Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-10 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 SAIJ125AX200-10
The AirTAC SAIJ125X200-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, providing a usable travel window of 190-200 mm for precision end-position tuning. Equipped with a SUS420J2 stainless steel rod (code A), it delivers robust thrust up to 6136 N at 0.5 MPa and handles operating speeds of 30-500 mm/s. The extruded aluminum barrel includes sensor grooves on both sides for flexible detection mounting.
Unlike fixed-stroke alternatives, this model allows you to dial in the retract stop during commissioning without adding external stops. It features PT tapered port threads (G1/2) and adjustable air cushions at both ends to decelerate heavy loads smoothly. The rear adjuster acts strictly as a travel stop, so live air pressure is required to maintain position.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-10 |
|---|---|
| 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 SAIJ125AX200-10
| 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 SAIJ125AX200-10 Is Used
Precision End-Stop Tuning
Dial in the exact 190-200 mm retract position during machine commissioning to perfect product seating without swapping out the entire cylinder.
Product Changeover Setup
Quickly adjust the rear stopper by up to 10 mm to accommodate slightly different material lengths on a high-force production line.
Heavy Assembly Pressing
Leverage 8590 N of push force at 0.7 MPa to securely seat large components, using the variable air cushions to prevent end-of-stroke impact.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-10 the Right Cylinder?
Choose this 125 mm bore when you need substantial force—6136 N pull or 8590 N push at 0.7 MPa—combined with a 10 mm adjustment window for product changeovers. If your application requires less force, stepping down to an 80 mm bore yields 2268 N pull at 0.5 MPa, whereas moving up to a 160 mm bore provides 9425 N pull for heavier loads. The SAIJ125X200-10 is dimensionally interchangeable per ISO 15552, utilizing PT ports, SUS420J2 rod material, and a mounting set restricted to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
Because the 200 mm stroke is below the 300 mm threshold, external side-load guides are less critical than on longer strokes, though the 32 mm rod diameter and M27x2 thread still handle moderate side loads well. For load-holding without continuous air pressure, this cylinder is insufficient; you must integrate an external pilot-operated check valve or switch to a SAIL (air-released 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 SAIJ125AX200-10 FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force. It can reach a maximum push force of 11045 N at 0.9 MPa.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from 200 mm down to 190 mm. This enables fine-tuning of the end position at commissioning without changing the cylinder, but it does not lock the load without live air pressure.
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