This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X450S, 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-SID63X450S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X450S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X450S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X450S
- 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-SID63X450S
The AirTAC B04-SID63X450S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the base SID63X450S, mechanically identical to it. This model is discontinued; the direct replacement is the SAID63X450S, which adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The 63 mm bore features a G3/8 air port, M16x1.5 rod-end thread, and 30 mm adjustable cushions at each end. Because the second rod can carry a sensor cam or drive two tools simultaneously while resisting rotation, it is highly effective for heavy-equipment builders.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X450S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X450S |
| Bore size | Ø63 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID63X450S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The B04-SAID63X450S 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-SID63X450S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×450 | 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-SID63X450S Is Used
Excavator Linkage Actuation
Drives dual-tool mechanisms on heavy equipment with equal push and pull force, using the back rod to carry a sensor cam for closed-loop positioning.
Crusher Tool Synchronization
Powers opposing crushing jaws in construction-machinery processing plants, relying on the double-rod's inherent anti-rotation properties to maintain jaw alignment.
Loader Attachment Shift
Shifts heavy attachment brackets on loaders, matching the 63 mm bore's 1962 N @0.7 MPa equal both-ways force to handle bidirectional tooling loads safely.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X450S with the B04-SAID63X450S
To replace the discontinued B04-SID63X450S, specify the SAID63X450S—it is a direct swap retaining the ISO 15552 mounting interface, 450 mm stroke, G3/8 port, and equal both-ways force. Size both ways by confirming 1402 N @0.5 MPa meets your push and pull requirements, or step to the 80 mm bore (2268 N @0.5 MPa) if more force is needed. A double rod is right when you need anti-rotation stability or a back rod for a sensor cam. Reuse FA, LB, or TC mounts. The -S suffix provides a piston magnet for CS1-B/DS1-B switches. For the 450 mm stroke, use external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X450S
- ✓ 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-SID63X450S FAQ
Yes, the B04-SID63X450S is discontinued. The direct replacement is the SAID63X450S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SID63X450S. The SAID replacement shares the exact same ISO 15552 interface, bore, stroke, G3/8 port, and force, while adding an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The bore is 63 mm with a G3/8 air port, M16x1.5 rod thread, and 30 mm adjustable cushions. Speed is 30-800 mm/s. A plain cylinder does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for held loads.
Related AirTAC SAI Cylinders
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