This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X300, 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-SID32X300
The AirTAC B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X300 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 300mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID32X300, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X300
- 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-SID32X300
The AirTAC B04-SID32X300 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal at 345 N (@0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the base SID32X300, mechanically identical to it with a 32 mm bore, 300 mm stroke, G1/8 port, and M10x1.25 rod thread. This SID model is discontinued and the direct replacement is the SAID32X300, which reuses the exact same ISO 15552 mounting interface and adds an upgraded piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life.
Because both faces use the rod-side area, the equal-both-ways force is 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Note this non-magnetic SKU cannot take a sensor, and a plain cylinder drifts on air loss—the 27 mm cushion only decelerates near stroke end. For a held load, use an external rod lock or SAIL/BSAI variant.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X300 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X300 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X300 |
| Bore size | Ø32 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID32X300 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The B04-SAID32X300 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-SID32X300
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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-SID32X300 Is Used
Excavator Linkage Actuation
Drives synchronized tooling on construction machinery where the back rod provides an external sensor cam surface for mechanical limit checks without requiring embedded magnets.
Heavy Equipment Gates
Operates dual-sided access panels on heavy equipment, utilizing the equal both-ways force to securely push and pull the 18 kg vertical load within the safe working limit.
Loader Positioning Stops
Indexes positioning stops on loaders where the double-rod design prevents rotation during extension, ensuring precise alignment under fluctuating pressures up to 1.0 MPa.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X300 with the B04-SAID32X300
To replace the discontinued B04-SID32X300, order the direct replacement SAID32X300, keeping the identical 32 mm bore, 300 mm stroke, G1/8 port, and ISO 15552 mounting footprint (Basic, FA, LB, TC). Size both ways by checking the equal push/pull force: if 345 N @0.5 MPa is insufficient, step up to the 40 mm bore (528 N); if oversized, step down. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously from one piston. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. With a 300 mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X300
- ✓ 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-SID32X300 FAQ
Yes, the B04-SID32X300 is discontinued. The direct replacement is the SAID32X300. The B04- prefix simply denotes the construction-machinery dedicated variant; mechanically, the SAID32X300 matches it exactly with the same 32 mm bore, 300 mm stroke, G1/8 port, and ISO 15552 mounting interface, but adds an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. It operates at 30-800 mm/s, uses a G1/8 port, and has a 27 mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
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