This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-100, 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.

The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X80-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X80-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 0-80 mm extend stroke from the 80 mm nominal maximum. This SKU has no -S magnet and cannot accept a magnetic switch.
Because SIJ is end-of-life, the direct replacement is the SAIJ63X80-100, retaining the same ISO 15552 mounting interface, bore, force, and adjust window. The SAIJ family introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The stop screw sets end position only; it is not a load lock.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-100 |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAIJ63X80-100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAIJ63X80-100 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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).
Machining stations needing precise, on-site extend stroke tuning to accommodate varying part heights without swapping cylinders.
Diverting or stopping products of mixed sizes on a line, using the 100 mm adjust window to set the exact end position.
Pushing cartons into test fixtures where the required extend distance changes per product run and field tuning is essential.
To replace the SIJ63X80-100, order the direct replacement SAIJ63X80-100, keeping the identical ISO 15552 interface, G3/8 port, and 100 mm adjust window. Choose the 100 mm adjust window when you need on-site flexibility to shorten the extend stroke down to 0 mm. Mounting options include Basic, FA, LB, and TC. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. For stroke lengths of 300 mm or greater, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SIJ63X80-100 is discontinued. The direct replacement is the SAIJ63X80-100, which shares the same ISO 15552 interface, 63 mm bore, 80 mm nominal stroke, 100 mm adjust window, and G3/8 port.
The external stop screw allows you to trim the extend stroke by up to 100 mm on-site, reducing the 80 mm nominal stroke down to 0 mm. The stop sets end position only; it is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-100 replacement — usually within 7-8 hours.