This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X35, 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 SI80X35
The AirTAC SI80 Standard Air Cylinder SI80X35 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 35mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X35, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X35
- 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 SI80X35
The AirTAC SI80X35 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 35 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80X35, which matches the original ISO 15552 mounting interface, 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 and long life. This specific SKU lacks a magnet, so it cannot accept CS1-B or DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X35 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X35 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X35 |
| Bore size | Ø80 mm |
| Stroke | 35 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 SAI80X35 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 SAI80X35 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 SI80X35
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×35 | 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 SI80X35 Is Used
Short-Stroke Clamping
Ideal for holding heavy castings during machining, using the 2513 N push force over a brief 35 mm travel to secure parts firmly.
Package Diverting
Provides robust actuation for heavy-duty diverters on packaging lines, where the short stroke quickly pushes pallets onto secondary tracks.
Pallet Stops
Acts as a high-force end-stop on roller conveyors, arresting heavy pallets reliably within a compact 35 mm spatial envelope.
Replacing the Airtac SI80 Standard Air Cylinder SI80X35 with the SAI80X35
To replace the SI80X35, order the SAI80X35. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G3/8 port thread (PT, G or NPT) and the M20x1.5 rod end. Because this SKU has no -S magnet, it cannot support position sensing; if you need switches, select an SAI80X35S and use current AirTAC sensors. For sizing, the 80 mm bore yields 2513 N push at 0.5 MPa; if less force is needed, a 63 mm bore gives 1559 N, while a 100 mm bore provides 3927 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding consider the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X35
- ✓ 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 SI80X35 FAQ
Yes, the AirTAC SI80X35 is discontinued. The direct replacement is the SAI80X35. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 35 mm stroke, output force, G3/8 port and mounting interface.
This double-acting cylinder uses a G3/8 port and delivers a push force of 2513 N and pull of 2268 N 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.
Request a Quote for the SAI80X35
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X35 replacement — usually within 7-8 hours.