This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1070S, 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 SI80X1070S
The AirTAC SI80 Standard Air Cylinder SI80X1070S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1070mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1070S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1070 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1070S
- 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 SI80X1070S
The AirTAC SI80X1070S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 1070mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI80X1070S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Because the 1070mm stroke exceeds the 80mm bore's 1000mm standard limit, it is built as a non-standard stroke. The original SI-SKU includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI replacement uses current AirTAC switches. The standard configuration uses a carbon steel rod, but SUS420J2 (A) or SUS304 (B) options are available. Note that a plain cylinder drifts on air loss; the air cushion only decelerates near stroke end. For load holding, explore the SAIL or BSAI lock variants, or use an external rod lock.
Airtac SI80 Standard Air Cylinder SI80X1070S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1070S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1070S |
| Bore size | Ø80 mm |
| Stroke | 1070 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 SAI80X1070S 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 SAI80X1070S 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 SI80X1070S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1070 | 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 SI80X1070S Is Used
Long-Stroke Material Transfer
Drives heavy pallets across extended automated packaging lines where the 2513 N push force at 0.5 MPa easily overcomes rolling friction over the 1070 mm travel distance.
Large Fixture Actuation
Positions heavy welding or machining fixtures, relying on the rigid ISO 15552 extruded aluminum profile barrel to maintain alignment under demanding industrial loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1070S with the SAI80X1070S
To replace the discontinued SI80X1070S, order the SAI80X1070S. Verify your ISO 15552 mounting fixtures (LB, FA, FB, CA, CB, TC), the G3/8 air port, and the M20x1.5 rod thread. The -S suffix confirms the magnet is present for legacy CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. When sizing, a neighboring 63mm bore yields 1559 N push at 0.5 MPa, while a 100mm bore provides 3927 N. Because the 1070mm stroke is non-standard and exceeds the 1000mm standard maximum, carefully manage side loads to prevent rod bending by incorporating external guides. A plain double-acting cylinder does not hold load without live air; the cushion only decelerates. For secure holding, use an external pilot check valve, a rod lock, or the SAIL/BSAI lock variants. The SAIF variant with a built-in 4M valve is also available for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1070S
- ✓ 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 SI80X1070S FAQ
Yes, the SI80X1070S is discontinued. The direct replacement is the SAI80X1070S. It is dimensionally interchangeable per the ISO 15552 mounting interface, keeping the same 80mm bore, 1070mm stroke, output force, G3/8 port, and mounting accessories.
This double-acting cylinder uses a G3/8 port and delivers a push force of 2513 N and a pull force of 2268 N at 0.5 MPa. At 0.7 MPa the push force 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 SAI80X1070S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1070S replacement — usually within 7-8 hours.