This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X75TC, 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 SI160 Standard Cylinder SI160X75TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 75mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X75TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X75TC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 75 mm stroke, delivering 10053 N of push force at 0.5 MPa through its G3/4 port. Because this legacy unit lacks a magnet, it cannot accept position switches. The direct is the SAI160X75TC, which matches the TC trunnion mount, M36x2 thread, and 50 mm cushions exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. If your fixture needs load holding on air loss, note that the cushion only decelerates; you must use the SAIL or BSAI lock variants instead.
| Model | Airtac SI160 Standard Cylinder SI160X75TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X75TC |
| Bore size | Ø160 mm |
| Stroke | 75 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 SAI160X75TC 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 SAI160X75TC 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. |
| ×75 | 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 stamping and forming presses requiring 10053 N of push force at 0.5 MPa, utilizing the 75 mm stroke for rapid high-tonnage cycles.
Secures heavy fabricated components during machining via the TC trunnion mount, absorbing side loads on the 40 mm rod.
To replace the SI160X75TC, order the SAI160X75TC to retain the exact ISO 15552 TC trunnion mounting interface, 75 mm stroke, and G3/4 port. This SKU has no magnet, so it cannot support sensing; if you need position feedback, select an SAI equivalent with the S suffix for current AirTAC switches. The 160 mm bore yields 10053 N push at 0.5 MPa; if you need less force, a 125 mm bore provides 6136 N, while a 200 mm bore offers 15708 N. For any load holding, the standard cylinder will drift without live air, so specify an external pilot check valve or the SAIL lock variant.
Replacement checklist
Yes, the SI160X75TC is discontinued. The direct replacement is the SAI160X75TC. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 75 mm stroke, G3/4 port, and TC trunnion mount, so it drops directly into existing fixtures.
This double-acting cylinder uses a G3/4 air port. The thrust is 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and 18095 N push at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X75TC replacement — usually within 7-8 hours.