This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-20, 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 SIJ63X80-20
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X80-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X80-20
- 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 SIJ63X80-20
The AirTAC SIJ63X80-20 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 20mm on-site, giving a usable 60-80mm extend out of the 80mm nominal maximum. This SIJ is discontinued; the direct replacement is the SAIJ63X80-20, matching the interface, force, and mountings.
The SAIJ upgrade uses 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; use an external rod lock or SAIL/BSAI variant for held loads. This SKU lacks a magnet and cannot take a switch.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-20 |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAIJ63X80-20 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 SAIJ63X80-20 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 SIJ63X80-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SIJ63X80-20 Is Used
Variable Depth Forming
Tune the 60-80mm extend stroke on-site to press parts of varying heights without swapping the entire cylinder.
Adjustable Transfer Diverter
Fine-tune the diverter arm end position by up to 20mm to accommodate different package widths on the line.
Custom Length Stops
Set precise physical end-stops for incoming pallets or materials where fixed 80mm strokes would overrun the target.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20 with the SAIJ63X80-20
To replace the discontinued SIJ63X80-20, order the direct replacement SAIJ63X80-20, reusing your existing FA, LB, or TC ISO 15552 mounts. The 20mm adjust window lets you tune the extend end-position between 60 and 80mm on-site. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors—add external sensing if required. For strokes >=300mm, verify side-load guidance to prevent rod binding. Remember the stop screw is not a lock; for load-holding on air loss, specify an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-20
- ✓ 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 SIJ63X80-20 FAQ
Yes, the SIJ63X80-20 is discontinued. The direct replacement is the SAIJ63X80-20, which shares the identical ISO 15552 interface, 63mm bore, 80mm stroke, 20mm adjust window, G3/8 port, and mounting options. The SAIJ also upgrades to a two Y-shaped one-way piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 20mm on-site, yielding a usable 60-80mm extend out of the 80mm maximum. Note the stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-20 replacement — usually within 7-8 hours.