This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X500-100, 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 SIJ63X500-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X500-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X500-100 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 500mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 100mm on-site, yielding a usable 400-500mm extension. This SIJ model is discontinued; the direct replacement is the SAIJ63X500-100, matching the interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch. The stop screw sets end position but is not a load lock; on air loss the piston drifts, so use an external rod lock or SAIL/BSAI variant for held loads.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X500-100 |
| Bore size | Ø63 mm |
| Stroke | 500 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 SAIJ63X500-100 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 SAIJ63X500-100 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. |
| ×500 | 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).
Tuning the extend stroke on-site by up to 100mm allows a single cylinder to push parts to varying distances without swapping the entire actuator.
A 63mm bore diverter can be retracted or extended precisely to 400-500mm to accommodate changing product widths on a packaging line.
Field-trimming the extend stroke allows precise positioning of loads onto pallets of varying depths without reprogramming fixed stops.
To replace the discontinued SIJ63X500-100, order the direct replacement SAIJ63X500-100, keeping the 63mm bore, 500mm nominal stroke, and 100mm adjust window. Choose the 100mm adjust window if your extend stroke needs field tuning between 400-500mm. Mounting interfaces (Basic, FA, LB, TC) reuse existing ISO 15552 holes. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add external sensors if needed. For the 500mm stroke, support side loads with external guides to prevent rod bending.
Replacement checklist
Yes, the SIJ63X500-100 is discontinued. The direct replacement is the SAIJ63X500-100, which shares the identical ISO 15552 interface, 63mm bore, 500mm stroke, 100mm adjust window, and G3/8 port.
The external stop screw window is 100mm, allowing the 500mm extend stroke to be shortened on-site down to 400mm. The stop sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X500-100 replacement — usually within 7-8 hours.