This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X175, 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-SID80X175
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X175, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X175
- 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-SID80X175
The AirTAC B04-SID80X175 is an ISO 15552 double-acting double-rod cylinder where the B04- prefix marks it as a construction-machinery dedicated variant—mechanically identical to the standard SID80X175. A rod exits both ends of the extruded aluminum barrel on a single piston, ensuring push and pull force are equal both ways (2268 N @0.5 MPa). It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, and a G3/8 port. This SID model is discontinued; the direct replacement is the SAID80X175, which shares the same interface, force, and mounting.
The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks the -S magnet and cannot accept a sensor. A plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X175 |
| Bore size | Ø80 mm |
| Stroke | 175 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-SAID80X175 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-SAID80X175 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-SID80X175
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×175 | 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-SID80X175 Is Used
Excavator Linkage Actuation
Drives synchronized dual-tool mechanisms on heavy equipment where equal push/pull force and anti-rotation stability are critical for precise boom positioning.
Concrete Batch Gate
Opens and closes aggregate dispensers on batching plants, using the back rod end to push a mechanical indicator while the front rod shifts the diverter.
Crane Outrigger Lock
Positions stabilizer pads on mobile cranes, requiring the 3175 N @0.7 MPa equal both-ways force to overcome friction and seat the heavy outrigger legs.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175 with the B04-SAID80X175
To replace the discontinued B04-SID80X175, specify the SAID80X175; it is a direct retaining the ISO 15552 mounting interface, 80 mm bore, 175 mm stroke, G3/8 port, and 25 mm dual rods. Size both ways by confirming the 2268 N @0.5 MPa equal force fits your load, or step to the 100 mm bore if more force is needed. Choose a double-rod cylinder when you need anti-rotation stability, to mount a sensor cam on the back rod, or to drive two tools simultaneously. Mounting options include Basic, FA, LB, and TC. For strokes >=300 mm, verify side-load limits to prevent guide wear. Because this SKU lacks the -S magnet, it cannot use magnetic switches; add -S to the SAID order if sensing is required.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X175
- ✓ 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-SID80X175 FAQ
Yes, the B04-SID80X175 (construction-machinery dedicated SID80X175) is discontinued. The direct replacement is the SAID80X175. It shares the identical ISO 15552 interface, 80 mm bore, 175 mm stroke, G3/8 port, and 25 mm double rods. The SAI family also adds an upgraded piston seal and SAIL/BSAI lock variants.
Force is equal both ways because the rod exits both ends: 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 speed is 30-800 mm/s. This SKU lacks the -S magnet so it cannot accept sensors, and it will not hold a load on air loss without an external rod lock.
Related AirTAC SAI Cylinders
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