Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC80X125S
The AirTAC B04-SC Construction Machinery Special Standard Cylinder B04-SC80X125S is a genuine double-acting standard air cylinder with a Ø80mm bore and 125mm stroke, PT3/8 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ80 mm
- Stroke125 mm
- Port sizePT3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 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-SC80X125S
The AirTAC B04-SC80X125S 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 SC80X125S, meaning it is mechanically identical to the base model while being targeted for rigorous off-highway applications. It delivers a robust push force of 2513 N at 0.5 MPa and a pull force of 2268 N.
Featuring an 80 mm bore and a 125 mm stroke, this unit includes a built-in magnet (indicated by the S suffix) allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for precise position feedback. It utilizes a 25 mm piston rod, a PT3/8 port, and adjustable cushions measuring 28 mm to decelerate the piston at stroke ends. The body length A is 182 mm, yielding a total extended length of 307 mm.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC80X125S Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC80X125S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (approx.) | 513 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-SC80X125S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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-SC80X125S Is Used
Excavator Actuation
Drives auxiliary covers and service doors on heavy earthmoving equipment, utilizing its 2513 N push force to move heavy steel panels reliably in dirty environments.
Concrete Dispenser Gate
Opens and closes discharge gates on cement mixing trucks, where the magnetic piston provides position confirmation to the machine's PLC for safe batching cycles.
Heavy Equipment Latches
Secures heavy-duty locking pins and mechanical latches on cranes or loaders, using 2268 N of pull force to retract the mechanism against debris and friction.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC80X125S the Right Cylinder?
Selecting this 80 mm bore cylinder makes sense when your application requires substantial force, pushing 2513 N at 0.5 MPa. If your mechanism needs less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927 N at 0.5 MPa. Because this model carries the S suffix, it is ready for solid-state or reed sensor integration.
When replacing an AirTAC SC or tie-rod cylinder, match these five points exactly: the 80 mm bore, 125 mm stroke, PT3/8 port thread, basic mounting style, and the built-in magnet. Although the 125 mm stroke is relatively short, always ensure the load is axially aligned to prevent side-load wear on the 25 mm rod bearing.
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-SC80X125S FAQ
The B04- prefix indicates that this is a construction-machinery dedicated variant of the standard AirTAC SC80X125S cylinder. It is mechanically identical to the base SC model, offering the same 80 mm bore, 125 mm stroke, 2513 N push force at 0.5 MPa, and built-in magnet, but is designated for heavy-equipment manufacturers.
No, the SC series is a double-acting air cylinder and cannot hold a load or position when air pressure is lost or the valve is centered. The adjustable cushion only decelerates the piston near the stroke end to soften impact. If your application requires holding a vertical load without live pressure, you must use an external rod brake, mechanical lock, or pilot-operated check valve.
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