Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-50
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-50 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 SAIJ125X600-50
The AirTAC SAIJ125X600-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. It features a carbon steel piston rod and PT tapered port threads. By integrating an external adjusting screw, this model provides a usable travel window of 550 to 600mm, allowing you to dial in the exact retract position without swapping components.
This 125mm bore actuator operates at speeds between 30 and 500mm/s and includes variable air cushions at both ends to manage kinetic energy. The adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-50 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-50 |
|---|---|
| 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 SAIJ125X600-50
| 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 SAIJ125X600-50 Is Used
Product Changeover
Dial in the 550-600mm travel window during format size changes on packaging lines without adding external mechanical stops.
Press Positioning
Fine-tune the retract end-stop during machine commissioning to achieve precise lower-halt coordinates for heavy pressing tasks.
Material Handling
Adjust the stroke on the fly for varying pallet sizes, utilizing the 6136N push force to move heavy loads reliably.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-50 the Right Cylinder?
Choose this 125mm bore cylinder when substantial thrust is required, stepping up from a 100mm bore that provides 3927N push at 0.5MPa. The 50mm adjustment range is ideal for product changeovers on a line, letting you fine-tune the 550-600mm travel window during commissioning rather than machining external stops or reverting to a fixed-stroke SAI cylinder. To match this ISO 15552 interchangeable unit, confirm your bore, 600mm stroke, 50mm adjustment, PT port, and required mounting.
Because the 600mm stroke creates a long lever arm, the 32mm carbon steel rod still requires an external guide to prevent excessive side-loading. If your application demands position holding without continuous air pressure, pair this cylinder with an external pilot-operated check valve or select a SAIL locking cylinder instead of relying on the rear stopper.
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 SAIJ125X600-50 FAQ
At 0.5MPa, it provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw mechanically stops the piston short of its 600mm nominal stroke, creating a 550 to 600mm usable travel window. It is a travel stop, not a lock, and cannot hold the load without live air pressure.
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Standard models usually ship in 3-4 days.
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