This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X25-20S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 25mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X25-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X25-20S
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S
The AirTAC SIJ100X25-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and 25 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 5-25 mm end position. The direct replacement is the SAIJ100X25-20S, matching the G1/2 port, M20x1.5 rod thread, and 36 mm adjustable cushions.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets end position but is not a load lock; for held loads use SAIL/BSAI or an external rod lock. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X25-20S |
| Bore size | Ø100 mm |
| Stroke | 25 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X25-20S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAIJ100X25-20S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S Is Used
Short-Stroke Clamping
Adjustable 5-25 mm extend tuning allows precise clamping contact on variable thickness parts without machining custom spacers.
Transfer Diverter
Field-trim the extend stop by up to 20 mm to perfectly set the diverter finger position for changing product widths.
Carton Sealing Press
Dial in the exact 5-25 mm downstroke on-site to seal varied carton flap heights cleanly without crushing the box.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S with the SAIJ100X25-20S
To replace the discontinued SIJ100X25-20S, order the direct replacement SAIJ100X25-20S, reusing your existing ISO 15552 FA, LB, or TC mounts. Choose the 20 mm adjust window when you need precise 5-25 mm extend tuning on-site. The -S magnet supports legacy CS1-B/DS1-B sensors. Because the 25 mm stroke is under 300 mm, side-load lever arm risks are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X25-20S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X25-20S FAQ
Yes, the SIJ100X25-20S is discontinued. The direct replacement is the SAIJ100X25-20S. It shares the same ISO 15552 interface, 100 mm bore, 25 mm stroke, 20 mm adjust window, G1/2 port, and mounting options, but adds an upgraded two Y-shaped one-way piston seal.
The external stop screw window is 20 mm, allowing you to trim the 25 mm nominal extend stroke down to a minimum of 5 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X25-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X25-20S replacement — usually within 7-8 hours.