This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-50S, 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 SIJ63X80-50S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50S 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 SAIJ63X80-50S, 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 → SAIJ63X80-50S
- 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 SIJ63X80-50S
The AirTAC SIJ63X80-50S 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 50mm on-site, giving a usable 30-80mm extend window from the 80mm nominal maximum. Because SIJ is end-of-life, the direct replacement is the SAIJ63X80-50S, retaining the same interface, force, and mounting.
The SAIJ successor upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; use an external rod lock or SAIL/BSAI variant to hold loads on air loss.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-50S |
| 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 SAIJ63X80-50S 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 SAIJ63X80-50S 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 SIJ63X80-50S
| 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 SIJ63X80-50S Is Used
Variable Depth Drilling
Tune the extend stroke on-site to match different material thicknesses without swapping cylinders.
Adjustable Diverter Arm
Trim the extend stop by up to 50mm to deflect varying package sizes accurately on a packaging line.
Tiered Pallet Stops
Set precise end positions for multiple pallet heights using the external stop screw window.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50S with the SAIJ63X80-50S
To replace the discontinued SIJ63X80-50S, order the SAIJ63X80-50S direct (insert A after S). It matches the 63mm bore, 80mm nominal stroke, 50mm adjust window, and G3/8 port. Choose the 50mm adjust window if you need to trim the extend stroke down to 30mm on-site. Mounting interfaces (Basic, FA, LB, TC) are ISO 15552. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. For strokes >=300mm, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-50S
- ✓ 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 SIJ63X80-50S FAQ
Yes, the SIJ63X80-50S is discontinued. The direct replacement is the SAIJ63X80-50S, offering the same ISO 15552 interface, 63mm bore, 80mm stroke, 50mm adjust window, and G3/8 port.
The external stop screw trims the extend stroke by up to 50mm, giving a 30-80mm usable window. The stop sets position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-50S replacement — usually within 7-8 hours.