Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175S 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-SCD32X175S
The B04-SCD32X175S is an AirTAC double-acting, double-rod cylinder where the B04- prefix designates it as a construction-machinery dedicated variant of the standard SCD32X175S. Mechanically identical to the base model, it features a 32 mm bore and a 175 mm stroke. Because the Ø12 mm piston rod passes through both end caps, the effective area is balanced, yielding an equal push and pull force of 483 N at 0.7 MPa. The extended body length A(SCD) is 187 mm.
This through-rod design provides superior rod guidance and anti-rotation characteristics compared to a single-rod cylinder, which is critical for rugged heavy-equipment applications. The built-in magnet (indicated by the S suffix) allows CMSG, DMSG, or EMSG sensors to be clamped directly onto the cylinder barrel for precise end-of-stroke position detection. Adjustable cushions at both ends provide 21 mm of deceleration to protect the piston from impact at the stroke limits.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175S |
|---|---|
| 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-SCD32X175S
| 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-SCD32X175S Is Used
Excavator Panel Pusher
Uses the equal push and pull force to actuate heavy cab panels on construction machinery, with the rear rod end serving as a stable mounting point for linkages.
Shuttle Transfer Mechanism
Transfers parts between two stations symmetrically, leveraging the anti-rotation properties of the double rod to keep the payload level without twisting.
Dual-Tool Actuation
Mounts a primary tool on the front rod and a secondary stopper or sensor flag on the rear rod, allowing one cylinder to perform two synchronized tasks.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X175S the Right Cylinder?
Choose this 32 mm bore when your application requires 483 N of symmetric force at 0.7 MPa. If your mechanism requires less thrust, stepping down is not an option in this SCD range (32 mm is the smallest bore), but if you need significantly more power, the 40 mm bore offers 739 N at the same pressure. If you do not need rear-side tooling or anti-rotation benefits, a standard single-rod AirTAC SC cylinder will save space and weight. For heavy side loads, do not rely on the through-rod alone; a dedicated guided cylinder is required.
To replace this unit, match five points: 32 mm bore, 175 mm stroke, PT1/8 port thread, basic mounting (no bracket), and the built-in magnet (-S). For the 175 mm stroke, ensure external guides support the rod to prevent bending under load, as the unsupported length increases at full extension.
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-SCD32X175S FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant. It is mechanically identical to the standard SCD32X175S, offering the same 32 mm bore, 175 mm stroke, and 483 N equal push/pull force at 0.7 MPa.
No. The 21 mm adjustable cushion only decelerates the piston near the end of the stroke to prevent impact damage. It does not lock or hold the load. If your construction application must hold position without live air pressure, you need an external mechanical lock or pilot-operated check valve.
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