Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175 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, 175mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke175 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175
The B04-SCD32X175 is an AirTAC construction-machinery dedicated double-rod cylinder. The B04- prefix denotes a heavy-equipment industry variant that is mechanically identical to the standard SCD32X175. It features a 32 mm bore and 175 mm stroke, driven by a 12 mm diameter piston rod that passes through both end caps.
Because the rod area is subtracted from both chambers, this actuator generates identical thrust in both directions, yielding 483 N of force at 0.7 MPa and 621 N at 0.9 MPa. The cylinder body length A is 187 mm, and it incorporates adjustable cushions with a 21 mm length to decelerate the piston smoothly at stroke ends.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 175 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-SCD32X175
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×175 | 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-SCD32X175 Is Used
Excavator Panel Shift
Equal push and pull force is ideal for shifting control panels or covers on heavy equipment where symmetric loading prevents bearing uneven wear.
Shuttle Transfer
The through-rod design allows tooling mounted on the rear rod to act as a synchronized stopper or secondary actuator on compact construction machinery.
Non-Rotating Pusher
Dual rod guidance provides better resistance to twist than a single rod, useful for pushing components into alignment on an assembly jig.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175 the Right Cylinder?
This 32 mm bore provides 345 N each way at 0.5 MPa. If your application requires less force, stepping down is not an option within this size class, but moving up to a 40 mm bore yields 528 N at 0.5 MPa for heavier loads. Choose a single-rod SC cylinder if you only need unidirectional thrust and want a shorter overall footprint.
When replacing this unit, match the 32 mm bore, 175 mm stroke, PT1/8 port thread, basic mounting style, and non-magnet configuration exactly. For this 175 mm stroke, the unsupported rod length is moderate, but always ensure external guides support any significant side loads to prevent rod bending and premature seal 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-SCD32X175 FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant. It is mechanically identical to the standard SCD32X175, offering the same 32 mm bore, 175 mm stroke, and 483 N force at 0.7 MPa, with no changes to physical dimensions or seals.
No, the 21 mm adjustable cushion only decelerates the piston near the end of the stroke to prevent impact. It does not lock or hold the load. If the machine requires position holding without live air pressure, you must use an external mechanical lock or pilot-operated check valve.
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