This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX5, 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 SI80BX5
The AirTAC SI80 Standard Air Cylinder SI80BX5 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 5mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX5, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke5 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX5
- 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 SI80BX5
The AirTAC SI80BX5 is a discontinued double-acting ISO 15552 profile cylinder with a 5 mm stroke and SUS304 stainless steel rod. Delivering 2513 N push force at 0.5 MPa, it is replaced by the SAI80BX5. This direct upgrade matches the bore, stroke, G3/8 port and ISO 15552 mounting interface, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. This non-magnet SKU cannot take a sensor. For load holding, use SAIL or BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80BX5 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX5 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX5 |
| Bore size | Ø80 mm |
| Stroke | 5 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 SAI80BX5 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 SAI80BX5 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 SI80BX5
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×5 | 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 SI80BX5 Is Used
Short-Stroke Clamping
Ideal for high-force brief clamping tasks in machining fixtures, utilizing the 2513 N push at 0.5 MPa within a tight 5 mm travel.
Corrosive Ejecting
The SUS304 stainless rod excels in ejecting parts from wash baths or chemical lines where moisture would damage standard carbon rods.
Holding Rigs
Provides rigid positioning in automated welding cells, though an external rod lock is required if the rig must hold position during air loss.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX5 with the SAI80BX5
To replace the SI80BX5, order the SAI80BX5 direct. Verify the ISO 15552 mounting interface, 80 mm bore, 5 mm stroke, G3/8 port, and SUS304 rod. This 5 mm stroke is nonstandard. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. This plain cylinder drifts without air; for load holding use an external pilot check valve or the SAIL/BSAI lock variant. Note: no magnet means no sensing.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX5
- ✓ 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 SI80BX5 FAQ
Yes, the AirTAC SI80BX5 is discontinued. The direct replacement is the SAI80BX5. It shares the same ISO 15552 mounting interface, 80 mm bore, 5 mm stroke, G3/8 port, and force ratings, fitting directly into existing machinery.
The 80 mm bore has a Ø25 mm rod, M20x1.5 thread, G3/8 port, and 36 mm cushion. Forces are 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a max of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Request a Quote for the SAI80BX5
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX5 replacement — usually within 7-8 hours.