This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X185, 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 SI80X185
The AirTAC SI80 Standard Air Cylinder SI80X185 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 185mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X185, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X185
- 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 SI80X185
The AirTAC SI80X185 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 185 mm stroke. It delivers 2513 N of push force at 0.5 MPa through its G3/8 port. The direct replacement is the SAI80X185, matching the original bore, stroke, output force, and mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI80 Standard Air Cylinder SI80X185 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X185 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X185 |
| Bore size | Ø80 mm |
| Stroke | 185 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 SAI80X185 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 SAI80X185 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 SI80X185
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SI80X185 Is Used
Press Fit Tooling
Drives medium-duty press operations requiring 2513 N of push force at 0.5 MPa to seat bearings and pins reliably.
Pallet Diversion
Actuates heavy diverter arms on packaging lines, utilizing the 185 mm stroke to shift pallets between lanes.
Replacing the Airtac SI80 Standard Air Cylinder SI80X185 with the SAI80X185
To replace the SI80X185, order the SAI80X185. Verify the ISO 15552 mounting interface, the 185 mm stroke, the G3/8 port, and your mounting accessory. Because this specific SKU has no -S magnet, it cannot support position sensing; order a magnet-equipped SAI if switches are needed. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external pilot check valve, or select the SAIL or BSAI lock variants. Since 185 mm is under 300 mm, rod bending is minimal, but always minimize side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X185
- ✓ 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 SI80X185 FAQ
Yes, the SI80X185 is discontinued. The direct replacement is the SAI80X185. It features the same ISO 15552 mounting interface, 80 mm bore, 185 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The 80 mm bore uses a G3/8 port. It generates 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa. Speed range is 30-800 mm/s.
Request a Quote for the SAI80X185
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X185 replacement — usually within 7-8 hours.