This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X200-100S, 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 SIJ63X200-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X200-100S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X200-100S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. The direct replacement is the SAIJ63X200-100S, retaining the 63mm bore, 200mm nominal stroke, G3/8 port, and 100mm adjust window. An external stop screw lets you trim the extend stroke by up to 100mm on-site, yielding a usable 100-200mm extension. This stop sets the end position; it is not a load lock, and a plain cylinder drifts on air loss.
The SAIJ upgrade utilizes an upgraded two Y-shaped one-way piston seal for low start-up pressure. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X200-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X200-100S |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAIJ63X200-100S 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 SAIJ63X200-100S 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. |
| ×200 | 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 100mm extend window on-site to match varying material thicknesses without swapping the entire actuator assembly.
Accommodating fluctuating box heights on a packaging line by trimming the extend stroke within the 100-200mm range.
Repositioning a conveyor sorting gate on-site using the external stop screw to handle different product widths dynamically.
To replace the discontinued SIJ63X200-100S, order the direct replacement SAIJ63X200-100S, reusing your existing FA, LB, or TC ISO 15552 mounts. The 100mm adjust window allows field tuning the extend stroke down to 100mm without machining. The -S magnet supports legacy CS1-B/DS1-B sensors (current AirTAC switches on SAIJ). For stroke lengths >=300mm, verify side-load guidance to prevent rod binding. Because the stop screw is not a lock, specify an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
Yes, the SIJ63X200-100S is discontinued. The direct replacement is the SAIJ63X200-100S. It shares the identical ISO 15552 interface, 63mm bore, 200mm stroke, 100mm adjust window, G3/8 port, and mounting footprint, but adds an upgraded piston seal.
The external stop screw allows trimming the extend stroke by up to 100mm on-site (usable 100-200mm). 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 SAIJ63X200-100S replacement — usually within 7-8 hours.