This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1050S, 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 SI80X1050S
The AirTAC SI80 Standard Air Cylinder SI80X1050S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1050mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1050S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1050 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1050S
- 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 SI80X1050S
The AirTAC SI80X1050S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 1050mm stroke. It delivers a push force of 2513 N at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI80X1050S, a direct replacement matching the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade features a revised piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix means this SKU includes a piston magnet for legacy CS1-B/DS1-B sensors. Note that a standard cylinder drifts without live air; for load holding, explore the SAIL or BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X1050S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1050S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1050S |
| Bore size | Ø80 mm |
| Stroke | 1050 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 SAI80X1050S 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 SAI80X1050S 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 SI80X1050S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1050 | 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 SI80X1050S Is Used
Long-Stroke Diversion
Drives large packages across wide conveyor belts over the 1050mm travel distance.
Pallet Handling
Pushes heavy pallets into storage racks using the 2513 N thrust at 0.5 MPa.
Material Lowering
Lowers heavy fixtures with controlled deceleration using the adjustable air cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1050S with the SAI80X1050S
To replace the discontinued SI80X1050S, order the SAI80X1050S. Confirm your ISO 15552 mounting accessory (LB, FA, CA, TC) and thread type (PT, G, NPT) match. The 80mm bore uses a G3/8 port and an M20x1.5 rod thread. Because this is a 1050mm long stroke, external guides are strongly recommended to prevent rod bending and side-load damage. If you need more force than the 2513 N push at 0.5 MPa, step up to a 100mm bore. If you need less, a 63mm bore provides 1559 N. Remember that the air cushion only decelerates the piston; it does not hold load. For secure holding, use an external pilot check valve or the SAIL air-released lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1050S
- ✓ 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 SI80X1050S FAQ
Yes, the SI80X1050S is discontinued. The direct replacement is the SAI80X1050S. It is dimensionally interchangeable per ISO 15552, keeping the same 80mm bore, 1050mm stroke, G3/8 port, and mounting interface.
The G3/8 port feeds a 25mm rod. At 0.5 MPa it pushes 2513 N and pulls 2268 N. 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X1050S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1050S replacement — usually within 7-8 hours.