This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X450-30, 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 SIJ100X450-30
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X450-30 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 SAIJ100X450-30, 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 → SAIJ100X450-30
- 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 SIJ100X450-30
The AirTAC SIJ100X450-30 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 450 mm nominal stroke and a G1/2 port. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, giving a usable extend range of 420-450 mm. The stop sets the end position; it is not a load lock. This SIJ model is discontinued; the direct replacement is the SAIJ100X450-30, matching the bore, force, adjust window, port and mounting.
The SAIJ upgrade features an improved two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnetic SKU cannot take a switch; for load holding without live air, use an external rod lock or the SAIL/BSAI variants, as cushions only decelerate.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-30 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X450-30 |
| 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 SAIJ100X450-30 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 SAIJ100X450-30 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 SIJ100X450-30
| 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 SIJ100X450-30 Is Used
Press Fit Tuning
Adjusting the extend stroke by up to 30 mm on-site allows operators to dial in the exact pressing depth of bearings without changing the fixture setup.
Variable Transfer Stops
A packaging line can alter the extend stop position between 420 and 450 mm to accommodate different carton sizes on the fly.
Pallet Positioning
Fine-tune the end-of-stroke contact point for different pallet widths, ensuring precise alignment before the load is transferred.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-30 with the SAIJ100X450-30
To replace the discontinued SIJ100X450-30, order the direct replacement SAIJ100X450-30, keeping the ISO 15552 mounting interface and G1/2 port. The 30 mm adjust window is ideal for fine-tuning the 420-450 mm extend position without machining. Mounting options include Basic, FA, LB, and TC. Because this SKU lacks the -S magnet, it cannot accept a magnetic switch. For the 450 mm stroke, use external guides to prevent rod bending and manage side loads. Note that the stop screw sets end position but does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X450-30
- ✓ 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 SIJ100X450-30 FAQ
Yes, the SIJ100X450-30 is discontinued. The direct replacement is the SAIJ100X450-30. It shares the same ISO 15552 interface, 100 mm bore, 450 mm stroke, 30 mm adjust window, G1/2 port, and mounting options, but adds an upgraded piston seal.
The external stop screw provides a 30 mm adjust window, allowing the extend stroke to be shortened from the 450 mm maximum down to 420 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X450-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X450-30 replacement — usually within 7-8 hours.