This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X800, 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.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X800, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X800
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800
The B04-SID63X800 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as AirTAC's construction-machinery dedicated variant, mechanically identical to the standard SID63X800. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. It features a 63mm bore, 800mm stroke, G3/8 port, M16x1.5 rod thread, and 30mm adjustable cushions. This SID model is discontinued; the direct replacement is the SAID63X800, which reuses the same ISO 15552 mounting interface, bore, stroke, and port.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for low start-up pressure and long life, while introducing SAIL and BSAI lock variants. This SKU lacks the -S magnet and cannot take a magnetic switch. A plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock for held loads. At 800mm stroke, external guides are recommended to prevent rod bending under side loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X800 |
| Bore size | Ø63 mm |
| Stroke | 800 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-SAID63X800 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| 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-SAID63X800 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800 Is Used
Excavator Boom Actuation
Drives balanced push/pull boom functions on heavy equipment where equal both-ways force prevents sagging during reversible hydraulic-pneumatic pilot circuits.
Crusher Tool Sync
Powers dual-tool crushing jaws on construction-machinery attachments, using the back rod to carry a mechanical cam for stroke synchronization without sensors.
Material Gate Diversion
Actuates heavy aggregate gates on site conveyors, requiring the 1402 N @0.5 MPa equal force to reliably shift dense loads in both extend and retract directions.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800 with the B04-SAID63X800
To replace the discontinued B04-SID63X800, specify the SAID63X800, which is a direct swap retaining the 63mm bore, 800mm stroke, G3/8 port, and ISO 15552 mounting dimensions (Basic, FA, LB, TC). Size both directions by the equal force: if 1962 N @0.7 MPa is insufficient, step up to the 80mm bore (3175 N @0.7), or drop to the 50mm bore (1154 N @0.7) if lower force is acceptable. A double-rod design is correct when you need equal both-ways force, anti-rotation stability, or a back rod to carry a sensor cam. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; add an external cam if tracking is needed. For the 800mm stroke, use FA or LB mounts with external guides to manage rod-bending side loads. Remember, air cushions only decelerate; for load-holding without live air, specify an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X800
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X800 FAQ
Yes, the B04-SID63X800 (construction-machinery dedicated variant of SID63X800) is discontinued. The direct replacement is the SAID63X800. It shares the identical ISO 15552 mounting interface, 63mm bore, 800mm stroke, G3/8 port, and equal both-ways force. The SAI family also adds an upgraded piston seal and SAIL/BSAI lock variants.
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 adjustable cushions are 30mm. Speed is 30-800 mm/s. It lacks a -S magnet, so no magnetic switch can be fitted.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID63X800
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