This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X250-100, 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 SIJ63X250-100
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X250-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X250-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X250-100
- 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 SIJ63X250-100
The AirTAC SIJ63X250-100 is a discontinued double-acting double-rod adjustable-stroke ISO 15552 cylinder with a 63mm bore and 250mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 100mm on-site, yielding a usable 150-250mm extension. As this SIJ model is end-of-life, the direct replacement is the SAIJ63X250-100, retaining the same ISO 15552 mounting interface, force, and adjustability.
The SAIJ successor incorporates an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life. This SKU lacks the -S suffix and therefore cannot accept a magnetic switch. Remember the stop screw sets the end position but is not a load lock; the cylinder will drift on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X250-100 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X250-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X250-100 |
| Bore size | Ø63 mm |
| Stroke | 250 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 SAIJ63X250-100 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 SAIJ63X250-100 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 SIJ63X250-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 SIJ63X250-100 Is Used
Variable Depth Forming
Allows operators to tune the extend stroke on-site for material thickness variations without swapping cylinders.
Adjustable Pusher Diverters
Accommodates changing package sizes on a line by trimming the extend stroke within the 100mm window.
Flexible End-Stops
Provides a hard external mechanical stop position that can be fine-tuned for different pallet heights.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X250-100 with the SAIJ63X250-100
To replace the discontinued SIJ63X250-100, order the direct replacement SAIJ63X250-100, which matches the 63mm bore, 250mm nominal stroke, 100mm adjust window, G3/8 port, and ISO 15552 mounting. Choose the 100mm adjust window if your application requires trimming the extend stroke anywhere between 150mm and 250mm on-site. Mounting options include Basic, FA, LB, and TC. Because this SKU has no -S magnet, it cannot use sensors; if position detection is required, select a -S SAIJ model. For strokes at or above 300mm, verify your side-load limits to prevent excessive guide wear. The external stop screw only sets the end position and does not hold the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X250-100
- ✓ 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 SIJ63X250-100 FAQ
Yes, the SIJ63X250-100 is discontinued. The direct replacement is the SAIJ63X250-100. It shares the identical ISO 15552 interface, 63mm bore, 250mm stroke, 100mm adjust window, and G3/8 port.
The theoretical max is 318kgf at 1.0MPa. The external stop screw provides a 100mm adjust window, allowing you to shorten the extend stroke from the 250mm maximum down to 150mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X250-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X250-100 replacement — usually within 7-8 hours.