nominal stroke by up to 75 mm, creating a usable travel window of 525-600 mm. It requires live air to maintain position and does not lock the load.
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