Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S
The AirTAC B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S is a genuine double-acting standard air cylinder with a Ø40mm bore and 500mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ40 mm
- Stroke500 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
- 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-SC Construction Machinery Special Standard Cylinder B04-SC40X500S
The B04-SC40X500S is an AirTAC double-acting tie-rod pneumatic cylinder built for construction machinery. The B04- prefix denotes the construction-machinery dedicated variant of the standard SC40X500S, meaning it is mechanically identical to the base model with a 40mm bore and 500mm stroke. It generates 628N of push force at 0.5 MPa and up to 1130N at 0.9 MPa.
This unit includes a built-in magnet for position sensing and uses standard TPU seals rated for -20 to +70 C. It features a 16mm piston rod, a PT1/4 port, and 21mm adjustable cushions at both ends. The overall extended length is approximately 642mm, combining the 142mm body length A with the 500mm stroke.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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.
Where the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S Is Used
Excavator Accessory Actuation
Drives secondary attachment movements on earthmoving equipment where a 500mm stroke and 879N force at 0.7 MPa are required for extending components.
Concrete Pump Positioning
Shifts diverter valves or positioning gates on concrete pumping rigs, relying on the built-in magnet to confirm stroke endpoints in dusty environments.
Heavy Equipment Doors
Automates heavy access panels on cranes or loaders, utilizing the 21mm adjustable cushions to soften the impact at the end of the 500mm travel.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S the Right Cylinder?
This 40mm bore provides 628N push force at 0.5 MPa. If your heavy equipment needs less force, stepping down to a 32mm bore yields 402N. For higher actuation demands, a 50mm bore offers 982N. When replacing this unit, match the 40mm bore, 500mm stroke, PT1/4 port thread, basic mounting, and the S magnetic piston option.
Because this cylinder features a 500mm stroke, the 16mm rod is subject to bending under side loads. For construction machinery applications requiring long reach, use an external guide rail or a guided cylinder to prevent rod bearing damage and premature wear.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X500S FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant of the SC40X500S cylinder. It is mechanically identical to the standard SC40X500S, offering the same 40mm bore, 500mm stroke, 1130N thrust at 0.9 MPa, and magnetic piston.
No, the SC series is double-acting and cannot hold position without live air pressure. If a load must be held vertically during pressure loss, you must use an external rod brake, mechanical lock, or pilot-operated check valve. The adjustable cushion only decelerates the piston near stroke end.
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