This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X450-20, 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 SIJ100X450-20
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X450-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 450mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X450-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X450-20
- 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 SIJ100X450-20
The AirTAC SIJ100X450-20 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 430-450mm stroke (450mm maximum). It features a 25mm rod, M20x1.5 thread, 36mm adjustable cushions, and a G1/2 port.
The direct replacement is the SAIJ100X450-20, reusing your ISO 15552 mounting without changes. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note: this non-magnetic SKU cannot take a switch, and the stop screw sets end position but is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-20 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X450-20 |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAIJ100X450-20 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 SAIJ100X450-20 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 SIJ100X450-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SIJ100X450-20 Is Used
Press Fit Tuning
Allows precise 430-450mm extend endpoint adjustment on-site for pressing assemblies, ensuring components seat correctly without mechanical rework.
Divertor Positioning
Provides adjustable extend stops for diverting mechanisms where product sizes vary, letting operators trim the 20mm window to change lanes quickly.
Carton Forming Stops
Offers field stroke tuning for packaging equipment that handles varying carton depths, ensuring accurate forming without repositioning the cylinder.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-20 with the SAIJ100X450-20
To replace the discontinued SIJ100X450-20, order the direct replacement SAIJ100X450-20, matching the 100mm bore, 450mm stroke, 20mm adjust window, and G1/2 port. Choose the 20mm adjust window if you need precise 430-450mm extend endpoint tuning. Mounting options include Basic, FA, LB, and TC. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add external sensing if needed. For the 450mm stroke, use external guides to prevent rod bending and manage side loads. Remember, the stop screw is not a lock; for load holding on air loss, use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X450-20
- ✓ 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 SIJ100X450-20 FAQ
Yes, the SIJ100X450-20 is discontinued. The direct replacement is the SAIJ100X450-20, which shares the identical ISO 15552 interface, 450mm stroke, 20mm adjust window, and G1/2 port. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw window is 20mm, allowing you to trim the extend stroke from 450mm down to 430mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X450-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X450-20 replacement — usually within 7-8 hours.