This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X770, 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 SI80X770
The AirTAC SI80 Standard Air Cylinder SI80X770 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 770mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X770, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke770 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X770
- 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 SI80X770
The AirTAC SI80X770 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 770 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. Because the SI line is end-of-life, you should order the SAI80X770 direct replacement. It shares the exact ISO 15552 mounting interface, stroke, output force, and accessories, fitting existing fixtures perfectly.
The SAI upgrade introduces a refined piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept CS1-B/DS1-B sensors. For load holding on air loss, explore the SAIL or BSAI lock variants, as cushions only decelerate.
Airtac SI80 Standard Air Cylinder SI80X770 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X770 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X770 |
| Bore size | Ø80 mm |
| Stroke | 770 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 SAI80X770 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 SAI80X770 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 SI80X770
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×770 | 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 SI80X770 Is Used
Long-Stroke Diverters
Drives large packages across wide conveyor belts using the 770 mm stroke, relying on external guides to prevent rod bending during lateral transfer.
Pallet Handling Gates
Actuates heavy safety gates or lifting stops in automated storage systems where 2513 N of push force at 0.5 MPa easily overcomes friction.
Material Push-Off Stations
Ejects assembled parts from machining centers, utilizing the 36 mm adjustable air cushions at both ends to decelerate the 80 mm bore smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80X770 with the SAI80X770
To replace the discontinued SI80X770, order the SAI80X770. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT), and the M20x1.5 rod-end connection. Since this 770 mm stroke is long, use an external guide to prevent rod bending and side-load damage. Sizing alternatives: drop to a 63 mm bore for lighter loads (1559 N push @0.5 MPa) or step up to 100 mm for higher force (3927 N push @0.5 MPa). This non-magnet SKU cannot host sensors; if position detection is needed, select an SAI80X770S. Remember, standard cushions only decelerate; for secure load holding without live air, specify a SAIL or BSAI lock variant or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X770
- ✓ 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 SI80X770 FAQ
Yes, the SI80X770 is discontinued. The direct replacement is the SAI80X770. It is dimensionally interchangeable per ISO 15552, maintaining the same 80 mm bore, 770 mm stroke, G3/8 port, and 2513 N force. The SAI simply upgrades the piston seal to two Y-shaped elements for lower start-up pressure.
The 80 mm bore features a G3/8 port and an M20x1.5 rod thread. Force output is 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a maximum theoretical force of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAI80X770
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X770 replacement — usually within 7-8 hours.