Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-100
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 225mm 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
- Stroke225 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 SAIJ50AX225-100
The AirTAC SAIJ50X225-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 125 to 225 mm usable travel window. Delivering 982 N of push force at 0.5 MPa, it handles mid-range actuation tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This variant utilizes a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads. The rear stopper screw allows you to dial back the nominal 225 mm stroke by up to 100 mm, providing immense flexibility during machine commissioning without needing external stops or a different cylinder.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-100 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 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 SAIJ50AX225-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×225 | 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 SAIJ50AX225-100 Is Used
Variable End-Stop Positioning
Dial in the exact retraction point between 125 and 225 mm during machine setup to accommodate different product lengths without swapping hardware.
Commissioning Fine-Tuning
Trim up to 100 mm of stroke at the rear adjuster to perfect end-of-stroke timing and prevent mechanical interference during initial line runs.
Product Size Changeovers
Rapidly adjust the effective travel window on packaging lines when switching between different package dimensions, minimizing downtime.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-100 the Right Cylinder?
Select this 50 mm bore adjustable cylinder when your application requires a variable end-stop within a 125 to 225 mm range, delivering 982 N push and 825 N pull at 0.5 MPa. If your setup demands higher thrust, stepping up to the 63 mm bore yields 1559 N push at the same pressure. Because the 225 mm stroke exceeds 300 mm is false here, a side-load guide is less critical, but the 20 mm rod and M16x1.5 thread still handle moderate side loads well.
Choose this adjustable SAIJ over a fixed-stroke SAI when you need on-the-fly end-position tuning for product changeovers. To match this ISO 15552 replacement exactly, specify: 50 mm bore, 225 mm stroke, 100 mm adjuster, PT G1/4 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air, so for dead-end holding, consider an SAIL or BSAI 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 SAIJ50 Adjustable Cylinder SAIJ50AX225-100 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 can deliver up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from the nominal 225 mm down to as little as 125 mm. This stopper only sets the travel end and does not lock or hold the load without continuous air pressure.
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