This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X536S, 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 SI160X536S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 536mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X536S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X536S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 536 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and a 50 mm adjustable air cushion. The direct replacement is the SAI160X536S, matching the bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. The -S magnet supports CS1-B/DS1-B switches.
| Model | Airtac SI160 Standard Cylinder SI160X536S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X536S |
| Bore size | Ø160 mm |
| Stroke | 536 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 SAI160X536S 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 SAI160X536S 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. |
| ×536 | 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).
Shifts substantial bulk material bins or heavy workpieces along production lines using its 10053 N thrust capacity.
To replace the SI160X536S, order the SAI160X536S, confirming the ISO 15552 mounting interface, 160 mm bore, 536 mm stroke, G3/4 port (PT/G/NPT), and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors. If sizing down, the 125 mm bore yields 6136 N at 0.5 MPa; sizing up to 200 mm provides 15708 N. For the 536 mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI160X536S is discontinued. The direct replacement is the SAI160X536S. It shares the identical ISO 15552 mounting interface, 160 mm bore, 536 mm stroke, output force, G3/4 port, and accessories, fitting directly into existing fixtures.
This double-acting cylinder features a G3/4 port. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa, the push force is 14074 N, and at 0.9 MPa it is 18095 N. 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 SAI160X536S replacement — usually within 7-8 hours.