This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X150-100S, 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.

The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X150-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X150-100S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X150-100S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 50-150 mm extension from the 150 mm nominal maximum. This stop sets the end position firmly but is not a load lock.
Because this SIJ model is end-of-life, the direct replacement is the SAIJ63X150-100S. It retains the identical ISO 15552 mounting interface, bore, stroke, adjust window, and force, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B sensors.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X150-100S |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAIJ63X150-100S 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 SAIJ63X150-100S 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. |
| ×150 | 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).
Stamping or pressing stations requiring field stroke tuning to accommodate varying material thicknesses without swapping the entire actuator.
Routing packages of differing widths on a line by dialing the extend stop back within the 100 mm window to set the exact push distance.
Folding carton flaps where the exact end position must be fine-tuned on-site to avoid crushing varying box profiles.
To replace the discontinued SIJ63X150-100S, order the SAIJ63X150-100S; it is a direct fit preserving the ISO 15552 interface, G3/8 port, M16x1.5 rod thread, and 100 mm adjust window. Select the 100 mm adjust window when you need to trim the 150 mm nominal extend stroke down to a 50 mm minimum on-site. Mounting choices include Basic, FA, LB, and TC. The -S suffix ensures piston magnet compatibility for legacy CS1-B/DS1-B reed switches. For strokes of 300 mm or longer, carefully manage side loading to prevent premature seal wear. A plain cylinder does not hold loads on air loss; for held loads use an external rod lock or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SIJ63X150-100S is discontinued. The direct replacement is the SAIJ63X150-100S. It shares the same ISO 15552 interface, 63 mm bore, 150 mm stroke, 100 mm adjust window, G3/8 port, and force ratings, but features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 100 mm adjust window, allowing you to trim the 150 mm nominal extend stroke down to a 50 mm minimum on-site. Note the stop sets end position but is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X150-100S replacement — usually within 7-8 hours.