This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X25-10S, 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.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X25-10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X25-10S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S
The AirTAC SIJ63X25-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 10 mm on-site, giving a usable 15-25 mm extension out of the 25 mm nominal maximum. It features a G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. The direct replacement is the SAIJ63X25-10S, sharing the same interface, force, and mounting.
The SAIJ successor retains the upgraded SAI piston seal (two Y-shaped one-way elements for low start-up pressure and long life). This -S model includes a piston magnet for legacy CS1-B/DS1-B switches. The stop screw sets the end position but is not a load lock; for held loads use an external rod lock or the SAIL/BSAI variants.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X25-10S |
| Bore size | Ø63 mm |
| Stroke | 25 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 SAIJ63X25-10S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAIJ63X25-10S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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).
Where the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S Is Used
Short-Stroke Clamping
Tuning the 15-25 mm extend stroke on-site to clamp parts of slightly varying thicknesses without repositioning the entire fixture.
Diverting Gate Stop
Adjusting the extend stop in 10 mm increments to act as a physical gate for different product heights on a packaging line.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S with the SAIJ63X25-10S
To replace the discontinued SIJ63X25-10S, order the direct replacement SAIJ63X25-10S, keeping the same 25 mm stroke, 10 mm adjust window, G3/8 port, and -S magnet. Choose the 10 mm adjust window when you need precise 15-25 mm extend tuning. Mounting interfaces (FA, LB, TC) reuse existing ISO 15552 holes. Because stroke is under 300 mm, side-load rod deflection is minimal. The stop screw only sets the end position; it does not hold loads on air loss—use an external rod lock or pilot-operated check valve for that.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X25-10S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10S FAQ
Yes, the SIJ63X25-10S is discontinued. The direct replacement is the SAIJ63X25-10S. It shares the same ISO 15552 interface, 63 mm bore, 25 mm nominal stroke, 10 mm adjust window, G3/8 port, and mounting options, while adding an upgraded SAI piston seal.
The external stop screw offers a 10 mm adjust window, allowing you to shorten the 25 mm maximum extend stroke down to 15 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X25-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X25-10S replacement — usually within 7-8 hours.