This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X80-30, 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 80mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ50X80-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ50X80-30
- 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30
The AirTAC SIJ50X80-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 30mm on-site (usable 50-80mm). The direct replacement is the SAIJ50X80-30, reusing your existing mounts.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The stop sets end position but is not a lock; use SAIL or BSAI for held loads.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30 Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X80-30 |
| Bore size | Ø50 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ50X80-30 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAIJ50X80-30 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30 Is Used
Variable Stroke Clamping
Adjustable end-position clamping of varying part widths without swapping cylinders.
Variable Transfer Diverter
Tuning the extend stroke on-site to deflect different package sizes accurately.
Adjustable End Stops
Setting precise extend endpoints for multiple product formats on one line.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30 with the SAIJ50X80-30
Replace the SIJ50X80-30 directly with the SAIJ50X80-30, retaining the 30mm adjust window and ISO 15552 mounting. Choose FA, LB, or TC mounts. This SKU lacks the -S magnet and cannot take a switch. For strokes >=300mm, verify side-load guidance.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X80-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-30 FAQ
Yes, the SIJ50X80-30 is discontinued. The direct replacement is the SAIJ50X80-30, offering the same ISO 15552 interface, 80mm stroke, 30mm adjust window, and G1/4 port.
The external stop screw provides a 30mm adjust window (usable extend 50-80mm). The stop sets position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X80-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X80-30 replacement — usually within 7-8 hours.