This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X80-50S, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X80-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X80-50S
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S
The AirTAC SIJ100X80-50S 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 50 mm on-site, yielding a usable 30-80 mm extend out of the 80 mm nominal maximum. The 100 mm bore features a G1/2 port, M20x1.5 rod thread, and 36 mm adjustable air cushions. As the SIJ line is end-of-life, the direct replacement is the SAIJ100X80-50S—retaining the same ISO 15552 mounting interface, bore, force, and adjust window.
The SAIJ successor introduces an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and longer life. Note the external stop sets end position but is not a lock; loads drift on air loss. For held loads, use an external rod lock or the SAIL/BSAI lock variants. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X80-50S |
| Bore size | Ø100 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X80-50S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X80-50S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S Is Used
Press Fit Tuning
Allows precise on-site stroke reduction up to 50 mm when seating bearings, ensuring exact insertion depth without remounting the actuator.
Variable Length Diverter
Adjusts the extend stroke on packaging lines to deflect varying carton sizes, tuning the 80 mm stroke down to 30 mm as needed.
Adjustable End Stop Pusher
Sets a hard mechanical end position for pallet positioning, trimming the extend stroke by up to 50 mm to accommodate different load widths.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S with the SAIJ100X80-50S
To replace the discontinued SIJ100X80-50S, order the direct replacement SAIJ100X80-50S, which preserves the G1/2 port, 50 mm adjust window, and ISO 15552 mounting. Choose the 50 mm adjust window if your assembly requires trimming the 80 mm nominal extend down to a 30 mm minimum on-site. Mounting options include Basic, FA, LB, and TC. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensor accuracy (current AirTAC switches are used on the SAIJ). For strokes >=300 mm, verify side-load limits to prevent guide wear. The stop screw defines end position only; it is not a load lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X80-50S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-50S FAQ
Yes, the SIJ100X80-50S is discontinued. The direct replacement is the SAIJ100X80-50S. It shares the identical ISO 15552 interface, 100 mm bore, 80 mm stroke, 50 mm adjust window, G1/2 port, and mounting options, while adding an upgraded piston seal.
The external stop screw allows trimming the extend stroke by up to 50 mm on-site, giving a usable extend range of 30-80 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X80-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X80-50S replacement — usually within 7-8 hours.