This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1720STC, 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 SI160X1720STC
The AirTAC SI160 Standard Cylinder SI160X1720STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1720mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1720STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1720 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1720STC
- 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 SI160X1720STC
The AirTAC SI160X1720STC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 1720 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. Because 1720 mm exceeds the 1500 mm standard maximum, this is a non-standard, made-to-order stroke. The direct replacement is the SAI160X1720STC, sharing the exact ISO 15552 mounting interface, bore, stroke, force, port and TC trunnion mount.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. This -S model retains a piston magnet for legacy CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches.
Airtac SI160 Standard Cylinder SI160X1720STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1720STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1720STC |
| Bore size | Ø160 mm |
| Stroke | 1720 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 SAI160X1720STC 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 SAI160X1720STC 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 SI160X1720STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1720 | 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 SI160X1720STC Is Used
Heavy Material Transfer
Drives large-scale automated conveyors and heavy pallet shuttles, utilizing the 10053 N push force at 0.5 MPa to shift substantial loads across plant floors.
Long-Stroke Pressing
Executes deep pressing and forming operations over extended distances, where the 1720 mm stroke and 14074 N force at 0.7 MPa are essential for reaching the workpiece.
High-Reach Actuation
Actuates heavy lifting platforms and elevated storage mechanisms, taking advantage of the 512 kg vertical lift capacity and TC trunnion mounting for pivot alignment.
Replacing the Airtac SI160 Standard Cylinder SI160X1720STC with the SAI160X1720STC
To replace the SI160X1720STC, order the SAI160X1720STC. Confirm the ISO 15552 TC trunnion mounting, 160 mm bore, 1720 mm non-standard stroke, G3/4 port, and the -S magnet. When sizing, a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore provides 15708 N. At 0.7 MPa this 160 mm bore outputs 14074 N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, specify an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 1720 mm stroke demands external guides to prevent rod bending and severe side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1720STC
- ✓ 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 SI160X1720STC FAQ
Yes, the SI160X1720STC is discontinued. The direct replacement is the SAI160X1720STC. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 1720 mm stroke, G3/4 port, TC mount, and output force.
This double-acting cylinder uses a G3/4 port. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X1720STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1720STC replacement — usually within 7-8 hours.