This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X450-100S, 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S 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 SAIJ63X450-100S, 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 → SAIJ63X450-100S
- 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S
The AirTAC SIJ63X450-100S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. Its external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 350-450 mm window from the 450 mm nominal maximum. It features a G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. The direct replacement is the SAIJ63X450-100S, sharing the same interface, force, and mounting.
The SAIJ upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note that the stop screw sets the end position but is not a load lock; without live air the piston drifts. For held loads, use an external rod lock or the SAIL/BSAI variants. At 450 mm stroke, mind rod-bending and use external guides to manage side loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X450-100S |
| 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 SAIJ63X450-100S 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 SAIJ63X450-100S 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 SIJ63X450-100S
| 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 SIJ63X450-100S Is Used
Variable-Length Push Operations
Assembly stations needing field stroke tuning to accommodate part height variations without swapping cylinders, utilizing the 100 mm on-site extend trim.
Adjustable Diverting Arms
Pneumatic diverters on packaging lines where the extend end position requires periodic adjustment to handle different carton widths precisely.
Tunable Material Stops
Material handling stops that must be repositioned on the fly for varying product lengths, using the external stop screw to set the exact 350-450 mm extend point.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S with the SAIJ63X450-100S
To replace the discontinued SIJ63X450-100S, use the SAIJ63X450-100S directly—same ISO 15552 mounting interface, 63 mm bore, 450 mm nominal stroke, and 100 mm adjust window. Choose the 100 mm adjust window if your extend stroke needs on-site tuning between 350 and 450 mm. Mounting options include FA, LB, and TC brackets. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). Because the stroke is 450 mm (>=300 mm), verify side-load limits and support the rod with external guides to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X450-100S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X450-100S FAQ
Yes, the SIJ63X450-100S is discontinued. The direct replacement is the SAIJ63X450-100S. It shares the same ISO 15552 interface, 63 mm bore, 450 mm stroke, 100 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded two-piece Y-shaped piston seal for longer life.
The external stop screw window is 100 mm, allowing you to trim the extend stroke on-site from the 450 mm nominal maximum down to 350 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X450-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X450-100S replacement — usually within 7-8 hours.