This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X450-100S, 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 SIJ100X450-100S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X450-100S 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 SAIJ100X450-100S, 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 → SAIJ100X450-100S
- 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 SIJ100X450-100S
The AirTAC SIJ100X450-100S is a discontinued double-acting double-rod adjustable-stroke ISO 15552 cylinder. The external stop screw lets you trim the extend stroke by up to 100mm on-site, giving a usable 350-450mm window from the 450mm nominal maximum. The direct replacement is the SAIJ100X450-100S, retaining the same interface, force, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a lock; loads drift on air loss, so use an external rod lock or SAIL/BSAI variant for holding. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-100S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X450-100S |
| 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 SAIJ100X450-100S 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 SAIJ100X450-100S 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 SIJ100X450-100S
| 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 SIJ100X450-100S Is Used
Variable Press Stroke
Adjusting the extend end-position on-site by up to 100mm allows a single press to accommodate varying material thicknesses without changing the entire cylinder setup.
Adjustable Diverter Arm
Tuning the extend stroke lets operators alter the reach of a sorting diverter arm on the fly to handle different package widths on the line.
Variable Depth Stops
Field-trimming the extend stroke from 450mm down to 350mm creates adjustable physical end-stops for pallets or goods of varying depths.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-100S with the SAIJ100X450-100S
To replace the discontinued SIJ100X450-100S, order the exact direct replacement SAIJ100X450-100S. Choose the 100mm adjust window if you need to trim the 450mm extend stroke down to a 350mm minimum on-site. Mounting options include FA, LB, and TC brackets. The -S suffix includes a piston magnet for position sensing. Because the 450mm stroke is long, account for side-load and rod-bending forces by using external guides to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X450-100S
- ✓ 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 SIJ100X450-100S FAQ
Yes, the SIJ100X450-100S is discontinued. The direct replacement is the SAIJ100X450-100S, which shares the same ISO 15552 interface, 100mm bore, 450mm stroke, 100mm adjust window, G1/2 port, and mounting options. The SAIJ family also adds an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw has a 100mm window, allowing you to shorten the 450mm nominal extend stroke down to 350mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X450-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X450-100S replacement — usually within 7-8 hours.