Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 425mm 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
- Stroke425 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50S
The AirTAC SAIJ100X425-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3927N of push force at 0.5 MPa and provides a usable travel window of 375-425mm, letting you trim the 425mm nominal stroke by up to 50mm during commissioning.
This unit includes a SUS304 stainless steel rod for corrosion resistance and a -S magnet for position sensing. It is equipped with PT tapered G1/2 ports and dual-side sensor grooves compatible with CMSE reed and DMSE electronic switches.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 425 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 SAIJ100BX425-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×425 | 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 SAIJ100BX425-50S Is Used
Machine Changeover
Dial in the 375-425mm travel window to accommodate new product sizes without physically swapping the cylinder or repositioning hard stops.
End-Position Tuning
Use the 50mm rear adjustment screw to precisely set the retract distance during initial setup, ensuring perfect alignment of tooling.
Automated Forming
Leverage the 3927N push force and 36mm cushion stroke to drive forming assemblies, relying on the adjuster to dial out mechanical slack.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-50S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when you need to fine-tune end positions on the fly without adding external stops. If your application requires less force, stepping down to an 80mm bore yields 2513N at 0.5 MPa; if you need more push, a 125mm bore provides 6136N. Since the stroke is 425mm, an external guide is recommended to handle side loads. The rear adjuster acts only as a travel stop and does not hold the load without live air—use an SAIL or BSAI cylinder for pneumatic locking.
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 SAIJ100BX425-50S FAQ
The nominal stroke is 425mm, but the rear adjuster allows you to shorten the effective travel by up to 50mm, creating a usable window of 375-425mm.
Because it includes a -S magnet, it works directly with AirTAC CMSE reed switches and DMSE electronic solid-state sensors mounted in the extruded barrel grooves.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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