Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 225mm 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.
- BoreØ100 mm
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S
The AirTAC SAIJ100X225-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 225 mm stroke that can be dialed back by up to 50 mm, yielding a highly flexible 175-225 mm usable travel window. Delivering 3927 N of push force at 0.5 MPa, it is built to handle substantial loads during operation.
This specific SKU features a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the unit uses a reduced mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) compared to fixed-stroke variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX225-50S Is Used
Machine Changeover
Quickly dial in the 175-225 mm travel window during product size transitions on a packaging line without changing out the physical cylinder mounting.
End-Position Tuning
Fine-tune the retract stop during initial commissioning to perfect the seating of heavy components, using the 50 mm adjustment range to absorb mechanical tolerances.
Heavy Forming Operations
Leverage the 3927 N of push force at 0.5 MPa for pressing or forming tasks while retaining the ability to adjust the stroke end-point for different material thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-50S the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires heavy thrust—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while moving up to 125 mm yields 6136 N. The adjustable stroke is selected over a fixed SAI model when you need to fine-tune the retract end position during machine commissioning or product changeover without physically swapping the cylinder or adding external stops.
Because the stroke is 225 mm (over 200 mm), an external guide is recommended to prevent excessive side-loading on the 25 mm rod. When matching ISO 15552 replacements, ensure the bore, 225 mm stroke, 50 mm adjustment, PT tapered G1/2 port, and -S magnet are specified. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air pressure, so consider a SAIL or BSAI cylinder if true locking is required.
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 SAIJ100 Adjustable Cylinder SAIJ100BX225-50S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke by up to 50 mm. This creates a 175-225 mm usable travel window, allowing you to fine-tune the retract position at commissioning without swapping the cylinder. The adjuster only sets the travel end and does not lock the load without live air.
At 0.5 MPa operating pressure, this cylinder provides 3927 N of push force and 3681 N of pull force. If higher forces are needed, stepping up to a 125 mm bore yields 6136 N of push force at the same pressure.
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