Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-30S 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 SAIJ50AX125-30S
The AirTAC SAIJ50X125-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 982N push force at 0.5MPa and features a 95-125mm usable travel window, allowing you to trim the 125mm nominal stroke by up to 30mm during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This model features an SUS420J2 stainless steel rod for enhanced corrosion resistance and PT tapered port threads. It utilizes variable air cushions at both ends to manage deceleration. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-30S |
|---|---|
| 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 SAIJ50AX125-30S
| 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 SAIJ50AX125-30S Is Used
Variable End-Stop Tuning
Dial in the exact 95-125mm travel distance during machine commissioning to accommodate varying product sizes without hardware changes.
Product Changeover Setup
Quickly adjust the retract end-position by up to 30mm when switching between different part lengths on a conveyor line.
Corrosive Assembly Stations
Leverage the SUS420J2 stainless steel rod and 982N output for reliable actuation in washdown or lightly corrosive manufacturing environments.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX125-30S the Right Cylinder?
Choose this 50mm bore when your application requires dialing in a precise end-of-travel position without swapping cylinders or adding external stops. If you need less force, the 40mm bore offers 628N at 0.5MPa, while the 63mm bore provides 1559N for heavier demands. The adjustable stroke is ideal for product changeovers on a line where minor position tweaks are necessary.
For load-holding without continuous air pressure, this cylinder is not a lock; you should consider the SAIL or BSAI series instead. This SAIJ50X125-30-S configuration includes a magnet for CMSE or DMSE sensors, uses PT ports, and supports the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since the stroke is under 300mm, side-load concerns are minimal, but always ensure proper alignment.
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 SAIJ50AX125-30S FAQ
At 0.5MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. The maximum force is 200kgf at 1.0MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 125mm nominal stroke by up to 30mm, creating a usable travel window of 95-125mm. It only sets the end position and does not lock the load without air pressure.
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