This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X60-75S, 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 SIJ63X60-75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 60mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X60-75S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ63X60-75S 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 75 mm on-site, yielding a usable 0-60 mm extend window from the 60 mm nominal maximum. The direct replacement is the SAIJ63X60-75S, matching the interface, force, and mounting.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets the end position but is not a load lock; drift occurs on air loss. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X60-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X60-75S |
| Bore size | Ø63 mm |
| Stroke | 60 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 SAIJ63X60-75S 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 SAIJ63X60-75S 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. |
| ×60 | 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).
Adjusts the extend stroke on-site to set precise drilling depths for multiple material thicknesses without swapping cylinders.
Tunes the actuator reach on a packaging line to deflect different box sizes accurately using the 75 mm trim window.
To replace the discontinued SIJ63X60-75S, order the exact direct replacement SAIJ63X60-75S. If resizing, neighboring bores offer distinct 0.5 MPa forces: the 50 mm pushes 982 N, while the 80 mm pushes 2513 N. Select the adjust window based on your maximum needed extend; here the 75 mm window fully covers the 60 mm nominal stroke. Mounting interfaces (FA, LB, TC) reuse existing ISO 15552 fixtures. The -S suffix confirms a piston magnet is present. Since the 60 mm stroke is under 300 mm, side-load rod deflection is minimal. The stop screw sets end position only; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Replacement checklist
Yes, the SIJ63X60-75S is discontinued. The direct replacement is the SAIJ63X60-75S, offering the same ISO 15552 interface, 60 mm stroke, 75 mm adjust window, and G3/8 port. The SAIJ features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw trims the extend stroke by up to 75 mm on-site. The stop sets end position only and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X60-75S replacement — usually within 7-8 hours.