This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X75S, 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-SID63X75S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X75S
- 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-SID63X75S
The AirTAC B04-SID63X75S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring force is equal both ways (1402 N @0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant, mechanically identical to the base SID63X75S with a 63mm bore, 75mm stroke, G3/8 port, and M16x1.5 rod thread. This legacy SID model is discontinued and is fully replaced by the direct replacement SAID63X75S.
The SAID replacement reuses the exact ISO 15552 mounting interface and adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure. A double-rod design prevents rod rotation and lets the back rod carry a sensor cam. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X75S |
| Bore size | Ø63 mm |
| Stroke | 75 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-SAID63X75S 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-SAID63X75S 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-SID63X75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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-SID63X75S Is Used
Excavator Linkage
Equal-both-ways force drives synchronized linkage operations on heavy construction equipment without rod rotation.
Crusher Feed Gate
The double-rod design operates a feed gate on construction-machinery crushers, using the rear rod to trigger limit sensors.
Concrete Pump Valve
Switches concrete flow direction reliably in pump assemblies where equal push and pull forces are required.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75S with the B04-SAID63X75S
Replace the discontinued B04-SID63X75S directly with the SAID63X75S; it shares the identical 63mm bore, 75mm stroke, G3/8 port, and 30mm adjustable cushion. Size both ways using the equal-both-ways force: 1402 N @0.5 MPa, 1962 N @0.7 MPa, 2523 N @0.9 MPa. If more force is needed, step up to the 80mm bore; if less, use the 50mm bore. Choose a double-rod cylinder when you need anti-rotation, to drive two tools, or to mount a sensor cam on the back rod. Mounting options include Basic, FA, LB, and TC. The -S magnet enables position sensing. For stroke lengths >=300mm, verify side-load limits to prevent guide wear. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X75S
- ✓ 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-SID63X75S FAQ
Yes, the B04-SID63X75S is discontinued. The direct replacement is the SAID63X75S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SID63X75S. The SAID replacement shares the exact ISO 15552 interface, 63mm bore, 75mm stroke, G3/8 port, and mounting, but adds 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 air port is G3/8.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID63X75S
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID63X75S replacement — usually within 7-8 hours.