This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X500, 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 Airtac SID Series Double-Rod Cylinder SID160X500 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 500mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID160X500, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID160X500 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways at 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. It features a 160mm bore, G3/4 port, M36x2 rod thread, and 50mm adjustable cushions. This legacy SID model is discontinued and the direct replacement is the SAID160X500, matching the interface, bore, stroke, and mounting.
Because both faces use the rod-side area, the second rod can drive a second tool or carry a sensor cam while resisting rotation. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure. Note this non-magnetic SKU cannot take a switch, and the cushion only decelerates; use an external rod lock for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID160X500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X500 |
| Bore size | Ø160 mm |
| Stroke | 500 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 SAID160X500 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 SAID160X500 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. |
| ×500 | 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).
Simultaneously pushes parts at two points using both rod ends, maintaining equal force and preventing rotation during transfer.
Clamps a heavy workpiece from opposite sides with identical 9425 N force at 0.5 MPa, ensuring zero deflection during milling.
To replace the discontinued SID160X500, use the SAID160X500 direct, keeping the ISO 15552 mounting and G3/4 port. Size both ways by checking neighbor bores if you need less or more equal force. A double rod is right when you need anti-rotation or to drive two tools. Mount using Basic, FA, LB, or TC. As this is a non-magnetic SKU, it cannot take a switch. For the 500mm stroke, add external guides to prevent rod bending under side-load.
Replacement checklist
Yes, the SID160X500 is discontinued. The direct replacement is the SAID160X500, which matches the ISO 15552 interface, 160mm bore, 500mm stroke, G3/4 port, and equal both ways force.
Force is equal both ways at 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. Speed is 30-500 mm/s. The G3/4 port and 50mm cushion are fixed by the 160mm bore. The cushion only decelerates; it does not hold loads on air loss.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID160X500 replacement — usually within 7-8 hours.