Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 200mm 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
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-75S
The AirTAC SAIJ125X200-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 125 to 200 mm. Delivering 6136 N of pull force at 0.5 MPa, it handles heavy positioning tasks with ease. The integrated -S magnet supports position sensing via CMSE reed or DMSE electronic solid-state switches.
This configuration features a SUS420J2 stainless steel rod for improved corrosion resistance alongside PT tapered port threads. The extruded aluminum barrel includes dual-side sensor grooves, and the mounting set spans Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 SAIJ125AX200-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 SAIJ125AX200-75S Is Used
Machine Changeover
Fine-tune the 125 to 200 mm stroke window during product size transitions without physically swapping the actuator.
Heavy Press Positioning
Leverage 6136 N of pull force to securely position heavy jigs, using the rear stop for exact final placement.
Variable End Stops
Adjust the retract position on the fly for packaging lines handling multiple carton sizes.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-75S the Right Cylinder?
Choose this 125 mm bore when a 63 mm bore (1402 N pull at 0.5 MPa) lacks the thrust for your load, but a 160 mm bore is oversized. The 75 mm rear adjuster is ideal for product changeovers, letting you dial in the exact end-stop without swapping cylinders or adding external stops. Remember, the adjuster is a travel stop, not a lock; for dead-pilot load holding without live air, specify a SAIL or BSAI cylinder. To match this ISO 15552 footprint, use a 125 mm bore, 200 mm stroke, PT ports, and the -S magnet.
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 SAIJ125AX200-75S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 75 mm, providing a usable travel window of 125 to 200 mm. It only sets the travel end and does not lock the load without live air pressure.
At 0.5 MPa it provides 6136 N of pull force and 8590 N of push force. At the maximum operating pressure of 1.0 MPa, the push force reaches 12272 N.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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