This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75TC, 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 SI80X75TC
The AirTAC SI80 Standard Air Cylinder SI80X75TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X75TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X75TC
- 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 SI80X75TC
The AirTAC SI80X75TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 75 mm stroke. It delivers 2513 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI80X75TC, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. For applications needing load holding on air loss, the new SAI family introduces SAIL and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X75TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75TC |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAI80X75TC 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 SAI80X75TC 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 SI80X75TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SI80X75TC Is Used
Package Diverting
Drives diverter arms on sorting lines, utilizing the 2513 N push force to redirect heavy cartons reliably at high speeds.
Pallet Stopping
Acts as a robust end-stop for inbound pallets on roller conveyors, absorbing kinetic energy with its adjustable air cushion.
Clamp Actuation
Secures large workpieces in machining fixtures, providing consistent clamping pressure throughout automated tooling cycles.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75TC with the SAI80X75TC
To replace the SI80X75TC, order the SAI80X75TC. Verify the TC trunnion mount, G3/8 port, and M20x1.5 rod thread match your existing fixture. This 80 mm bore outputs 2513 N push at 0.5 MPa; if undersized, the 100 mm bore yields 3927 N, or if oversized, the 63 mm bore provides 1559 N. Note that this SKU lacks a magnet (-S) and cannot accept CS1-B/DS1-B sensors. A plain cylinder drifts on air loss since the 36 mm cushion only decelerates; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant. The 75 mm stroke is short, so rod-bending side loads are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75TC
- ✓ 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 SI80X75TC FAQ
Yes, the SI80X75TC is discontinued. The direct replacement is the SAI80X75TC. It shares the identical ISO 15552 mounting interface, 80 mm bore, 75 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The G3/8 port feeds an 80 mm bore that generates 2513 N push and 2268 N pull at 0.5 MPa. At 0.7 MPa push is 3518 N, and 4523 N at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa, operating at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X75TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75TC replacement — usually within 7-8 hours.