This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX150H, 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 SI80BX150H
The AirTAC SI80 Standard Air Cylinder SI80BX150H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX150H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX150H
- 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 SI80BX150H
The AirTAC SI80BX150H is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 150mm stroke, Viton H high-temperature seals (0-150C), and a SUS304 stainless steel rod. Delivering 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80BX150H. This direct successor matches the interface, bore, stroke, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors. The SAI family also adds SAIL, SAIF, and BSAI variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80BX150H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX150H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX150H |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAI80BX150H 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 SAI80BX150H 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 SI80BX150H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SI80BX150H Is Used
High-Temperature Forming
Drives press and forming tooling in heated zones up to 150C, utilizing the Viton H seals and SUS304 rod for reliable 2513N actuation without corrosion.
Heavy Transfer Diverters
Pushes loaded pallets or heavy workpieces along transfer lines, safely handling a 1508N working load within the 80mm bore's 30-800mm/s speed range.
Rugged Clamping Fixtures
Secures heavy metal components during machining operations, relying on the 36mm adjustable air cushions to decelerate the 150mm stroke smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX150H with the SAI80BX150H
To replace the SI80BX150H, order the SAI80BX150H. It drops into existing fixtures per the ISO 15552 mounting interface, keeping the 80mm bore, 150mm stroke, 2513N force, G3/8 port, and mounting accessories. If you need more force, the neighboring 100mm bore provides 3927N at 0.5MPa; if less is required, the 63mm bore offers 1559N. Note that this specific SKU lacks a magnet, so it cannot support position sensing. The standard cylinder does not hold load on air loss; for that, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. The -B rod provides SUS304 corrosion resistance, and the -H seal handles high heat.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX150H
- ✓ 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 SI80BX150H FAQ
Yes, the SI80BX150H is discontinued. The direct replacement is the SAI80BX150H. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the 80mm bore, 150mm stroke, 2513N force, G3/8 port, and mounting. The SAI uses an upgraded piston seal and adds SAIL, SAIF, and BSAI variants.
The G3/8 port feeds a 25mm rod. Force ratings are 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. The cylinder operates at 30-800mm/s. Note that the cushion only decelerates; it does not hold load without live air.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX150H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX150H replacement — usually within 7-8 hours.