This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X500, 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-SID80X500
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X500 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X500, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X500
- 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-SID80X500
The AirTAC B04-SID80X500 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix designates it as a construction-machinery dedicated variant of the base SID80X500, mechanically identical in every spec. A rod exits both ends on one piston, meaning both faces use the rod-side area, so push and pull force are equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. It features a 25 mm rod, M20x1.5 rod thread, G3/8 port, and 36 mm adjustable air cushions. This legacy model is discontinued; the direct replacement is the SAID80X500, which reuses the same ISO 15552 mounting interface and adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure.
Because the second rod can drive a second tool simultaneously or carry a sensor cam while resisting rotation, double-rod designs excel in heavy-equipment frames. Note this non-magnetic SKU cannot accept switches, and a plain cylinder does not hold loads on air loss—the cushion only decelerates near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X500 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X500 |
| Bore size | Ø80 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID80X500 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The B04-SAID80X500 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-SID80X500
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X500 Is Used
Excavator Linkage Actuation
Drives dual opposing wear plates in heavy-equipment frames, using the equal both-ways force to manage construction-machinery linkage geometry without rotational drift.
Crane Counterweight Shift
Shifts ballast platforms on mobile cranes where the back rod provides a stable mechanical stop, requiring external guides to handle side loads over the 500 mm extension.
Paver Synchronized Gates
Opens dual hopper gates simultaneously on road pavers, leveraging the second rod to carry a mechanical cam while maintaining equal push and pull thrust.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X500 with the B04-SAID80X500
To replace the discontinued B04-SID80X500, specify the SAID80X500; it is a direct swap retaining the 80 mm bore, 500 mm stroke, G3/8 port, and ISO 15552 mounting dimensions (Basic, FA, LB, TC). Size both directions by verifying the equal both-ways force (2268 N @0.5 MPa) handles your load, or step to neighbouring bores (63 mm or 100 mm) if margins differ. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools from one piston. Because this 500 mm stroke is long, use external guides to prevent rod bending under side loads. This SKU lacks the -S magnet, so it cannot use magnetic switches; for load-holding on air loss, use an external rod lock or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X500
- ✓ 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-SID80X500 FAQ
Yes, the B04-SID80X500 (construction-machinery dedicated SID80X500) is discontinued. The direct replacement is the SAID80X500. It shares the identical ISO 15552 mounting interface, 80 mm bore, 500 mm stroke, G3/8 port, and equal both-ways force, while adding an upgraded piston seal.
Force is equal both ways (push and pull) at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The air port is G3/8, the rod is 25 mm with an M20x1.5 thread, and it has 36 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID80X500
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