Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-75S 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 SAIJ100BX425-75S
The AirTAC SAIJ100X425-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 350-425 mm usable travel window, letting you fine-tune the retract end position by up to 75 mm during commissioning without adding external stops. Delivering 3927 N push force at 0.5 MPa, it handles heavy loads with precision.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a magnet for CMSE or DMSE sensors. The extruded aluminum barrel avoids tie-rod construction, and the rear adjuster acts purely as a travel stop, meaning it will not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-75S |
|---|---|
| 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 SAIJ100BX425-75S
| 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 SAIJ100BX425-75S Is Used
Variable End-Stop Forming
Dial in the exact 350-425 mm retract distance for metal forming or bending operations without swapping out the entire cylinder.
Product Changeover
Quickly adjust the stroke by up to 75 mm on packaging lines when switching to a different product size or format.
Heavy Fixture Positioning
Leverage the 3927 N push force to move heavy jigs and fixtures into their exact end positions during automated machine setup.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-75S the Right Cylinder?
Choose this 100 mm bore when 80 mm (2513 N at 0.5 MPa) is too weak, but 125 mm (6136 N) is oversized. The adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product changeovers. For load-holding without live air, use an external rod lock or select a SAIL or BSAI cylinder instead.
With a 425 mm stroke, the 25 mm rod and M20x1.5 thread handle high side loads, but an external guide is recommended to prevent rod bending over long unsupported travel. This model uses PT tapered ports and is dimensionally interchangeable per ISO 15552. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX425-75S 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 screw lets you shorten the nominal 425 mm stroke by up to 75 mm, creating a 350-425 mm usable travel window. The adjuster acts as a mechanical stop to fine-tune the end position and does not lock the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.