This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X500, 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-SID63X500
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500 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-SAID63X500, 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-SAID63X500
- 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-SID63X500
The AirTAC B04-SID63X500 is a double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal both ways at 1402 N @0.5 MPa. The B04- prefix marks this as a construction-machinery dedicated variant, mechanically identical to the base SID63X500 with a 63mm bore, 500mm stroke, and G3/8 port. This SID model is discontinued and end-of-life.
The direct replacement is the SAID63X500, reusing the same ISO 15552 mounting interface, M16x1.5 rod thread, and 30mm adjustable cushion. The SAI family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure, and adds SAIL or BSAI lock variants. Without a -S suffix, this SKU cannot take a magnetic switch.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X500 |
| 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-SAID63X500 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-SAID63X500 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-SID63X500
| 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-SID63X500 Is Used
Excavator Linkage Actuation
Drives balanced push-pull linkage movements in heavy-equipment cabins using equal both ways force, preventing uneven wear on pivot pins.
Crane Boom Extension
Synchronizes two tool mounts from one piston on construction-machinery booms, utilizing the back rod for a mechanical stop while handling a 500mm stroke.
Loader Attachment Shift
Shifts heavy attachments on loaders with an equal both ways push and pull, requiring external guides to manage side-load over the long 500mm extension.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X500 with the B04-SAID63X500
To replace the discontinued B04-SID63X500, drop in the SAID63X500 directly; it matches the 63mm bore, 500mm stroke, G3/8 port, and FA/LB/TC mounting interface exactly. Size both ways by checking neighbour bores (50mm or 80mm) against the equal both ways force requirement. A double rod is right when you need anti-rotation, or when the back rod carries a sensor cam or drives two tools. Because this SKU lacks the -S magnet, it cannot take a sensor. For the 500mm long stroke, use external guides to prevent rod-bending and side-load damage. A plain cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X500
- ✓ 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-SID63X500 FAQ
Yes, the B04-SID63X500 (construction-machinery dedicated variant of SID63X500) is discontinued. The direct replacement is the SAID63X500, which shares the identical ISO 15552 interface, 63mm bore, 500mm stroke, G3/8 port, and equal both ways force. The B04- prefix is an application designation only and does not change physical specs.
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 63mm with a G3/8 air port, M16x1.5 rod thread, and 30mm adjustable cushion. It operates at 0.15-1.0 MPa with speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID63X500
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID63X500 replacement — usually within 7-8 hours.