This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X50STC, 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 SI160X50STC
The AirTAC SI160 Standard Cylinder SI160X50STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X50STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X50STC
- 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 SI160X50STC
The AirTAC SI160X50STC is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 50mm stroke. Delivering 10053N push force at 0.5MPa with a G3/4 port, it is replaced by the SAI160X50STC. This direct upgrade matches the original TC trunnion mounting, bore, and output force. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
The -S magnet works with legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC switches. Rod material options include carbon steel, SUS420J2, or SUS304, and a Viton H seal raises the temperature range to 0-150C.
Airtac SI160 Standard Cylinder SI160X50STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X50STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X50STC |
| Bore size | Ø160 mm |
| Stroke | 50 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 SAI160X50STC 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 SAI160X50STC 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 SI160X50STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×50 | 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 SI160X50STC Is Used
Heavy Press Clamping
Applies the 10053N push force at 0.5MPa to secure large industrial components during machining or assembly operations.
Stamping Ejection
Uses the 50mm short stroke and 14074N force at 0.7MPa to eject dense metal parts from press dies rapidly.
Replacing the Airtac SI160 Standard Cylinder SI160X50STC with the SAI160X50STC
To replace the SI160X50STC, order the SAI160X50STC. Verify the ISO 15552 TC trunnion mounting, 50mm stroke, G3/4 port, and the -S magnet for switch sensing. If you need to size both ways, neighboring bores offer different force classes, but at 0.5MPa this 160mm bore yields 10053N push and 9425N pull. A plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The 50mm stroke is short, so side-load rod-bending is minimal, but always ensure guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X50STC
- ✓ 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 SI160X50STC FAQ
Yes, the SI160X50STC is discontinued. The direct replacement is the SAI160X50STC. It matches the original ISO 15552 mounting interface, 160mm bore, 50mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder has a G3/4 port. The force ratings are 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X50STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X50STC replacement — usually within 7-8 hours.