This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X800S, 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-SID80X800S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X800S
- 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-SID80X800S
The AirTAC B04-SID80X800S is a discontinued double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID80X800S, mechanically identical to it. A rod exits both ends on one piston, meaning push and pull force are equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The bore is 80 mm, port is G3/8, rod thread is M20x1.5, and it includes a -S magnet for legacy CS1-B/DS1-B sensors. It is replaced direct by the SAID80X800S.
The SAID80X800S replacement shares the exact ISO 15552 interface, bore, stroke, and port, while adding an upgraded two Y-shaped one-way piston seal for lower start-up pressure. Double-rod benefits include anti-rotation and using the back rod to carry a sensor cam. Note that air cushions only decelerate; use an external rod lock or SAIL/BSAI variant for load holding.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X800S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X800S |
| Bore size | Ø80 mm |
| Stroke | 800 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-SAID80X800S 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-SAID80X800S 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-SID80X800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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-SID80X800S Is Used
Excavator Linkage Actuation
Drives synchronized heavy-equipment covers or linkage arms on construction machinery where equal push/pull force prevents sagging during bidirectional positioning.
Dual-Tool Material Transfer
Simultaneously operates two opposing grippers or pushers from a single central body, halving cycle time in heavy-duty off-highway equipment assembly lines.
Anti-Rotation Guide Frames
Uses the dual-rod geometry to resist torsional twist and maintain precise alignment for heavy structural drilling or riveting heads on mobile cranes.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X800S with the B04-SAID80X800S
Replace the discontinued B04-SID80X800S directly with the SAID80X800S, reusing your existing FA, LB, or TC ISO 15552 mounts without modification. Size both ways by checking neighbor bores: the 63 mm bore yields 1402 N @0.5 MPa, while the 100 mm bore yields 3681 N @0.5 MPa, but this 80 mm bore provides an equal 2268 N in both directions. Choose a double-rod design when you need anti-rotation, dual-tool driving, or a back-rod sensor cam. Keep the -S magnet for CS1-B/DS1-B switches. At 800 mm stroke, add external guides to prevent rod bending and side-load damage. Remember, cushions only decelerate; for held loads use an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X800S
- ✓ 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-SID80X800S FAQ
Yes, the B04-SID80X800S is discontinued. The direct replacement is the SAID80X800S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SID80X800S, so all physical specs—80 mm bore, 800 mm stroke, G3/8 port, M20x1.5 thread—are identical. The SAID keeps the ISO 15552 mounting interface and adds an upgraded piston seal.
Because it is double-acting double-rod, force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Speed is 30-800 mm/s. A plain cylinder does not hold loads on air loss; the 36 mm adjustable cushions only decelerate near stroke end. For held loads, use an external rod lock or pilot-operated check valve.
Related AirTAC SAI Cylinders
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