Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X75
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X75 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, 75mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke75 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X75
The B04-SCD32X75 is AirTAC's construction-machinery dedicated variant of the SCD32X75 double-acting, double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the standard SCD32X75. A Ø12 mm piston rod passes through both end caps, yielding perfectly symmetric thrust of 345 N in both directions at 0.5 MPa.
Because the rod protrudes from both ends, you can mount tooling or a stopper on the rear side while gaining superior anti-rotation characteristics compared to a single-rod unit. This 75 mm stroke model features adjustable cushions (21 mm) to decelerate the piston smoothly at stroke ends, and its retracted body length follows the SCD-specific A dimension of 187 mm.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X75 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X75 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 75 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-SCD32X75
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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-SCD32X75 Is Used
Excavator Control Linkages
Provides equal push and pull force for small pilot valve actuation or linkage positioning on heavy equipment, where the through-rod prevents rotational play.
Shuttle Transfer Stops
Uses the rear rod extension as a mechanical stopper or sensor flag to synchronize material shuttling on construction machinery assembly lines.
Two-Sided Tooling Actuation
Drives dual tooling or clamps simultaneously from a single cylinder body, saving space and ensuring symmetric bearing loads in tight equipment bays.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X75 the Right Cylinder?
This 32 mm bore fits compact actuation tasks on heavy machinery where 345 N (0.5 MPa) of equal bidirectional force is sufficient. If your application requires less thrust, step down to a smaller bore; if you need substantially more power, consider the 40 mm bore which provides 528 N at 0.5 MPa. For jobs needing only one-sided pushing, the standard AirTAC SC single-rod cylinder is a lighter, more economical choice.
When replacing this unit, ensure the new cylinder matches five critical parameters: the 32 mm bore, 75 mm stroke, PT1/8 port thread, basic mounting style, and no magnet. Note that the adjustable air cushion only decelerates the piston near end-of-stroke; it does not lock or hold the load. If your construction mechanism must maintain position without live air pressure, you must integrate an external mechanical lock or pilot-operated check valve.
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-SCD32X75 FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant of the SCD32X75. It is mechanically identical to the standard SCD32X75 double-rod cylinder, offering the same 345 N equal push/pull force at 0.5 MPa and PT1/8 port.
A double-rod cylinder provides identical force and speed in both directions because the rod area is subtracted from both chambers. The through-rod offers better anti-rotation guidance and allows rear-side tooling mounting, which a single-rod SC cylinder cannot do.
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