This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X260TC, 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 SI160X260TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 260mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X260TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X260TC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore, 260 mm stroke and TC trunnion mount. Delivering 10053 N push force at 0.5 MPa, it features a 40 mm rod, M36x2 thread and G3/4 port. The direct replacement is the SAI160X260TC, matching the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor. For load holding, the cushion only decelerates; use an external rod lock or the SAIL/BSAI lock variants.
| Model | Airtac SI160 Standard Cylinder SI160X260TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X260TC |
| Bore size | Ø160 mm |
| Stroke | 260 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 SAI160X260TC 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 SAI160X260TC 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. |
| ×260 | 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).
Applies up to 14074 N at 0.7 MPa to secure large steel fabrications during machining or welding operations.
Shifts substantial injection or stamping tooling with a 40 mm rod, relying on the TC mount for pivot support.
To replace the SI160X260TC, order the SAI160X260TC keeping the TC trunnion mount, 160 mm bore, 260 mm stroke and G3/4 port. The SAI family adds SAIL, SAIF and BSAI lock/valve variants the SI lacked. For sizing, neighbouring bores are 125 mm (6136 N @0.5) and 200 mm (15708 N @0.5). Since this is a non-magnet SKU, it cannot accept CS1-B/DS1-B sensors. A plain cylinder drifts on air loss; use a pilot check valve for hold. For 260 mm strokes, ensure guide alignment to prevent rod bending.
Replacement checklist
Yes, the SI160X260TC is discontinued. The direct replacement is the SAI160X260TC. It matches the ISO 15552 mounting interface, 160 mm bore, 260 mm stroke, force, G3/4 port and TC mount, fitting existing fixtures perfectly.
This double-acting cylinder has 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 max of 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X260TC replacement — usually within 7-8 hours.