This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X290H, 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 SI80 Standard Air Cylinder SI80X290H
The AirTAC SI80 Standard Air Cylinder SI80X290H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 290mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X290H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X290H
- 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 SI80 Standard Air Cylinder SI80X290H
The AirTAC SI80X290H is a discontinued double-acting ISO 15552 profile cylinder with a 290 mm stroke and a high-temperature Viton H seal. Generating 2513 N push and 2268 N pull at 0.5 MPa through its G3/8 port, it is replaced by the SAI80X290H. This direct successor shares the exact ISO 15552 mounting interface, bore, and force ratings.
The SAI upgrade features a redesigned piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this non-magnetic SKU cannot accept a sensor; if load holding is required, use an external rod lock or the SAIL/BSAI lock variants, as cushions only decelerate.
Airtac SI80 Standard Air Cylinder SI80X290H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X290H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X290H |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAI80X290H 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 SAI80X290H produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI80 Standard Air Cylinder SI80X290H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SI80 Standard Air Cylinder SI80X290H Is Used
High-Temperature Forming Press
Actuates clamping and forming dies in hot environments up to 150 C using the Viton H seal, providing 2513 N push force at 0.5 MPa.
Replacing the Airtac SI80 Standard Air Cylinder SI80X290H with the SAI80X290H
To replace the SI80X290H, order the SAI80X290H. Verify the ISO 15552 mounting interface, the G3/8 port, and the M20x1.5 rod thread. Because this is a non-magnet SKU, it cannot accept legacy CS1-B/DS1-B sensors. If you need position sensing, select an SAI model with the magnet option. For loads needing holding on air loss, a plain cylinder drifts; choose the SAIL or BSAI lock variant, or add a pilot check valve. At 290 mm stroke, guide the load to prevent rod bending and side-load wear. Neighbouring bores: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X290H
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI80 Standard Air Cylinder SI80X290H FAQ
Yes, the SI80X290H is discontinued. The direct replacement is the SAI80X290H. It is dimensionally interchangeable per the ISO 15552 mounting interface, keeping the same 80 mm bore, 290 mm stroke, G3/8 port, and force ratings.
It features a G3/8 air port and provides 2513 N push and 2268 N pull at 0.5 MPa. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X290H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X290H replacement — usually within 7-8 hours.