This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X550-100S, 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 550mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X550-100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X550-100S
- 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S
The AirTAC SIJ80X550-100S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. It uses an external stop screw to trim the extend stroke by up to 100 mm on-site, yielding a usable 450-550 mm window from the 550 mm nominal maximum. This SIJ model is discontinued; the direct replacement is the SAIJ80X550-100S, retaining the exact ISO 15552 interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; drift occurs on air loss. For held loads, use an external rod lock or the SAIL/BSAI lock variants. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X550-100S |
| Bore size | Ø80 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 SAIJ80X550-100S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X550-100S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S Is Used
Variable Press Stroke
Allows operators to tune the extend stroke on-site by up to 100 mm for pressing assemblies of varying heights without swapping cylinders.
Adjustable Diverter
Field-trims the pusher stroke between 450 and 550 mm to accommodate changing package widths on a sorting line.
Tiered Pallet Stops
Sets precise end positions for different pallet stack heights, using the external stop to shorten the extend reach as needed.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S with the SAIJ80X550-100S
To replace the discontinued SIJ80X550-100S, order the direct replacement SAIJ80X550-100S, keeping the 550 mm nominal stroke and 100 mm adjust window. Choose the 100 mm adjust window if your field stroke tuning requires trimming the extend by up to 100 mm. Mounting reuse includes Basic, FA, LB, and TC interfaces. The -S suffix ensures a piston magnet is present for switch sensing. Because the 550 mm stroke is long, verify side-load limits and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X550-100S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X550-100S FAQ
Yes, the SIJ80X550-100S is discontinued. The direct replacement is the SAIJ80X550-100S. It shares the same ISO 15552 interface, 80 mm bore, 550 mm stroke, 100 mm adjust window, G3/8 port, and mounting options, but uses an upgraded piston seal.
The theoretical max is 513 kgf at 1.0 MPa. The external stop screw allows trimming the extend stroke by up to 100 mm on-site, yielding a 450-550 mm usable window. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X550-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X550-100S replacement — usually within 7-8 hours.