Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125S
The AirTAC Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125S 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-SC100X125S
The B04-SC100X125S is an AirTAC double-acting tie-rod cylinder engineered for construction machinery. The B04- prefix designates it as the construction-machinery dedicated variant of the standard SC100X125S, meaning it shares the exact same physical specs, bore, and stroke while being targeted at heavy-equipment builders.
Delivering a robust 3927 N of push force at 0.5 MPa (and 5497 N at 0.7 MPa), this 100 mm bore unit is built for heavy lifting. The 125 mm stroke is driven by a 25 mm piston rod, and the barrel incorporates a built-in magnetic ring (S suffix) so CMSG or DMSG sensors can track piston position. Adjustable end cushions measure 29 mm to absorb impact.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125S Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125S |
|---|---|
| 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-SC100X125S
| 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-SC100X125S Is Used
Excavator Actuation
Drives auxiliary covers or heavy flap mechanisms on earthmoving equipment where high thrust and rugged tie-rod construction are required.
Concrete Dispenser
Operates heavy diverter gates on concrete mixing trucks, relying on 3927 N of push force to move dense material flows reliably.
Heavy Equipment Latching
Engages and secures heavy mechanical latches on mobile cranes or pavers, using the magnetic piston for closed-loop position confirmation.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X125S the Right Cylinder?
This 100 mm bore provides substantial thrust; if you need less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. For higher force requirements, a 125 mm bore offers 6136 N at the same pressure. Because the 125 mm stroke is relatively short for this bore, side-load stress on the 25 mm rod is minimal.
When replacing this unit, match the 100 mm bore, 125 mm stroke, PT1/2 port thread, and the built-in magnet. The SC is a tie-rod design that is shorter than an ISO 15552 cylinder 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-SC100X125S FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant of the SC100X125S cylinder. It is mechanically identical to the standard SC model, offering the same 100 mm bore, 125 mm stroke, and 3927 N push force at 0.5 MPa, but is designated for heavy-equipment applications.
No, the SC series is a double-acting air cylinder and cannot hold position without live air pressure. The adjustable 29 mm cushions only decelerate the piston at stroke ends to reduce impact; a mechanical lock or external brake is required to hold loads safely.
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