This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX1500S, 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 SI80BX1500S
The AirTAC SI80 Standard Air Cylinder SI80BX1500S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX1500S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX1500S
- 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 SI80BX1500S
The AirTAC SI80BX1500S is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless steel rod and a 1500 mm stroke. Delivering 2513 N push force at 0.5 MPa, it is replaced by the SAI80BX1500S direct. The SAI upgrade retains the G3/8 port and M20x1.5 thread but adds a two Y-shaped one-way piston seal for low start-up pressure.
The SAI family also introduces SAIL lock, SAIF valve and BSAI clamp-lock variants absent in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI80 Standard Air Cylinder SI80BX1500S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX1500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX1500S |
| Bore size | Ø80 mm |
| Stroke | 1500 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 SAI80BX1500S 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 SAI80BX1500S 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 SI80BX1500S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1500 | 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 SI80BX1500S Is Used
Long-Stroke Material Transfer
Drives heavy pallets across 1500 mm gaps where a robust 2513 N push force at 0.5 MPa is required to overcome initial friction.
Heavy Assembly Press
Moves large jigs into position using the 4523 N push force at 0.9 MPa, relying on adjustable cushions to decelerate the mass.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX1500S with the SAI80BX1500S
To replace this SI80BX1500S, order the SAI80BX1500S to retain the exact ISO 15552 mounting interface, 80 mm bore, 1500 mm stroke, G3/8 port and SUS304 rod. Because this is a 1500 mm stroke, prevent rod bending by using an external guide to absorb side loads. If sizing alternatives, neighbouring bores (63 mm or 100 mm) offer 1559 N or 3927 N push at 0.5 MPa. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX1500S
- ✓ 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 SI80BX1500S FAQ
Yes, the SI80BX1500S is discontinued. The direct replacement is the SAI80BX1500S. It shares the same ISO 15552 mounting interface, 80 mm bore, 1500 mm stroke, output force, G3/8 port and accessories, fitting existing fixtures perfectly.
The G3/8 port feeds a 25 mm rod. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical max of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX1500S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX1500S replacement — usually within 7-8 hours.