This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X530S, 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 SI160X530S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 530mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X530S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI160X530S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 530mm stroke. It delivers 10053 N push force at 0.5 MPa and uses a G3/4 air port. AirTAC replaced this legacy unit with the SAI160X530S, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. For applications needing load holding on air loss, the new SAI family offers SAIL and BSAI lock variants the original SI lacked.
| Model | Airtac SI160 Standard Cylinder SI160X530S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X530S |
| Bore size | Ø160 mm |
| Stroke | 530 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 SAI160X530S 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 SAI160X530S 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. |
| ×530 | 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 up to 18095 N at 0.7 MPa for bending thick metal plates and driving large stamping dies in automated fabrication lines.
Provides the 512 kg vertical lift margin needed to elevate loaded pallets between conveyor tiers using robust external guide rails.
Secures heavy industrial molds with a 2050 kgf maximum theoretical force, relying on the 50mm adjustable cushions to stop smoothly.
To replace the SI160X530S, order the SAI160X530S and verify your ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread. The -S suffix indicates a piston magnet for position sensing; the legacy SI used CS1-B/DS1-B switches, while the SAI family takes current AirTAC sensors. If sizing up or down, neighbouring bores (125mm or 200mm) offer 6136 N or 15708 N push at 0.5 MPa respectively. Because this is a 530mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder does not hold load without live air; the cushion only decelerates. For secure holding, specify the SAIL lock variant or an external pilot check valve.
Replacement checklist
Yes, the AirTAC SI160X530S is discontinued. The direct replacement is the SAI160X530S. It shares the identical ISO 15552 mounting interface, 160mm bore, 530mm stroke, output force, and G3/4 port, so it fits existing fixtures perfectly.
The 160mm bore uses a G3/4 air port. At 0.5 MPa it provides 10053 N push and 9425 N pull force. At 0.7 MPa push 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 SAI160X530S replacement — usually within 7-8 hours.