This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X25-10, 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 SIJ63X25-10
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10 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 SAIJ63X25-10, 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 → SAIJ63X25-10
- 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 SIJ63X25-10
The AirTAC SIJ63X25-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore and 25 mm nominal extend stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 15-25 mm stroke window. The direct replacement is the SAIJ63X25-10, matching the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting interface for direct reuse of FA, LB, and TC brackets, and uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. This non-magnet SKU cannot take a switch. The stop screw sets end position only; it is not a lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X25-10 |
| 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 SAIJ63X25-10 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 SAIJ63X25-10 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 SIJ63X25-10
| 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 SIJ63X25-10 Is Used
Short-Stroke Clamping
Provides 15-25 mm of field-tuned extend travel for clamping parts of varying thickness, using the stop screw to dial in the exact grip without reprogramming.
Divertor Gate Stops
Adjusts the extend endpoint on-site by up to 10 mm to fine-tune a divertor gate profile, ensuring product alignment without changing the cylinder body.
Packaging Push-off
Trims the extend stroke to accommodate minor carton size variations on a packaging line, allowing rapid mechanical setup for different box formats.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X25-10 with the SAIJ63X25-10
To replace the discontinued SIJ63X25-10, order the direct replacement SAIJ63X25-10, reusing your existing FA, LB, or TC mounts. The 10 mm adjust window is ideal for precise end-position tuning without machining. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors; add external proximity sensors if detection is required. For any stroke >=300 mm, verify side-load limits to prevent rod binding. Remember the stop screw only sets position and does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X25-10
- ✓ 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 SIJ63X25-10 FAQ
Yes, the SIJ63X25-10 is discontinued. The direct replacement is the SAIJ63X25-10. It offers the same ISO 15552 interface, 63 mm bore, 25 mm nominal stroke, 10 mm adjust window, G3/8 port, and mounting compatibility. The SAIJ also features an upgraded piston seal for longer life.
The external stop screw shortens the extend stroke by up to 10 mm on-site, giving a 15-25 mm usable window. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X25-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X25-10 replacement — usually within 7-8 hours.