This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X80STC, 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 SI160 Standard Cylinder SI160X80STC
The AirTAC SI160 Standard Cylinder SI160X80STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 80mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X80STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke80 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X80STC
- 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 SI160 Standard Cylinder SI160X80STC
The AirTAC SI160X80STC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke, delivering 10053 N push force at 0.5 MPa. It features a G3/4 port, a 40 mm piston rod, and a TC trunnion mount. AirTAC replaced this legacy unit with the SAI160X80STC, a direct sharing the exact ISO 15552 mounting interface, bore, and output force.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The -S magnet supports CS1-B/DS1-B sensors, while a Viton H seal option raises operating temps to 150 C.
Airtac SI160 Standard Cylinder SI160X80STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X80STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X80STC |
| Bore size | Ø160 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160X80STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X80STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X80STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | 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 SI160 Standard Cylinder SI160X80STC Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring 10053 N thrust at 0.5 MPa, utilizing the TC trunnion to handle pivoting loads.
Automated Clamp Actuation
Actuates heavy-duty clamping arms on large welding beds, relying on the 50 mm adjustable air cushions to decelerate the 40 mm rod.
Replacing the Airtac SI160 Standard Cylinder SI160X80STC with the SAI160X80STC
To replace the SI160X80STC, order the SAI160X80STC and confirm the ISO 15552 TC trunnion mount, 80 mm stroke, G3/4 port, and -S magnet. Sizing both ways: dropping to bore 125 lowers force to 6136 N push @0.5 MPa, while increasing to bore 200 yields 15708 N. Note that a plain cylinder drifts on air loss; the air cushion only decelerates near stroke end. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve (bores 32-100) which this SI lacked.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X80STC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X80STC FAQ
Yes, the SI160X80STC is discontinued. The direct replacement is the SAI160X80STC. It shares the identical ISO 15552 mounting interface, 160 mm bore, 80 mm stroke, output force, G3/4 port, and TC trunnion mount, fitting directly into existing fixtures.
The G3/4 port feeds a 40 mm rod delivering 10053 N push and 9425 N pull at 0.5 MPa. At 0.7 MPa push is 14074 N, and 18095 N at 0.9 MPa. The theoretical max force is 2050 kgf at 1.0 MPa, operating at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X80STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X80STC replacement — usually within 7-8 hours.