Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30 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 SAIJ125AX600-30
The AirTAC SAIJ125X600-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 30 mm. This creates a precise 570-600 mm usable window, enabling fine end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa.
This unit is built with an SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. Because the 600 mm stroke is substantial, the 32 mm rod diameter and M27x2 rod thread provide robust support, though an external guide is still recommended for heavy side loads.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30 |
|---|---|
| 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 SAIJ125AX600-30
| 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 SAIJ125AX600-30 Is Used
Product Size Changeovers
Dial in the 570-600 mm stroke window mechanically during product family transitions, avoiding the need to physically swap out cylinders for different lengths.
Long-Stroke Forming
Leverage 6136 N of thrust at 0.5 MPa for pressing or forming tasks, using the rear stopper to guarantee consistent end-position accuracy across heavy-duty cycles.
Machine Setup Tuning
Fine-tune the end-of-stroke position during initial commissioning to perfectly align large tooling, eliminating the need for external mechanical shims or stop blocks.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX600-30 the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore (providing 3927 N push at 0.5 MPa) is insufficient, but a 160 mm bore (10053 N push) would be excessive. The adjustable stroke is ideal for product-size changeovers on a line, allowing operators to dial in the exact 570-600 mm end-stop mechanically. To match this ISO 15552 footprint, specify a 125 mm bore, 600 mm stroke, 30 mm adjustment, PT ports, and SUS420J2 rod material.
Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the AirTAC SAIL or BSAI cylinder series instead.
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 SAIJ125AX600-30 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 the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf of push force.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 600 mm stroke by up to 30 mm, creating a 570-600 mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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