This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X125CB, 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 SI80X125CB
The AirTAC SI80 Standard Air Cylinder SI80X125CB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X125CB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X125CB
- 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 SI80X125CB
The AirTAC SI80X125CB is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 125 mm stroke. It delivers 2513 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80X125CB, matching the exact CB clevis mount, M20x1.5 rod thread and 36 mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnet SKU cannot take a sensor, unlike the CS1-B/DS1-B used on -S models.
Airtac SI80 Standard Air Cylinder SI80X125CB Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X125CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X125CB |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAI80X125CB 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 SAI80X125CB 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 SI80X125CB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SI80X125CB Is Used
Press Ejection
Provides 2513 N at 0.5 MPa to eject formed metal parts from heavy stamping dies.
Pallet Diversion
Uses the CB clevis mount to pivot and redirect heavy pallets on a packaging line.
Replacing the Airtac SI80 Standard Air Cylinder SI80X125CB with the SAI80X125CB
To replace the SI80X125CB, order the SAI80X125CB. Verify the ISO 15552 CB clevis mounting interface, 125 mm stroke, G3/8 port and M20x1.5 rod thread. This non-magnet version cannot accept a position switch. Sizing both ways: the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. The plain cylinder does not hold load without air; use an external pilot check valve or the SAIL/BSAI lock variants for hold. Stroke is under 300 mm so rod bending is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X125CB
- ✓ 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 SI80X125CB FAQ
Yes, the SI80X125CB is discontinued. The direct replacement is the SAI80X125CB. It shares the identical ISO 15552 mounting interface, 80 mm bore, 125 mm stroke, G3/8 port and CB clevis, fitting existing fixtures perfectly.
The bore is 80 mm with 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 at 0.9 MPa, and a maximum theoretical force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X125CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X125CB replacement — usually within 7-8 hours.