Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X25S
The AirTAC Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X25S is a genuine double-acting standard air cylinder with a Ø100mm bore and 25mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ100 mm
- Stroke25 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-SC100X25S
The B04-SC100X25S is AirTAC's construction-machinery dedicated variant of the standard SC100X25S tie-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the base SC model, offering a 100mm bore and a compact 25mm stroke. As a double-acting actuator, it generates 3927 N of push force and 3681 N of pull force at 0.5 MPa.
This short-stroke unit features a built-in magnet (S suffix) for direct mounting of CMSG, DMSG, or EMSG sensors along the barrel. It uses a 25mm piston rod, PT1/2 port threads, and includes adjustable cushions measuring 29mm to soften end-of-stroke impacts. The body length A is 188mm, yielding a total extended length of 213mm.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X25S Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X25S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 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-SC100X25S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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-SC100X25S Is Used
Excavator Door Latches
Provides high push force to lock and secure heavy cab doors on earthmoving equipment.
Heavy-Duty Clamps
Delivers 3927 N at 0.5 MPa to hold thick steel plates during welding or drilling on site.
Brake Actuators
Short 25mm stroke actuates secondary braking or locking pins on mobile cranes and lifts.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X25S the Right Cylinder?
Select this 100mm bore when an application demands high thrust in a tight stroke envelope, stepping up from an 80mm cylinder (2513 N push at 0.5 MPa) to handle heavier construction loads. If 3927 N is excessive, dropping to an 80mm bore saves space. Because the 25mm stroke is very short, side-load bending on the 25mm rod is minimal, though external guides are always recommended if the load is off-center.
When replacing this unit, match the 100mm bore, 25mm stroke, PT1/2 port thread, basic mounting style, and the built-in magnet (-S). Note that the SC is a tie-rod cylinder and is shorter than an ISO 15552 unit, so it is not a drop-in dimensional substitute for ISO profiles.
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-SC100X25S FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated line. It is mechanically identical to the standard SC100X25S, offering the same 100mm bore, 25mm stroke, 3927 N push force at 0.5 MPa, and built-in magnet.
No, the SC series is double-acting but does not lock position or hold loads without live air pressure. If a load must be held during pressure loss, an external mechanical lock, rod brake, or pilot-operated check valve is required.
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