This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-50, 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 SIJ63X80-50
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50 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 SAIJ63X80-50, 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 → SAIJ63X80-50
- 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 SIJ63X80-50
The AirTAC SIJ63X80-50 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw shortens the extend stroke on-site by up to 50 mm, giving a usable extend range of 30-80 mm from the 80 mm nominal maximum. Because this SIJ model is end-of-life, the direct replacement is the SAIJ63X80-50, matching the ISO 15552 mounting interface, force, and cushioning.
The SAIJ successor retains the upgraded SAI piston seal design with two Y-shaped one-way elements for low start-up pressure and long life. Note this non-SKU lacks a magnet and cannot accept a switch; additionally, the stop screw sets end position but is not a load lock, so an external rod lock or SAIL variant is required to hold loads on air loss.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-50 |
| 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 SAIJ63X80-50 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 SAIJ63X80-50 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 SIJ63X80-50
| 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 SIJ63X80-50 Is Used
Variable Pitch Forming
Allows operators to tune the extend stroke on-site for different material thicknesses without swapping the entire actuator.
Adjustable Transfer Stops
Provides a physical end-stop that can be fine-tuned by up to 50 mm to accommodate changing package sizes on a sorting line.
Custom Crate Positioning
Delivers precise push positioning where the final extend point must be dialed in manually during commissioning.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-50 with the SAIJ63X80-50
To replace the discontinued SIJ63X80-50, order the direct replacement SAIJ63X80-50, which preserves the G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. Choose the 50 mm adjust window if your process requires trimming the extend stroke anywhere from 30 to 80 mm on-site. Mounting attachments FA, LB, or TC can be reused directly. Since this specific SKU lacks the -S suffix, it has no magnet and cannot support legacy CS1-B or DS1-B sensors. For stroke lengths of 300 mm or greater, carefully verify side-load limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-50
- ✓ 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 SIJ63X80-50 FAQ
Yes, the SIJ63X80-50 is discontinued. The direct replacement is the SAIJ63X80-50, which matches the ISO 15552 interface, bore, stroke, and G3/8 port.
The external stop screw allows you to shorten the extend stroke by up to 50 mm on-site, but it only sets the end position and does not lock the load.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-50 replacement — usually within 7-8 hours.