This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX700STC, 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 SI80BX700STC
The AirTAC SI80 Standard Air Cylinder SI80BX700STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX700STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX700STC
- 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 SI80BX700STC
The AirTAC SI80BX700STC is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless steel rod and a TC trunnion mount. Delivering 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the SAI80BX700STC.
This SAI direct maintains the exact ISO 15552 mounting dimensions, 700 mm stroke, and force. The upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure. The SAI family also adds SAIL, SAIF, and BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80BX700STC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX700STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX700STC |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAI80BX700STC 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 SAI80BX700STC 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 SI80BX700STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SI80BX700STC Is Used
Long-Stroke Diversion
Ideal for pushing heavy pallets sideways on a conveyor over a 700 mm travel distance, utilizing the 2513 N thrust at 0.5 MPa.
Stainless Material Handling
The SUS304 rod option suits washdown or mildly corrosive logistics environments where standard carbon steel rods would degrade.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX700STC with the SAI80BX700STC
To replace the SI80BX700STC, order the SAI80BX700STC. Confirm the ISO 15552 TC trunnion interface, 80 mm bore, 700 mm stroke, G3/8 port, and the -S magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). The -B SUS304 rod is standard here. Sizing both ways: the 80 mm bore gives 2513 N push at 0.5 MPa, while the neighboring 63 mm bore offers 1559 N. For this 700 mm stroke, use an external guide to prevent rod bending and side loads. A plain cylinder drifts on air loss; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX700STC
- ✓ 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 SI80BX700STC FAQ
Yes, the SI80BX700STC is discontinued. The direct replacement is the SAI80BX700STC. It is dimensionally interchangeable per ISO 15552, retaining the same TC trunnion mount, 80 mm bore, 700 mm stroke, G3/8 port, and force ratings.
This double-acting cylinder has a G3/8 port, M20x1.5 rod thread, and 36 mm cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical max of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX700STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX700STC replacement — usually within 7-8 hours.