This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X35, 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.

The AirTAC Airtac SI160 Standard Cylinder SI160X35 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 35mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X35, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X35 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 35 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160X35, which matches the exact interface, bore, stroke, force and mounting hardware.
Because this specific SKU lacks the -S magnet suffix, it cannot accept a CS1-B or DS1-B sensor. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity.
| Model | Airtac SI160 Standard Cylinder SI160X35 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X35 |
| Bore size | Ø160 mm |
| Stroke | 35 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 SAI160X35 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X35 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×35 | 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).
Drives large heavy-duty stamping dies requiring substantial push force over a short 35 mm travel distance.
Secures thick steel plates during welding or machining by delivering 10053 N of clamping thrust at 0.5 MPa.
Applies steady downward pressure for laminating or molding bulky composite materials in manufacturing.
To replace the SI160X35, order the SAI160X35. Verify the ISO 15552 mounting interface, the 160 mm bore, the 35 mm stroke, the G3/4 port, and your mounting accessory (LB, FA, TC, etc.). This non-magnetic SKU cannot hold a position sensor; if sensing is needed, select an SAI model with the S suffix. If you need to downsize, the 125 mm bore yields 6136 N push at 0.5 MPa; if upsizing, the 200 mm bore provides 15708 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the AirTAC SI160X35 is discontinued. The direct replacement is the SAI160X35. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 35 mm stroke, output force, G3/4 port and mounting fixtures.
This double-acting cylinder uses a G3/4 air port. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical maximum force of 2050 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X35 replacement — usually within 7-8 hours.