This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X450-75, 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 SIJ100X450-75
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X450-75 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 SAIJ100X450-75, 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 → SAIJ100X450-75
- 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 SIJ100X450-75
The AirTAC SIJ100X450-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 375-450 mm window from the 450 mm nominal maximum. The direct replacement is the SAIJ100X450-75, retaining the same interface, force, and mounting.
Because this SKU lacks a -S magnet, it cannot accept a magnetic switch for position sensing. The SAIJ upgrade utilizes a two-piece Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-75 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X450-75 |
| 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 SAIJ100X450-75 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 SAIJ100X450-75 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 SIJ100X450-75
| 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 SIJ100X450-75 Is Used
Variable Press Stroke
Trimming the extend stroke by up to 75 mm on-site allows precise positioning of press tools without machining custom spacers.
Adjustable Diverter Arm
Tuning the 375-450 mm reach on-site accommodates changing package widths on a sorting line without swapping cylinders.
Variable Height Pallet Stop
Field-adjusting the extend stop sets different end positions for layer height registration in palletizing tasks.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-75 with the SAIJ100X450-75
To replace the discontinued SIJ100X450-75, order the direct replacement SAIJ100X450-75, ensuring the 75 mm adjust window matches your 375-450 mm extend requirement. Reuse your FA, LB, or TC mounts directly via the ISO 15552 interface. As this SKU has no -S suffix, it cannot take a magnetic switch; add external sensors if needed. With the 450 mm stroke, support the load with external guides to prevent rod bending and excessive side-loading. Remember the stop screw only sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X450-75
- ✓ 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 SIJ100X450-75 FAQ
Yes, the SIJ100X450-75 is discontinued. The direct replacement is the SAIJ100X450-75, offering the same ISO 15552 interface, 450 mm stroke, 75 mm adjust window, and G1/2 port. The SAIJ family also features an upgraded piston seal.
The external stop screw window is 75 mm, allowing you to shorten the extend stroke from the 450 mm maximum down to 375 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X450-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X450-75 replacement — usually within 7-8 hours.