This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X300STC, 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 SI160X300STC
The AirTAC SI160 Standard Cylinder SI160X300STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X300STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X300STC
- 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 SI160X300STC
The AirTAC SI160X300STC is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 300mm stroke. It delivers 10053N push force at 0.5MPa via a G3/4 port. The direct replacement is the SAI160X300STC, which shares the identical ISO 15552 mounting interface, M36x2 thread, and 50mm cushions.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X300STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X300STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X300STC |
| Bore size | Ø160 mm |
| Stroke | 300 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 SAI160X300STC 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 SAI160X300STC 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 SI160X300STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×300 | 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 SI160X300STC Is Used
Heavy Stamping Press
Drives large heavy-duty stamping presses requiring 10053N push force at 0.5MPa, utilizing the 300mm stroke to actuate massive tooling beds.
Automated Welding Fixture
Clamps large structural steel frames in automated welding fixtures, relying on the rigid TC trunnion mount to handle structural side-loads.
Replacing the Airtac SI160 Standard Cylinder SI160X300STC with the SAI160X300STC
To replace the SI160X300STC, order the SAI160X300STC. Confirm the TC trunnion mount, 300mm stroke, G3/4 port, and -S magnet. The SAI is dimensionally interchangeable per ISO 15552. If sizing down, a 125mm bore yields 6136N push at 0.5MPa; sizing up to 200mm yields 15708N. For the 300mm stroke, use an external guide to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The cushion only decelerates near stroke end.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X300STC
- ✓ 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 SI160X300STC FAQ
Yes, the AirTAC SI160X300STC is discontinued. The direct replacement is the SAI160X300STC. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 300mm stroke, G3/4 port, and TC mounting interface.
The 160mm bore delivers 10053N push and 9425N pull at 0.5MPa, 14074N push at 0.7MPa, 18095N push at 0.9MPa, and a theoretical max of 2050kgf at 1.0MPa. Operating speed is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X300STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X300STC replacement — usually within 7-8 hours.