Airtac SAIJ100 Adjustable Cylinder SAIJ100AX425-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX425-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke425 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ100 Adjustable Cylinder SAIJ100AX425-20S
The AirTAC SAIJ100X425-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 405 to 425 mm. The PT tapered port threads ensure a tight, leak-free pneumatic connection during high-force operations.
This adjustable-stroke design allows you to fine-tune the retract end position at commissioning without adding external stops. The extruded aluminum barrel includes dual sensor grooves, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the rear adjuster acts only as a travel stop and the air cushion handles deceleration, this cylinder cannot hold a load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX425-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX425-20S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX425-20S
| 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 SAIJ100AX425-20S Is Used
Variable End-Stop Forming
Dial in the exact 405 to 425 mm retract position for metal forming or bending operations without changing the cylinder setup.
Product Changeover
Quickly adjust the stroke by up to 20 mm on a packaging line when switching to a different product size, saving setup time.
Assembly Press Tuning
Fine-tune the end position on high-force assembly presses to accommodate material thickness variations on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX425-20S the Right Cylinder?
The 20 mm adjustment window is ideal for product changeovers where exact end-position tuning is required without swapping cylinders. If your application requires true load-holding without live air pressure, consider the SAIL lock or BSAI clamp-lock cylinders instead.
At a 425 mm stroke, the M20x1.5 piston rod is highly susceptible to side-loading; an external guide rail is strongly recommended to prevent premature seal wear. When replacing an ISO 15552 cylinder, match the 100 mm bore, 425 mm stroke, 20 mm adjustment, G1/2 port, PT threads, and the -S magnet requirement.
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 SAIJ100AX425-20S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, providing a usable travel window of 405 to 425 mm. It acts as a mechanical stop 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 are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100AX425-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.