This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X25S, 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-SID63X25S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X25S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X25S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X25S
- 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-SID63X25S
The AirTAC B04-SID63X25S is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix designates it as a construction-machinery dedicated variant; mechanically, it is identical to the base SID63X25S. A rod exits both ends of the extruded aluminum profile barrel on a single piston, meaning both faces use the rod-side area and push/pull force is equal both ways (1402 N @0.5 MPa). This model is discontinued. The direct replacement is the SAID63X25S, which retains the same 63mm bore, 25mm stroke, G3/8 air port, M16x1.5 rod thread, and mounting interface.
Because the second rod passes through the rear cover, it provides inherent anti-rotation properties and can carry a sensor cam to drive two tools simultaneously. The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that a plain cylinder does not hold loads on air loss; the adjustable 30mm cushions only decelerate near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X25S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X25S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X25S |
| Bore size | Ø63 mm |
| Stroke | 25 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-SAID63X25S 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-SAID63X25S 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-SID63X25S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×25 | 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-SID63X25S Is Used
Excavator Valve Actuation
Drives pilot valves on heavy equipment where equal push and pull force is required for precise hydraulic directional control.
Loader Linkage Sync
Uses the dual-rod anti-rotation特性 to keep construction machinery linkage arms aligned without twisting during rapid extension.
Crane Fixture Clamping
Mounts a rear CS1-B/DS1-B sensor cam on the second rod to confirm clamp position on heavy-equipment assembly fixtures.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X25S with the B04-SAID63X25S
To replace the discontinued B04-SID63X25S, specify the SAID63X25S directly—it is a direct upgrade retaining the ISO 15552 mounting interface, 63mm bore, 25mm stroke, and G3/8 port. Size both ways by checking neighbor bores if you need more or less equal-both-ways force, ensuring you never quote a larger single-rod push value. A double-rod design is right when you need anti-rotation, a rear sensor cam, or dual-tool driving. Mounting options include Basic, FA, LB, and TC. The -S magnet supports legacy CS1-B/DS1-B switches. Because the 25mm stroke is under 300mm, side-load rod bending is minimal, but for held loads use an external rod lock or SAIL/BSAI variant, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X25S
- ✓ 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-SID63X25S FAQ
Yes, the B04-SID63X25S (construction-machinery dedicated variant of SID63X25S) is discontinued. The direct replacement is the SAID63X25S. It matches the 63mm bore, 25mm stroke, G3/8 port, and ISO 15552 mounting, while upgrading the piston seal to two Y-shaped one-way elements.
Force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The air port is G3/8, the rod thread is M16x1.5, and it has 30mm adjustable cushions. 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-SAID63X25S
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID63X25S replacement — usually within 7-8 hours.