Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X900
The AirTAC B04-SC Construction Machinery Special Standard Cylinder B04-SC40X900 is a genuine double-acting standard air cylinder with a Ø40mm bore and 900mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ40 mm
- Stroke900 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 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-SC40X900
The B04-SC40X900 is AirTAC's construction-machinery dedicated variant of the standard SC40X900 tie-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the base SC40X900, offering double-acting air operation with a 40mm bore and 900mm stroke.
Delivering 879N of push force at 0.7MPa (1130N at 0.9MPa), this unit features a 16mm piston rod, PT1/4 ports, and 21mm adjustable cushions. With a body length A of 142mm, the total extended length reaches 1042mm. It uses standard TPU seals for a -20 to +70C operating range.
Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X900 Technical Specifications
| Model | Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X900 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 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-SC40X900
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×900 | 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-SC40X900 Is Used
Excavator Door Actuation
Drives long-travel opening and closing motions for heavy equipment cab doors, utilizing the full 900mm stroke to clear operator access zones.
Material Handling Ejection
Pushes debris or processed materials from construction machinery hoppers with 879N of force at 0.7MPa operating pressure.
Equipment Cover Lifting
Raises and lowers protective service covers on heavy machinery, providing reliable double-acting linear motion in demanding environments.
Is the Airtac B04-SC Construction Machinery Special Standard Cylinder B04-SC40X900 the Right Cylinder?
This 40mm bore provides 628N push force at 0.5MPa. If your construction machinery requires more clamping or lifting power, stepping up to the 63mm bore yields 1559N at 0.5MPa. For lighter duties, the 32mm bore offers 402N. When replacing this cylinder, match the 40mm bore, 900mm stroke, PT1/4 thread, basic mounting, and non-magnet configuration exactly.
At 900mm of stroke, the 16mm rod is highly susceptible to bending under side loads. For heavy-equipment applications involving off-center loads, integrate an external guide rail or specify a guided cylinder to prevent rod-bearing damage and premature seal failure.
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-SC40X900 FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant of the SC40X900 cylinder. It is mechanically identical to the standard SC40X900, offering the same 40mm bore, 900mm stroke, and 1130N thrust at 0.9MPa.
No, this is a double-acting air cylinder and cannot hold position without live pressure. The adjustable cushion only decelerates the piston at stroke end. To hold a vertical load safely, you must use an external mechanical lock or a pilot-operated check valve.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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