Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-30 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 SAIJ125X600-30
The AirTAC SAIJ125X600-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 570 to 600 mm. It delivers a substantial 6136 N push force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks. The extruded aluminum barrel features sensor grooves on both sides for flexible switch placement.
This model uses a PT tapered port thread and a 32 mm carbon steel rod. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning; it is not a locking mechanism. For applications requiring the load to be held without continuous air pressure, a dedicated SAIL pneumatic lock or BSAI clamp-lock cylinder is required instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-30 |
|---|---|
| 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 SAIJ125X600-30
| 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 SAIJ125X600-30 Is Used
Heavy-Duty Press Tuning
Dial in the exact 570-600 mm retract stop during machine commissioning to accommodate varying material thicknesses without swapping out the entire actuator.
Product Changeover Diverter
Adjust the rear stopper on the fly to alter the stroke end-position when a packaging line switches to a different pallet or product size.
Long-Stroke Assembly Station
Leverage the 6136 N of thrust at 0.5 MPa to move heavy pallets into position, using the rear adjuster to set the precise resting location.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-30 the Right Cylinder?
Select this 125 mm bore cylinder when your application requires high thrust (6136 N push at 0.5 MPa) and precise end-position tuning without external stop blocks. If your force requirements are lower, stepping down to a 100 mm bore yields 3927 N of thrust while saving envelope space. Conversely, moving up to a 160 mm bore provides 10053 N of push force for heavier loads.
The adjustable stroke is ideal for product changeovers on a line, allowing you to dial in the exact retract distance within the 30 mm window. Because the nominal stroke is 600 mm, the 32 mm rod and piston assembly will experience amplified side-loading forces if the load is misaligned. An external guide rail must be used to prevent premature seal wear. When replacing an ISO 15552 cylinder, verify the 125 mm bore, 600 mm stroke, 30 mm adjustment range, PT G1/2 port, and standard mounting footprint (which omits FB, CA, CB, and CR options).
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 SAIJ125X600-30 FAQ
The rear adjuster screw allows you to mechanically shorten the effective stroke by up to 30 mm, providing a usable travel window of 570 to 600 mm. This stopper only sets the end position; it does not lock the load without live air pressure.
At an operating pressure of 0.5 MPa, the SAIJ125X600-30 provides a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
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