This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X730, 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 SI160X730
The AirTAC SI160 Standard Cylinder SI160X730 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 730mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X730, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke730 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X730
- 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 SI160X730
The AirTAC SI160X730 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 730mm stroke. Built with an extruded aluminum barrel, it delivers 10053 N of push force at 0.5 MPa and uses a G3/4 air port. Because this legacy unit is end-of-life, you should order the direct replacement: the SAI160X730. It shares the exact same ISO 15552 mounting interface, bore, stroke, output force, port size and accessories, fitting existing fixtures perfectly.
The SAI160X730 upgrade introduces an advanced piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that this specific SKU lacks a magnet (-S), meaning it cannot accept CS1-B or DS1-B sensors. If high-temperature operation is needed, a Viton H seal option extends the range to 150 C.
Airtac SI160 Standard Cylinder SI160X730 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X730 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X730 |
| Bore size | Ø160 mm |
| Stroke | 730 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 SAI160X730 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 SAI160X730 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 SI160X730
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×730 | 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 SI160X730 Is Used
Heavy Stamping Press
Drives large platens in metal forming with 10053 N push force at 0.5 MPa, relying on the 50 mm adjustable cushions to absorb heavy end-of-stroke impacts.
Automated Assembly Rig
Actuates heavy tooling fixtures over 730 mm; requires external guide rails to prevent rod bending and manage side loads during transit.
Replacing the Airtac SI160 Standard Cylinder SI160X730 with the SAI160X730
To replace the SI160X730, order the SAI160X730, confirming the ISO 15552 mounting interface, 160mm bore, 730mm stroke, G3/4 port, and M36x2 rod thread. This SKU has no magnet, so it cannot support position sensing; if you need switches, select an SAI equivalent with the S suffix. When sizing, consider neighboring bores: a 125mm bore yields 6136 N push at 0.5 MPa, while a 200mm bore yields 15708 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for suspended loads use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because 730mm exceeds 300mm, add external guides to prevent rod bending and side-load damage. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X730
- ✓ 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 SI160X730 FAQ
Yes, the SI160X730 is discontinued. The direct replacement is the SAI160X730. It is a true ISO 15552 profile cylinder that matches the original 160mm bore, 730mm stroke, output force, G3/4 port, and mounting interface, dropping directly into existing machinery.
It features a G3/4 air port, a 40mm rod, and an M36x2 rod thread. Force output is 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, with a theoretical maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X730
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X730 replacement — usually within 7-8 hours.