This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X500S, 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-SID63X500S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X500S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X500S
- 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-SID63X500S
The AirTAC B04-SID63X500S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal force both ways (1402 N @0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant, mechanically identical to the base SID63X500S with a 63 mm bore, 500 mm stroke, and G3/8 port. This SID model is discontinued; the direct replacement is the SAID63X500S, which shares the same 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 identical rod-side area, push and pull forces match exactly (1962 N @0.7 MPa). This symmetrical layout prevents rod-side volume changes, making it ideal for driving two tools or mounting a sensor cam on the back rod. Note that a plain cylinder does not hold loads on air loss; the adjustable 30 mm cushions only decelerate near stroke end, so use an external rod lock or SAIL variant for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X500S |
| Bore size | Ø63 mm |
| Stroke | 500 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-SAID63X500S 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-SAID63X500S 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-SID63X500S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×500 | 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-SID63X500S Is Used
Excavator Panel Pusher
Equal both-ways force drives and retracts a forming tool on heavy-equipment cabs, using the back rod as a stable mounting point for a displacement sensor.
Loader Linkage Actuator
Symmetrical double-rod action provides anti-rotation stability for shifting heavy mechanical linkages on construction machinery without uneven wear.
Crusher Feed Gate
Drives two synchronized tooling heads from one piston, opening and closing heavy material feed gates with matched 1962 N force at 0.7 MPa.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500S with the B04-SAID63X500S
To replace the discontinued B04-SID63X500S, specify the SAID63X500S, which preserves the 63 mm bore, 500 mm stroke, G3/8 port, M16x1.5 rod thread, and ISO 15552 mounting interface (Basic, FA, LB, TC). Size both ways by verifying the equal push/pull force of 1402 N @0.5 MPa; if higher force is needed, step up to the 80 mm bore, or drop to 50 mm for lighter loads. A double-rod design is the right choice when you need anti-rotation stability, equal force in both directions, or a back rod to carry a sensor cam. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Because the stroke is 500 mm, ensure external guides support side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X500S
- ✓ 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-SID63X500S FAQ
Yes, the B04-SID63X500S is discontinued. The direct replacement is the SAID63X500S. The B04- prefix simply marks it as construction-machinery dedicated; mechanically it is identical to the base SID63X500S. The SAID replacement shares the same ISO 15552 mounting, 63 mm bore, 500 mm stroke, G3/8 port, and equal both-ways 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, the air port is G3/8, the rod thread is M16x1.5, and it features 30 mm adjustable cushions at each end.
Related AirTAC SAI Cylinders
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