Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC50X400S
The AirTAC B04-SC Construction Machinery Special Standard Cylinder B04-SC50X400S is a genuine double-acting standard air cylinder with a Ø50mm bore and 400mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke400 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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-SC50X400S
The B04-SC50X400S is an AirTAC double-acting tie-rod cylinder engineered for construction machinery. The B04- prefix designates this as a construction-equipment dedicated variant, meaning it is mechanically identical to the standard SC50X400S. It generates a push force of 982 N at 0.5 MPa and features a 20 mm piston rod.
Equipped with a built-in magnet for position sensing, this unit operates at speeds of 30-800 mm/s. The 400 mm stroke provides ample extension for heavy-duty actuation, while the adjustable cushion blocks measure 21 mm to soften end-of-stroke impacts.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC50X400S Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC50X400S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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, 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 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-SC50X400S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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-SC50X400S Is Used
Excavator Doors
Actuates heavy protective cab doors and access panels on earthmoving equipment, relying on the magnetic piston for open/close confirmation.
Concrete Dispensers
Drives the diverter gates on mobile concrete mixers, where the 400 mm stroke provides the full reach needed for material flow control.
Loader Linkages
Shifts secondary auxiliary linkages on compact track loaders, benefiting from the adjustable end cushions to handle sudden shifting loads.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC50X400S the Right Cylinder?
This 50 mm bore cylinder offers 982 N of push force at 0.5 MPa. If your application requires less force, stepping down to a 40 mm bore yields 628 N. For heavier loads, a 63 mm bore provides 1559 N. Because this model has a 400 mm stroke, the unsupported 20 mm rod is susceptible to bending under side loads; using an external guide rail or a guided cylinder is strongly recommended to prevent premature rod-bearing wear.
When sourcing a replacement, match these five attributes: 50 mm bore, 400 mm stroke, PT1/4 port thread, basic mounting style, and the -S magnetic piston option.
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-SC50X400S FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SC50X400S. It is mechanically identical to the standard SC cylinder, offering the same 50 mm bore, 400 mm stroke, PT1/4 ports, and magnetic piston.
No, it is a double-acting air cylinder and will drift or drop if pressure is lost or the valve is centered. The adjustable cushion only decelerates the piston at stroke ends; a mechanical lock or external brake is required to hold a load.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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