This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X30-20S, 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 SIJ63X30-20S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X30-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 30mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X30-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X30-20S
- 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 SIJ63X30-20S
The AirTAC SIJ63X30-20S 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 20 mm on-site, yielding a usable 10-30 mm stroke from the 30 mm nominal maximum. The 63 mm bore uses a G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. The direct replacement is the SAIJ63X30-20S, sharing the same interface, force, and adjust window.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a load lock; for held loads use SAIL or BSAI variants. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X30-20S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X30-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X30-20S |
| Bore size | Ø63 mm |
| Stroke | 30 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 SAIJ63X30-20S 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 SAIJ63X30-20S 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 SIJ63X30-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×30 | 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 SIJ63X30-20S Is Used
Short-Stroke Clamping
Adjusts the extend endpoint on-site to clamp varying workpiece heights without swapping fixtures.
Transfer Diverter
Tunes the diverter stroke precisely to the product profile, preventing over-travel damage on the line.
Pallet Stopper
Sets a fixed physical stop position for incoming pallets, allowing 20 mm of field adjustment for pallet variations.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X30-20S with the SAIJ63X30-20S
To replace the discontinued SIJ63X30-20S, order the direct replacement SAIJ63X30-20S, reusing your FA, LB, or TC mounts. The 20 mm adjust window allows field tuning of the extend stroke. The -S suffix includes a magnet for position sensing. For strokes >=300 mm, verify side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X30-20S
- ✓ 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 SIJ63X30-20S FAQ
Yes, the SIJ63X30-20S is discontinued. The direct replacement is the SAIJ63X30-20S. It shares the same ISO 15552 interface, 63 mm bore, 30 mm stroke, 20 mm adjust window, G3/8 port, and mounting options, but uses an upgraded piston seal.
The external stop screw provides a 20 mm adjust window, allowing you to trim the extend stroke from the 30 mm maximum down to 10 mm on-site. This stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X30-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X30-20S replacement — usually within 7-8 hours.