This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX90, 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 SI80BX90
The AirTAC SI80 Standard Air Cylinder SI80BX90 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 90mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX90, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX90
- 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 SI80BX90
The AirTAC SI80BX90 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 90 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80BX90, matching the bore, stroke, force, port, and ISO 15552 mounting interface exactly.
This SKU features a SUS304 stainless steel rod (-B) and lacks a magnet, so it cannot accept a position switch. The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure.
Airtac SI80 Standard Air Cylinder SI80BX90 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX90 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX90 |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAI80BX90 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 SAI80BX90 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 SI80BX90
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SI80BX90 Is Used
Stainless Rod Clamping
Ideal for packaging or washdown clamping tasks requiring the SUS304 corrosion-resistant rod, utilizing 2513 N of thrust at 0.5 MPa.
Mid-Stroke Diverting
Provides robust 90 mm actuation to divert heavier products on a line, with adjustable 36 mm cushions absorbing end-of-stroke impact.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX90 with the SAI80BX90
To replace the SI80BX90, order the SAI80BX90. Confirm the ISO 15552 mounting fixture, the G3/8 port, and the M20x1.5 rod thread. Because this SKU lacks a magnet (-S), it cannot support sensing; if switches are needed, specify a magnet on the SAI. For sizing, neighbouring bores (63 mm or 100 mm) offer 1559 N or 3927 N at 0.5 MPa. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX90
- ✓ 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 SI80BX90 FAQ
Yes, the SI80BX90 is discontinued. The direct replacement is the SAI80BX90. It shares the same ISO 15552 mounting interface, 80 mm bore, 90 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
It has an 80 mm bore, 90 mm stroke, G3/8 port, and M20x1.5 thread. Force ratings are 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N at 0.9 MPa, and a maximum of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Request a Quote for the SAI80BX90
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX90 replacement — usually within 7-8 hours.