This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X100-30, 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 SIJ63X100-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 100mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X100-30, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X100-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 70-100 mm extension out of the 100 mm nominal maximum. The 63 mm bore features a G3/8 port, M16x1.5 rod thread, and 30 mm adjustable air cushions.
The direct replacement is the SAIJ63X100-30, retaining the same interface, force, and porting. 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, and the stop screw sets end position rather than locking the load.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X100-30 |
| Bore size | Ø63 mm |
| Stroke | 100 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 SAIJ63X100-30 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 SAIJ63X100-30 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. |
| ×100 | 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 dial in the exact 70-100 mm extend position for seating bearings without machining custom spacers.
Adjusts the extend stop on the fly to accommodate different package lengths on a 63 mm bore actuator line.
Trims the extend stroke by up to 30 mm on-site to push varied carton sizes into a packing station precisely.
To replace the discontinued SIJ63X100-30, order the direct replacement SAIJ63X100-30; it preserves the G3/8 port, 30 mm adjust window, and ISO 15552 mounting interfaces (Basic, FA, LB, TC). Choose the 30 mm adjust window if your extend stroke needs field tuning between 70 and 100 mm. Select FA, LB, or TC mounts based on your load axis. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch. For strokes at or above 300 mm, verify side-load limits to prevent guide wear. The external stop sets end position only; it is not a lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
Yes, the SIJ63X100-30 is discontinued. The direct replacement is the SAIJ63X100-30, which maintains the same ISO 15552 interface, 63 mm bore, 100 mm stroke, 30 mm adjust window, and G3/8 port. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 30 mm adjust window, allowing the extend stroke to be shortened from the 100 mm nominal maximum down to 70 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 SAIJ63X100-30 replacement — usually within 7-8 hours.