This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X150-100, 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 SIJ63X150-100 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 SAIJ63X150-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X150-100 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.
As SIJ is end-of-life, the direct replacement is the SAIJ63X150-100, preserving the ISO 15552 mounting interface, bore, and force. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnetic SKU cannot take a switch, and the stop screw sets end position but is not a load lock.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X150-100 |
| 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 SAIJ63X150-100 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 SAIJ63X150-100 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. |
| ×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).
Allows operators to tune the 50-150 mm extend stroke on-site to match different material thicknesses without swapping the entire actuator.
Accommodates changing package sizes on a line by trimming the extend position up to 100 mm, ensuring precise placement at downstream stations.
Provides a mechanical end position that can be dialed in exactly where needed for varying pallet dimensions within the 150 mm window.
To replace the discontinued SIJ63X150-100, order the direct replacement SAIJ63X150-100, which retains the 63 mm bore, 150 mm max stroke, 100 mm adjust window, G3/8 port, and FA/LB/TC mountings. Choose the 100 mm adjust window when you need on-site extend flexibility from 50 to 150 mm. Because this SKU lacks the -S magnet, it cannot accept a legacy CS1-B/DS1-B sensor; add external sensing if required. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding. The external stop sets end position but does not hold loads on air loss; for held loads use SAIL, BSAI, or an external rod lock.
Replacement checklist
Yes, the SIJ63X150-100 is discontinued. The direct replacement is the SAIJ63X150-100, which shares the identical ISO 15552 interface, 63 mm bore, 150 mm stroke, 100 mm adjust window, and G3/8 port.
The 100 mm external stop screw window allows trimming the 150 mm nominal extend stroke down to 50 mm on-site. 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 SAIJ63X150-100 replacement — usually within 7-8 hours.