Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø12mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø32mm bore, 50mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke50 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50
The AirTAC B04-SCD32X50 is a double-acting, double-rod pneumatic cylinder engineered for construction machinery. The B04- prefix designates this as a construction-machinery dedicated variant of the standard SCD32X50, meaning it is mechanically identical in its core specifications. Because the piston rod passes through both end caps, the effective area is symmetrical, yielding an equal push and pull force of 483 N at 0.7 MPa.
With a 32 mm bore and 50 mm stroke, this compact unit features a 12 mm rod on both ends and a 21 mm adjustable cushion to decelerate the piston near stroke ends. The body length A(SCD) is 187 mm. It is a genuine AirTAC component built to withstand the demanding cycles of heavy equipment.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 50 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 1000 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø32mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 346 N | 346 N |
| 0.7 MPa | 484 N | 484 N |
| Max (@1.0 MPa) | 70 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50 Is Used
Excavator Panel Pusher
Uses the equal bidirectional force to extend and retract heavy cab access panels smoothly on earthmoving equipment.
Shuttle Transfer Arm
Mounts tooling on both rod ends to alternately push materials between two workstations without reversing the tool orientation.
Anti-Rotation Stopper
Leverages the dual-rod guidance to resist twisting during lateral loading cycles on heavy machinery indexing tables.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50 the Right Cylinder?
Choose this 32 mm bore when your application requires 483 N of symmetrical thrust at 0.7 MPa within a tight footprint. If your mechanism needs less force, stepping down is not an option in this series, but stepping up to a 40 mm bore provides 739 N. If you do not require rear-rod tooling or equal bi-directional force, a single-rod AirTAC SC cylinder is lighter and more economical. For applications with significant side loads, a dedicated guided cylinder is superior to relying solely on the through-rod for support.
To replace this unit, match the 32 mm bore, 50 mm stroke, PT1/8 port thread, basic mounting style, and ensure no internal magnet is required. Note that the adjustable air cushion only decelerates the piston; it does not lock or hold the load. If the mechanism must maintain position without live air pressure, an external mechanical lock or pilot-operated check valve is mandatory.
Double-rod checklist
- ✓ Need equal force / speed both directions?
- ✓ Rear rod for tooling, stopper or sensor flag?
- ✓ Better rod guidance / anti-rotation?
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Keep BOTH rod ends clear of side load and interference.
- check Adjust end cushion screws for smooth stops.
- check Use SCD mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X50 FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant of the SCD32X50. It is mechanically identical to the standard model, offering the same 32 mm bore, 50 mm stroke, and 483 N equal push/pull force at 0.7 MPa.
A double-rod cylinder provides identical push and pull forces because the rod area is subtracted from both chambers. It also allows mounting tooling or a sensor flag on the rear rod and offers better anti-rotation resistance than a single-rod cylinder.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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