This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X80-10, 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 SIJ50X80-10
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X80-10 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 SAIJ50X80-10, 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 → SAIJ50X80-10
- 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 SIJ50X80-10
The AirTAC SIJ50X80-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 50 mm bore and 80 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 70-80 mm forward travel. As an end-of-life product, the direct replacement is the SAIJ50X80-10, which preserves the exact ISO 15552 mounting interface, bore, force, and adjust window.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. This non-magnet SKU (no -S suffix) cannot accept a reed switch. Note that the external stop screw sets the end position but is not a load lock; the cylinder will drift on air loss, so use an external rod lock or check valve for held loads.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-10 Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X80-10 |
| 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 SAIJ50X80-10 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 SAIJ50X80-10 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 SIJ50X80-10
| 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 SIJ50X80-10 Is Used
Press Fit Calibration
Trimming the 80 mm extend stroke by up to 10 mm on-site allows operators to dial in the exact bottoming position for light-duty press fits without re-engineering the fixture.
Sorting Diverter End-Position Tuning
Adjusting the forward stop by 10 mm accommodates varying package sizes on a sorting line, ensuring the diverter finger reaches the precise extended location for each SKU.
Sealing Head Height Compensation
The external stop screw provides a 70-80 mm usable stroke window to compensate for minor carton height variations, setting the exact sealing head downstroke without adding mechanical spacers.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X80-10 with the SAIJ50X80-10
To replace the discontinued SIJ50X80-10, order the direct replacement SAIJ50X80-10, which shares the identical ISO 15552 dimensions, G1/4 port, and FA/LB/TC mount compatibility. The -10 mm adjust window is ideal for fine-tuning the 70-80 mm extend stroke on-site without machining spacers. Because this SKU lacks the -S magnet, it cannot support position sensing; if sensing is required, select a magnet-equipped model. For any stroke length, ensure the rod-end thread (M16x1.5) is aligned to handle side loads, and never rely on the stop screw or air cushion to hold a load vertically without a pilot-operated check valve or external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X80-10
- ✓ 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 SIJ50X80-10 FAQ
Yes, the SIJ50X80-10 is discontinued. The direct replacement is the SAIJ50X80-10. It shares the same ISO 15552 interface, 50 mm bore, 80 mm stroke, 10 mm adjust window, G1/4 port, and mounting options, but features an upgraded piston seal for longer life.
This double-acting double-rod cylinder has a 10 mm adjust window (usable extend stroke 70-80 mm). It uses a G1/4 port and operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X80-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X80-10 replacement — usually within 7-8 hours.