
The AirTAC B04-SC Construction Machinery Special Standard Cylinder B04-SC63X250S is a genuine double-acting standard air cylinder with a Ø63mm bore and 250mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC B04-SC63X250S is a double-acting tie-rod pneumatic cylinder engineered for heavy-equipment builders. The B04- prefix designates this as a construction-machinery dedicated variant of the standard SC63X250S, meaning it carries the exact same mechanical specifications while being targeted at rugged industry applications.
Delivering a push force of 1559 N at 0.5 MPa and 2805 N at 0.9 MPa, this unit features a 63 mm bore and 250 mm stroke. It includes a 20 mm piston rod, PT1/4 ports, and 28 mm adjustable cushions. The S suffix adds a built-in magnet for CMSG/DMSG/EMSG sensor integration.
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC63X250S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (approx.) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Drives auxiliary covers and compartment doors on earthmoving equipment where the B04 construction-machinery designation ensures application fit.
Pushes diversion gates in batching plants, utilizing the 2805 N thrust at 0.9 MPa to move heavy aggregate flows.
Uses the built-in S magnet with barrel-mounted reed sensors to confirm gate open/close status in dusty environments.
This 63 mm bore provides 1559 N of push force at 0.5 MPa. If your application requires less force, stepping down to a 50 mm bore yields 982 N, while moving up to an 80 mm bore provides 2513 N. For replacements, match the 63 mm bore, 250 mm stroke, PT1/4 port thread, basic mounting, and the -S magnet option.
Because the 250 mm stroke creates an unsupported rod length, avoid applying heavy side loads directly to the piston rod. Long unsupported rods bend under side load, so utilize an external guide rail or select a guided cylinder to prevent rod-bearing damage.
Quick checklist
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant of the SC63X250S. It is mechanically identical to the standard SC cylinder, offering the same 63 mm bore, 250 mm stroke, and 2805 N thrust at 0.9 MPa.
No, the SC cylinder does not hold its position when air pressure is lost or exhausted. The adjustable cushion only decelerates the piston near stroke end. A mechanical lock, external rod brake, or pilot-operated check valve is required to hold a load.
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