This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X150CB, 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 SI80X150CB
The AirTAC SI80 Standard Air Cylinder SI80X150CB 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 SAI80X150CB, 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 → SAI80X150CB
- 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 SI80X150CB
The AirTAC SI80X150CB is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 150 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI80X150CB, a direct sharing the exact CB clevis mount, M20x1.5 rod thread, and 36 mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This non-magnet SKU cannot hold a sensor; order SAIL or BSAI variants if you need locking.
Airtac SI80 Standard Air Cylinder SI80X150CB Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X150CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X150CB |
| 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 SAI80X150CB 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 SAI80X150CB 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 SI80X150CB
| 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 SI80X150CB Is Used
Press Ejection
Supplies 2513 N of push force at 0.5 MPa to eject formed metal parts from a press bed, utilizing the 150 mm stroke to clear the tooling area.
Package Diversion
Actuates a routing arm on a packaging line to sort heavy cartons, with the CB clevis mount absorbing side-play during high-speed 30-800 mm/s cycling.
Pallet Stopping
Deploys a 150 mm stroke stop block at the end of a roller conveyor to halt inbound pallets, relying on the 80 mm bore for firm, cushioned deceleration.
Replacing the Airtac SI80 Standard Air Cylinder SI80X150CB with the SAI80X150CB
To replace the SI80X150CB, order the SAI80X150CB. Verify your ISO 15552 CB clevis interface, 150 mm stroke, and G3/8 port. This non-magnet SKU cannot accept CS1-B/DS1-B switches. If sizing up or down, adjacent ISO 15552 bores are 63 mm (1559 N push @0.5) and 100 mm (3927 N push @0.5). For load holding on air loss, a plain cylinder drifts; use an external pilot check valve or the SAIL lock variant. The SAI family also adds SAIF valve and BSAI clamp-lock options.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X150CB
- ✓ 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 SI80X150CB FAQ
Yes, the SI80X150CB is discontinued. The direct replacement is the SAI80X150CB. It shares the identical ISO 15552 CB mounting interface, 80 mm bore, 150 mm stroke, output force, and G3/8 port size, fitting existing fixtures perfectly.
The 80 mm bore uses a G3/8 port. Force output is 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, with a theoretical max of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X150CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X150CB replacement — usually within 7-8 hours.