Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30 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 SAIJ100BX425-30
The AirTAC SAIJ100X425-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel within a 395 to 425 mm window without adding external stops. It delivers a robust 3927 N push force at 0.5 MPa, scaling up to 7068 N at 0.9 MPa, making it well-suited for heavy-duty positioning tasks.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and includes a PT tapered port. The extruded aluminum barrel integrates sensor grooves on both sides, and while this specific SKU omits the magnet option, the grooves remain ready for CMSE reed or DMSE electronic sensors if needed later.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30 |
|---|---|
| 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 SAIJ100BX425-30
| 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 SAIJ100BX425-30 Is Used
Machine Changeover
Dial in the 30 mm stroke variance during product size changes to set new end stops rapidly without physically swapping cylinders on the line.
Heavy Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy jigs into place, using the rear screw to hit the exact 395-425 mm target.
Long Stroke Alignment
Use the 425 mm travel for extending and aligning heavy workpieces, trusting the SUS304 rod for durability in demanding environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-30 the Right Cylinder?
Choose this 100 mm bore when an 80 mm bore (2513 N push at 0.5 MPa) lacks the thrust for your payload, but a 125 mm unit (6136 N) is physically oversized. The 30 mm adjustment range is ideal for dialing in exact end positions during machine commissioning or product changeover, avoiding the need to swap a fixed-stroke SAI cylinder. For this 425 mm stroke, an external guide is recommended to prevent side-load damage to the rod.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 425 mm stroke, PT G1/2 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interface. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air pressure. For true load-holding, consider an external rod lock or AirTAC SAIL and BSAI series.
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 SAIJ100BX425-30 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster allows you to mechanically shorten the 425 mm nominal stroke by up to 30 mm, providing a usable travel window of 395 to 425 mm. It acts as a physical stop to fine-tune the end position and does not lock the load without air pressure.
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