This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X80H, 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 SI80X80H
The AirTAC SI80 Standard Air Cylinder SI80X80H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X80H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X80H
- 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 SI80X80H
The AirTAC SI80X80H is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 80 mm stroke. It delivers 2513 N push force at 0.5 MPa and uses a G3/8 port. The direct replacement is the SAI80X80H, which matches the ISO 15552 mounting interface, bore, stroke, output force and port size exactly. This SKU features a Viton H high-temperature seal (0 to 150 C) but lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor.
The SAI upgrade introduces an improved piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For load-holding, note that a standard cylinder drifts without live air; the cushion only decelerates. Use the SAIL or BSAI lock variants, or an external pilot check valve.
Airtac SI80 Standard Air Cylinder SI80X80H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X80H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X80H |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80X80H 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 SAI80X80H 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 SI80X80H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SI80X80H Is Used
High-Temperature Forming
Ideal for clamping parts in hot environments up to 150 C using the Viton H seal, providing 2513 N of reliable push force at 0.5 MPa.
Mid-Stroke Actuation
Handles 80 mm travel sequences in automated machining fixtures where a robust 80 mm bore and G3/8 porting deliver steady thrust.
Heavy Transfer Diverting
Pushes heavy goods on assembly lines, safely managing a 1508 N working load while benefiting from adjustable 36 mm end cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X80H with the SAI80X80H
To replace the discontinued SI80X80H, order the SAI80X80H. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 80 mm stroke, 2513 N force at 0.5 MPa, G3/8 port, M20x1.5 rod thread and 36 mm cushions. Because this specific SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, select an SAI model with the S suffix. You can size both ways: drop to a 63 mm bore for 1559 N push at 0.5 MPa, or step up to 100 mm for 3927 N. The Viton H seal provides 0 to 150 C heat resistance. For holding loads without air, choose the SAIL or BSAI lock variant, or add an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X80H
- ✓ 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 SI80X80H FAQ
Yes, the AirTAC SI80X80H is discontinued. The direct replacement is the SAI80X80H. It shares the identical ISO 15552 mounting interface, 80 mm bore, 80 mm stroke, port size and force, fitting directly into existing fixtures.
The 80 mm bore cylinder has a G3/8 port, a 25 mm rod, M20x1.5 thread, 36 mm cushions, and operates at 30-800 mm/s. Force ratings are 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a maximum theoretical force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X80H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X80H replacement — usually within 7-8 hours.