This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X40TC, 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 SI160X40TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X40TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X40TC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 40 mm stroke. Delivering 10053 N push force at 0.5 MPa, it uses a G3/4 port and M36x2 rod thread. The direct replacement is the SAI160X40TC, matching the exact TC trunnion mount, interface, and output force.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SI SKU lacks a magnet (-S), it cannot accept a CS1-B/DS1-B sensor. For load holding, note that standard cylinders drift without live air; use the SAIL lock or BSAI clamp-lock variants.
| Model | Airtac SI160 Standard Cylinder SI160X40TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X40TC |
| Bore size | Ø160 mm |
| Stroke | 40 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 SAI160X40TC 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 SAI160X40TC 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. |
| ×40 | 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).
Generates 14074 N at 0.7 MPa for high-tonnage forming, stamping, and riveting tasks in automated fabrication lines.
Provides the rigid holding power needed to secure large injection molds, with a 50 mm cushion absorbing end-of-stroke impacts.
To replace the discontinued SI160X40TC, order the SAI160X40TC. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the TC trunnion mount, 40 mm stroke, G3/4 port, and 10053 N force. Since this SKU has no magnet, it cannot support sensing; if position detection is needed, specify an SAI160X40S model with current AirTAC switches. When sizing, a 125 mm bore offers 6136 N push at 0.5 MPa, while a 200 mm bore provides 15708 N. For load holding on air loss, a plain cylinder drifts; the cushion only decelerates. Install an external pilot check valve or use the SAIL/BSAI lock variants. The Viton H seal option raises the temperature limit to 150 C.
Replacement checklist
Yes, the SI160X40TC is discontinued. The direct replacement is the SAI160X40TC. It shares the same ISO 15552 TC mounting interface, 160 mm bore, 40 mm stroke, G3/4 port, and output force, fitting existing fixtures perfectly.
It operates at 0.15-1.0 MPa (proof 1.5 MPa) with a speed of 30-500 mm/s. Forces are: 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 max of 2050 kgf at 1.0 MPa. It features a 40 mm rod, M36x2 thread, and 50 mm adjustable cushions.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X40TC replacement — usually within 7-8 hours.