Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30S 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 SAIJ125AX600-30S
The AirTAC SAIJ125X600-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 570-600mm usable travel window. It delivers 8590N of push force at 0.7 MPa. The -S option includes a piston magnet for position sensing with AirTAC CMSE reed and DMSE solid-state switches.
This unit uses a SUS420J2 stainless steel rod (code A) for corrosion resistance and pairs with PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position without holding the load. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30S |
|---|---|
| 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 SAIJ125AX600-30S
| 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 SAIJ125AX600-30S Is Used
Machine Changeover
Dial in the 570-600mm retract position during product size changes to set new end stops without physically swapping the cylinder.
End-Stop Tuning
Fine-tune the final resting position of large jigs at commissioning, absorbing mechanical tolerances without adding external stopper blocks.
Heavy Forming Press
Leverage 6136N of push force at 0.5 MPa to drive large forming or clamping heads, using the rear screw to set the precise lower dead point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30S the Right Cylinder?
Choose this 125mm bore when you need the 6136N push force at 0.5 MPa, stepping up from a 100mm bore (5497N at 0.7 MPa) for heavier tooling. The 30mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-of-stroke position without adding external stops or swapping out a fixed-stroke SAI cylinder. Because the 600mm stroke is long, ensure you use an external guide to prevent side-load damage to the rod.
To replace this ISO 15552 cylinder, match the 125mm bore, 600mm stroke, 30mm adjustment, PT port thread, SUS420J2 rod material, and -S magnet. Remember that the rear adjuster and air cushions only decelerate the travel end; they do not hold the load. For static load-holding without live air pressure, select an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder.
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 SAIJ125AX600-30S FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.7 MPa the push force increases to 8590N.
The rear adjuster screw lets you trim the effective travel back by up to 30mm, creating a 570-600mm usable stroke window. It functions as a mechanical stop and does not lock the load without live air.
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