This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X115S, 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 SI80X115S
The AirTAC SI80 Standard Air Cylinder SI80X115S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 115mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X115S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X115S
- 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 SI80X115S
The AirTAC SI80X115S is a discontinued double-acting ISO 15552 profile cylinder with a 115 mm stroke, delivering 2513 N push and 2268 N pull at 0.5 MPa through its G3/8 port. AirTAC replaced this legacy unit with the SAI80X115S, a direct sharing the exact ISO 15552 mounting interface, bore, force and accessories. The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. For position sensing, your -S suffix indicates a piston magnet compatible with legacy CS1-B/DS1-B switches, while the SAI replacement uses current AirTAC sensors.
The SAI family also introduces variants the SI line lacked, such as the SAIL air-released lock and BSAI clamp-lock for load holding, plus the SAIF model with a built-in 4M valve for bores up to 100. Note that a standard cylinder drifts without live air; the adjustable 36 mm cushions only decelerate near stroke end.
Airtac SI80 Standard Air Cylinder SI80X115S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X115S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X115S |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAI80X115S 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 SAI80X115S 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 SI80X115S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SI80X115S Is Used
Package Diverting
Actuates routing gates on high-speed packaging lines, using the 115 mm stroke to shift heavy cartons reliably between adjacent belt lanes.
Pallet Stopping
Deploys heavy-duty end stops at gravity roller conveyors to halt incoming pallets, leveraging the 2513 N push force to absorb kinetic impact safely.
Press Clamping
Secures mild steel workpieces inside machining centers, providing the stable 128 kg vertical holding margin required for aggressive milling operations.
Replacing the Airtac SI80 Standard Air Cylinder SI80X115S with the SAI80X115S
To replace the SI80X115S, order the SAI80X115S direct. Confirm your ISO 15552 mounting accessory (LB foot, FA flange, TC trunnion, etc.), the G3/8 port thread (PT/G/NPT), and the -S magnet requirement. Sizing both ways: this 80 mm bore yields 2513 N push at 0.5 MPa; if you need less force, the 63 mm bore offers 1559 N, and the 100 mm bore provides 3927 N. Because the stroke is 115 mm, side-load and rod-bending risks are minimal, but always ensure proper guide alignment. A plain cylinder does not hold load on air loss—the cushion only decelerates. For secure holding, use an external pilot check valve, a rod lock, or switch to the SAIL/BSAI lock variants. Rod material options include carbon steel, SUS420J2 (A), and SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X115S
- ✓ 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 SI80X115S FAQ
Yes, the SI80X115S is discontinued. The direct replacement is the AirTAC SAI80X115S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 115 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly while upgrading the piston seal.
The 80 mm bore features a G3/8 port and provides 2513 N push and 2268 N pull at 0.5 MPa. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa. Speed ranges from 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X115S replacement — usually within 7-8 hours.