Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 125mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100
The AirTAC SAIJ50X125-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 25 to 125 mm, allowing you to dial back the nominal 125 mm stroke by up to 100 mm without adding external stops.
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore unit is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance. It features PT tapered port threads and lacks a standard piston magnet, making it a pure actuator for basic positioning tasks.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX125-100 Is Used
Machine Changeovers
Rapidly reconfigure end-of-stroke positions during product size changeovers on a packaging line without replacing the entire actuator.
Variable End-Stops
Dial in the exact 25 to 125 mm travel window required for multi-stage machining operations, ensuring precise part ejection.
Commissioning Fine-Tune
Trim the cylinder's effective travel during initial setup to perfectly time machine sequencing and prevent mechanical crashes.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-100 the Right Cylinder?
Choose this 50 mm bore when you need higher force than a 40 mm cylinder (628 N at 0.5 MPa) but want a smaller footprint than a 63 mm unit (1559 N). The massive 100 mm adjustment range is ideal for machine changeovers, letting you set variable end-stops on the fly instead of swapping out a fixed-stroke SAI cylinder.
Because the stroke is 125 mm, side-load risks are minimal, but always guide the load for smooth operation. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true drop-prevention, consider an external rod lock or the AirTAC SAIL series. This model is dimensionally interchangeable per ISO 15552.
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 SAIJ50 Adjustable Cylinder SAIJ50AX125-100 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its 125 mm nominal length down to as little as 25 mm. It only sets the travel end and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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