Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X225
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X225 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, 225mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke225 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X225
The B04-SCD32X225 is an AirTAC construction-machinery dedicated double-rod pneumatic cylinder. The B04- prefix denotes a heavy-equipment industry designation, meaning it is mechanically identical to the standard SCD32X225. It features a 32 mm bore and a 225 mm stroke, driven by a 12 mm diameter rod that passes through both end caps.
Because the rod area is subtracted from both chambers, the unit generates identical thrust in both directions, yielding 345 N at 0.5 MPa and 621 N at the 0.9 MPa maximum operating pressure. Adjustable cushions at each end provide 21 mm of deceleration to protect the moving tooling on heavy machinery.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X225 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X225 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 225 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-SCD32X225
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×225 | 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-SCD32X225 Is Used
Excavator Linkage
Drives symmetric push/pull mechanisms on compact excavator auxiliary attachments where equal force both ways prevents linkage binding.
Shuttle Transfer
Moves parts between two stations on heavy-duty construction equipment assembly lines, using the rear rod for a stopper flag.
Dual-Tool Actuation
Carries a tool on each rod end to alternately press and release components in a compact machinery fabrication cell.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X225 the Right Cylinder?
This 32 mm bore provides 345 N of force each way at 0.5 MPa. If your construction equipment requires less thrust, stepping down is not an option below this size in the SCD series, but moving up to a 40 mm bore yields 528 N. If you only need tooling on one side and want full-bore push force, a single-rod SC cylinder is a lighter, more compact choice. For applications demanding high side-load resistance, a dedicated guided cylinder is superior to a through rod.
When ordering a replacement, match the 32 mm bore, 225 mm stroke, PT1/8 port thread, basic mounting style, and confirm whether a magnetic piston (-S) is required. At 225 mm stroke, the extended unsupported rod length increases the risk of bending under heavy lateral loads; use an external guide rail to support the workpiece.
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-SCD32X225 FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SCD32X225. It is mechanically identical to the standard model, offering the same 32 mm bore, 225 mm stroke, and double-rod configuration for heavy-equipment builders.
Yes, it equalizes it. Because the 12 mm rod protrudes from both ends, the effective area is identical in both directions. This cylinder outputs 483 N of push and pull force at 0.7 MPa, unlike a single-rod cylinder which has a weaker pull stroke.
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