Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125
The AirTAC Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125 is a genuine double-acting standard air cylinder with a Ø100mm bore and 125mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ100 mm
- Stroke125 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125
The B04-SC100X125 is AirTAC's construction-machinery dedicated variant of the standard SC100X125 cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the base SC100X125 double-acting tie-rod actuator. It uses a 25mm piston rod, a PT1/2 port, and delivers 3927 N of push force at 0.5 MPa.
With a 125mm stroke and a 188mm body length A, this model provides a total extended length of 313mm. It features 29mm adjustable cushions to decelerate the piston at stroke ends, handling up to 7068 N of thrust at a 0.9 MPa operating pressure. The standard TPU seals operate reliably between -20 and +70 C.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125 Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| 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, 29 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (approx.) | 801 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-SC100X125
| SC | Standard tie-rod cylinder series. |
|---|---|
| 100 | 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-SC100X125 Is Used
Excavator Door Control
Actuates heavy cab doors and access panels on earthmoving equipment, utilizing the 3927 N push force to handle substantial door weight.
Concrete Pump Hopper
Drives diverter gates and discharge valves in concrete pumping machinery where robust tie-rod construction survives harsh jobsite vibrations.
Heavy Equipment Latches
Secures and releases heavy-duty locking mechanisms on cranes and loaders, relying on 7068 N thrust at 0.9 MPa for positive engagement.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125 the Right Cylinder?
This 100mm bore provides 3927 N push force at 0.5 MPa. If your construction machinery requires less force, stepping down to an 80mm bore yields 2513 N. For heavier loads, a 125mm bore provides 6136 N. Because this is a 125mm stroke, side-load risks are moderate, but always ensure proper rod alignment to prevent premature bearing wear.
To replace this cylinder, match the 100mm bore, 125mm stroke, PT1/2 port thread, basic mounting style, and non-magnet configuration. As a tie-rod cylinder, it is shorter than an ISO 15552 unit and is not dimensionally interchangeable with that profile.
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-SC100X125 FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant of the SC100X125. It is mechanically identical to the standard SC100X125, offering the same 3927 N push force at 0.5 MPa, 25mm rod, and PT1/2 port, but is designated for heavy-equipment manufacturers.
No. The 29mm adjustable cushion only decelerates the piston at the end of the stroke to soften impact. It does not lock or hold the load. If your construction machinery needs to hold a position without air pressure, you must use an external mechanical lock or a pilot-operated check valve.
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