This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X160, 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 B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X160 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 160mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X160, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC B04-SID63X160 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The B04- prefix marks this as a construction-machinery dedicated variant of the base SID63X160, mechanically identical with a 63mm bore, 160mm stroke, G3/8 port, and M16x1.5 rod thread. This SKU has no -S magnet and cannot carry a sensor. The SID line is discontinued; the direct replacement is the SAID63X160, which adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side area, force is identical in both directions, preventing the unequal thrust of single-rod units. This design allows the back rod to drive a second tool or carry a sensor cam on adjacent machinery. Note that a plain cylinder does not hold loads on air loss; the 30mm adjustable cushions only decelerate near stroke end, so use an external rod lock for held loads.
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X160 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X160 |
| Bore size | Ø63 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID63X160 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The B04-SAID63X160 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). |
|---|---|
| 63 | Bore size in mm. |
| ×160 | 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).
Equal both-ways force actuates heavy-equipment control linkages, ensuring stable push and pull without the thrust differential of a single-rod cylinder.
The extending back rod synchronizes a secondary mechanism on construction machinery, allowing one ISO 15552 cylinder to drive two separate tool functions simultaneously.
Double-rod geometry provides inherent anti-rotation resistance, keeping heavy-equipment alignment guides stable during extension and retraction on site.
To replace the discontinued B04-SID63X160, specify the direct replacement SAID63X160, which preserves the ISO 15552 mounting interface, G3/8 port, and 160mm stroke. Size both ways by verifying the 1402 N @0.5 MPa equal force is sufficient; if more thrust is needed, step up to the 80mm bore (2268 N), or drop to the 50mm bore (825 N) for lighter duties. A double-rod design is right when you need equal thrust in both directions, anti-rotation stability, or a back rod to drive a second mechanism. Mounting options include Basic, FA, LB, and TC. For strokes of 300mm or longer, account for side-load deflection on the rod. This non-magnetic SKU cannot use sensors; if sensing is required, select an -S model.
Replacement checklist
Yes, the B04-SID63X160 is discontinued. The direct replacement is the SAID63X160. The B04- prefix only marks it as a construction-machinery dedicated variant; mechanically it is identical to the base SID63X160. The SAID replacement shares the same ISO 15552 interface, 63mm bore, 160mm stroke, G3/8 port, and mounting, but adds an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The air port is G3/8, the rod thread is M16x1.5, and it has 30mm adjustable cushions at each end. It operates at 0.15-1.0 MPa with speeds of 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID63X160 replacement — usually within 7-8 hours.