This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X150S, 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-SID80X150S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X150S
- 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-SID80X150S
The AirTAC B04-SID80X150S is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix designates it as a construction-machinery dedicated variant, mechanically identical to the standard SID80X150S. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways 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 thread, G3/8 port, and 36 mm adjustable cushions. This SID model is discontinued; the direct replacement is the SAID80X150S, which adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
Because the second rod prevents piston drift and provides anti-rotation stability, it is ideal for heavy-equipment actuation. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X150S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X150S |
| Bore size | Ø80 mm |
| Stroke | 150 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-SAID80X150S 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-SAID80X150S 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-SID80X150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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-SID80X150S Is Used
Excavator Linkage Control
Uses the double-rod's equal both-ways force and anti-rotation properties to synchronize heavy linkage movements on construction machinery without drift.
Crane Outrigger Locking
Drives dual mechanisms simultaneously from one piston, relying on the 3175 N @0.7 MPa force and stable G3/8 port air supply for heavy-equipment deployment.
Loader Attachment Actuation
Provides precise positioning for attachment brackets where the second rod acts as a stable sensor cam track for legacy CS1-B/DS1-B switches.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X150S with the B04-SAID80X150S
To replace the discontinued B04-SID80X150S, specify the SAID80X150S—it preserves the ISO 15552 mounting interface, 80 mm bore, 150 mm stroke, G3/8 port, and equal both-ways force. Size both directions by checking neighbouring bores (like 63 mm or 100 mm) against your force requirements, remembering this 80 mm bore yields 2268 N @0.5 MPa and 3175 N @0.7 MPa equally. A double-rod design is right when you need anti-rotation stability or want to drive two tools from one piston. Reuse FA, LB, or TC mounts directly. The -S magnet enables legacy CS1-B/DS1-B sensors. For this 150 mm stroke, side-load is minimal, but for any stroke >=300 mm, ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X150S
- ✓ 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-SID80X150S FAQ
Yes, the B04-SID80X150S is discontinued. The direct replacement is the SAID80X150S, which shares the identical ISO 15552 interface, 80 mm bore, 150 mm stroke, G3/8 port, and mounting. The B04- prefix simply marks it as construction-machinery dedicated; the SAI replacement uses an upgraded piston seal and current AirTAC switches.
Because it is a double-rod cylinder, force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The bore is 80 mm with a G3/8 air port, a 25 mm rod, M20x1.5 thread, and 36 mm adjustable cushions. It operates at 0.15-1.0 MPa with speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
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