Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X250STCY
The AirTAC Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X250STCY is a genuine double-acting standard air cylinder with a Ø100mm bore and 250mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ100 mm
- Stroke250 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-SC100X250STCY
The B04-SC100X250STCY is AirTAC's construction-machinery dedicated variant of the SC100X250STCY pneumatic cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the standard SC series: a double-acting tie-rod cylinder delivering 3927 N of push force at 0.5 MPa (7068 N at 0.9 MPa).
This 100 mm bore, 250 mm stroke unit features a built-in magnet for position sensing and a TC centre-trunnion mount for pivoting loads. It uses a 25 mm piston rod, PT1/2 ports, and 29 mm adjustable cushions to absorb end-of-stroke impact. Total extended length is approximately 438 mm.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X250STCY Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X250STCY |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 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-SC100X250STCY
| SC | Standard tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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-SC100X250STCY Is Used
Excavator Accessory Actuation
Drives secondary pivoting arms or cover plates on heavy equipment, utilizing the TC trunnion mount to articulate smoothly under high dynamic loads.
Concrete Dispenser Gates
Provides robust 7068 N thrust at 0.9 MPa to open and close heavy abrasive material gates on batching plants and pavers.
Vibratory Screen Tensioning
Adjusts screening media tension on mobile crushing equipment, using the built-in magnet to confirm extension and retraction to the control system.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC100X250STCY the Right Cylinder?
This 100 mm bore provides 3927 N push force at 0.5 MPa. If your application requires less force, stepping down to an 80 mm bore yields 2513 N; for heavier loads, a 125 mm bore provides 6136 N. At 250 mm stroke, the unsupported 25 mm rod is susceptible to bending under side loads.
For pivoting mechanisms common in construction machinery, the TC centre-trunnion mount (supplied with the TCM1 bracket, part code F-SC100TC) is ideal. When replacing this cylinder, match the 100 mm bore, 250 mm stroke, PT1/2 port thread, TC mounting, and the -S magnet 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-SC100X250STCY FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SC100X250STCY. It is mechanically identical to the standard SC cylinder, offering the same 100 mm bore, 250 mm stroke, 7068 N thrust at 0.9 MPa, and TC trunnion mounting.
No, the SC series is double-acting and does not lock or hold position without live air pressure. The adjustable cushions only decelerate the piston at stroke ends. For vertical loads that must be held during pressure loss, an external mechanical lock or pilot-operated check valve is required.
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