This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX140S, 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 SI80AX140S
The AirTAC SI80 Standard Air Cylinder SI80AX140S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 140mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX140S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX140S
- 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 SI80AX140S
The AirTAC SI80AX140S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 140 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80AX140S, sharing the same interface, force, and mounting. This unit features a SUS420J2 stainless rod and a piston magnet for CS1-B/DS1-B sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure. The SAI family also adds SAIL lock, SAIF valve, and BSAI clamp variants. Remember, a plain cylinder drifts without live air; use SAIL or an external rod lock for holding.
Airtac SI80 Standard Air Cylinder SI80AX140S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX140S |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAI80AX140S 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 SAI80AX140S 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 SI80AX140S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SI80AX140S Is Used
Mid-Tonnage Pressing
Applies 2513 N of push force at 0.5 MPa for seating bearings or light stamping tasks in automated machinery.
Package Diversion
Uses the 140 mm stroke to actuate routing gates on packaging lines, handling loads up to a 1508 N safe working threshold.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX140S with the SAI80AX140S
To replace the SI80AX140S, order the SAI80AX140S. Confirm the ISO 15552 mounting interface, the 140 mm stroke, the G3/8 port, and your mounting accessory. The -S magnet enables current AirTAC switches, replacing legacy CS1-B/DS1-B sensors. The -A rod is SUS420J2 stainless steel. At 0.5 MPa it yields 2513 N push; neighboring bores offer 63 mm (1559 N) or 100 mm (3927 N). A plain cylinder does not hold load without air; for load holding, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX140S
- ✓ 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 SI80AX140S FAQ
Yes, the SI80AX140S is discontinued. The direct replacement is the SAI80AX140S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 140 mm stroke, 2513 N force, G3/8 port, and mounting interface.
It has a 25 mm rod, M20x1.5 thread, 36 mm cushion, and 30-800 mm/s speed. Force ratings are 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 max force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX140S replacement — usually within 7-8 hours.