This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X1000-30, 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.

The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X1000-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1000mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X1000-30, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X1000-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore and 1000 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 970-1000 mm extension. The stop sets the end position; it is not a load lock.
Because this SIJ model is end-of-life, the direct replacement is the SAIJ63X1000-30, retaining the same interface, force, and mounting. The SAIJ family features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet (-S) and cannot take a sensor.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X1000-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X1000-30 |
| Bore size | Ø63 mm |
| Stroke | 1000 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 SAIJ63X1000-30 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 SAIJ63X1000-30 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. |
| ×1000 | 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).
Extracting parts from a deep press bed requires the full 1000 mm extension, but varying tool heights need the 30 mm stop screw to trim the exact unload position on-site.
Pushing varied pallet widths down a line benefits from the 970-1000 mm usable stroke window, allowing operators to dial in the exact push distance without changing the cylinder.
To replace the discontinued SIJ63X1000-30, order the direct replacement SAIJ63X1000-30, matching the 63 mm bore, 1000 mm nominal stroke, 30 mm adjust window, and G3/8 port. The 30 mm adjust window is ideal for fine-tuning the extend end position without shims. Mounting interfaces include FA, LB, and TC. Because this is a 1000 mm stroke, use external guides to prevent rod bending under side loads. This non-magnetic SKU cannot accept legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
Yes, the SIJ63X1000-30 is discontinued. The direct replacement is the SAIJ63X1000-30. It shares the identical ISO 15552 interface, 63 mm bore, 1000 mm stroke, 30 mm adjust window, G3/8 port, and mounting options. The SAIJ family also uses an upgraded piston seal for longer life.
This double-acting double-rod cylinder has a 30 mm adjust window (usable extend stroke 970-1000 mm). It uses a G3/8 port and 30 mm adjustable cushions. The stop screw sets end position but is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X1000-30 replacement — usually within 7-8 hours.