This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X70TC, 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 SI80X70TC
The AirTAC SI80 Standard Air Cylinder SI80X70TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 70mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X70TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke70 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X70TC
- 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 SI80X70TC
The AirTAC SI80X70TC is a discontinued double-acting ISO 15552 profile cylinder with a 70 mm stroke. It delivers 2513 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80X70TC, which retains the exact TC trunnion mounting, M20x1.5 rod thread, and 36 mm cushions.
This SAI upgrade introduces a two-piece Y-shaped piston seal for low start-up pressure and extended life. Note that this specific SI SKU lacks a magnet, so it cannot accept CS1-B or DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X70TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X70TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X70TC |
| Bore size | Ø80 mm |
| Stroke | 70 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 SAI80X70TC 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 SAI80X70TC 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 SI80X70TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×70 | 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 SI80X70TC Is Used
Mid-Tonnage Pressing
Applies the 2513 N push force at 0.5 MPa for seating bearings or light stamping tasks within automated machinery.
Package Diversion
Drives a 70 mm stroke diverter arm to route heavy cartons on a packaging line using the TC trunnion mount.
Replacing the Airtac SI80 Standard Air Cylinder SI80X70TC with the SAI80X70TC
To replace the SI80X70TC, order the SAI80X70TC and confirm the ISO 15552 TC trunnion interface, 80 mm bore, 70 mm stroke, and G3/8 port. Because this non-magnet SKU cannot host a sensor, order an -S variant if switch tracking via current AirTAC switches is required. For sizing alternatives, an adjacent 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore offers 3927 N. Remember that a standard cylinder drifts without live air; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X70TC
- ✓ 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 SI80X70TC FAQ
Yes, the SI80X70TC is discontinued. The direct replacement is the SAI80X70TC. It features the same ISO 15552 mounting interface, 80 mm bore, 70 mm stroke, G3/8 port, and TC trunnion mount, but adds an upgraded two-piece Y-shaped piston seal for longer life.
This double-acting cylinder uses a G3/8 port and a 25 mm rod. It provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X70TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X70TC replacement — usually within 7-8 hours.