Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350S 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-SCD32X350S
The B04-SCD32X350S is an AirTAC double-acting, double-rod cylinder engineered for construction machinery. The B04- prefix denotes the construction-machinery dedicated variant of the SCD32X350S, meaning it is mechanically identical to the standard model. A 32 mm bore and 350 mm stroke deliver 483 N of equal push and pull force at 0.7 MPa, while the 12 mm through-rod extends from both end caps to support dual tooling or external stops.
Because the rod area is subtracted on both sides, thrust remains symmetrical in both directions at 621 N when operating at the 0.9 MPa maximum. The code includes an S suffix, equipping the cylinder with a built-in magnet so CMSG, DMSG, or EMSG sensors can clamp directly onto the 187 mm body to track piston position. Adjustable cushions at both ends provide 21 mm of deceleration to protect the moving assemblies.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350S |
|---|---|
| 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-SCD32X350S
| 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-SCD32X350S Is Used
Excavator Panel Shuttling
Drives two-sided actuation for moving control panels or covers on heavy equipment, utilizing the symmetrical push and pull force to reliably transfer loads in confined spaces.
Non-Rotating Pusher
The dual-rod design provides better anti-rotation resistance than a single rod, making it suitable for pushing mechanical linkages or components that must remain perfectly aligned.
Rear Stroke Sensing
The built-in magnet allows position sensors to be mounted along the barrel, while the rear rod extension can simultaneously actuate a secondary mechanical limit switch.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X350S the Right Cylinder?
Choose this 32 mm bore when an application requires 483 N of symmetrical force at 0.7 MPa. If your machine needs less thrust, stepping down is not an option in this bore range, but stepping up to a 40 mm bore increases output to 739 N. If you only need force in one direction and want a shorter body, a single-rod SC cylinder is more compact. For heavy side loads on the 350 mm stroke, a guided cylinder is recommended over relying on the through-rod.
To replace this unit, match the 32 mm bore, 350 mm stroke, PT1/8 port thread, basic mounting, and the built-in magnet. Note that the 350 mm stroke is within the 1000 mm standard limit for this bore. On strokes of 300 mm or more, the long unsupported rod is susceptible to bending under side loads; always use an external guide rail to prevent rod damage and premature bearing wear.
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-SCD32X350S FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant of the SCD32X350S. It is mechanically identical to the standard cylinder, offering the same 32 mm bore, 350 mm stroke, and 483 N equal push/pull force at 0.7 MPa.
A double-rod cylinder provides identical force in both directions because the 12 mm rod area is subtracted from both chambers. It also offers better rod guidance, higher resistance to rotation, and a rear rod extension for mounting secondary tooling or sensor flags.
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