Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350 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, 350mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke350 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350
The B04-SCD32X350 is AirTAC's construction-machinery dedicated variant of the standard SCD32X350 double-rod cylinder. The B04- prefix simply designates its heavy-equipment industry application; mechanically, it shares the exact same physical specs as the base model. It features a 32 mm bore and a 350 mm stroke.
Because the piston rod passes through both end caps, the effective area is identical in both chambers. This yields an equal push and pull force of 345 N at 0.5 MPa, rising to 621 N at 0.9 MPa. The Ø12 mm rod protrudes from both ends, supported by adjustable cushions that provide 21 mm of deceleration at stroke ends.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 350 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-SCD32X350
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×350 | 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-SCD32X350 Is Used
Excavator Panel Shuttling
Drives two-sided actuation for moving control panels or covers on heavy equipment, utilizing the equal push and pull force for stable motion.
Symmetric Component Transfer
Transfers parts between two stations on a construction machinery assembly line, using the rear rod as a non-rotating mounting point for tooling.
Dual-Tool Actuation
Carries a tool on each rod end to alternately push and pull components, doubling cycle efficiency without requiring a second actuator.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350 the Right Cylinder?
This 32 mm bore provides 345 N of thrust each way at 0.5 MPa. If your construction machine needs less force, step down to a 25 mm bore; if you need more clamping or lifting power, step up to a 40 mm bore which provides 528 N. Choose a single-rod SC cylinder if you only need one-sided actuation and want to save space.
With a 350 mm stroke, the unsupported rod length increases the risk of side-load bending. Use an external guide rail to prevent rod deflection under heavy loads. To replace this unit, match the 32 mm bore, 350 mm stroke, PT1/8 port thread, basic mounting, and no magnet. Note that air pressure does not hold the load if supply is lost; add a mechanical lock for suspended loads.
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-SCD32X350 FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant. It is mechanically identical to the standard SCD32X350, offering the same 32 mm bore, 350 mm stroke, and 345 N equal push/pull force at 0.5 MPa.
A double-rod cylinder provides equal push and pull forces because the rod area is subtracted from both sides. It also offers better rod guidance, resistance to rotation, and a rear rod for mounting secondary tooling or sensors.
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