This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X450-30, 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X450-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X450-30
- 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30
The AirTAC SIJ63X450-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 450mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 30mm on-site, yielding a usable 420-450mm window. The direct replacement is the SAIJ63X450-30, sharing the same interface, force, and mounting.
The SAIJ successor upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a -S magnet, so it cannot accept a switch. The stop screw sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X450-30 |
| Bore size | Ø63 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ63X450-30 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAIJ63X450-30 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30 Is Used
Variable Pitch Indexing
Parts feeding operations needing on-site extend tuning up to 30mm to alter the push pitch without swapping cylinders.
Adjustable Transfer Stops
Conveyor diverter gates requiring precise 420-450mm end-position adjustments to handle changing package sizes.
Dynamic Packaging Flaps
Carton sealing mechanisms that field-trim the extend stroke to accommodate varying box heights on the fly.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30 with the SAIJ63X450-30
To replace the discontinued SIJ63X450-30, order the direct replacement SAIJ63X450-30, matching the 63mm bore, 450mm stroke, and 30mm adjust window. Select the 30mm adjust window if your extend stroke requires field tuning between 420-450mm. Mounting interfaces (FA, LB, TC) reuse existing ISO 15552 fixtures. Because this SKU has no -S suffix, it cannot support a magnetic switch; confirm sensor requirements. Finally, at 450mm stroke, mind side-load and rod-bending forces—ensure external guides support the load to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X450-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-30 FAQ
Yes, the SIJ63X450-30 is discontinued. The direct replacement is the SAIJ63X450-30, which shares the identical ISO 15552 interface, 63mm bore, 450mm stroke, 30mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw allows trimming the extend stroke by up to 30mm on-site, giving a usable window of 420-450mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X450-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X450-30 replacement — usually within 7-8 hours.