Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X500
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X500 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø63mm bore, 500mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke500 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X500
The B04-SCD63X500 is an AirTAC construction-machinery dedicated double-rod cylinder. The B04- prefix marks it as a heavy-equipment builder variant, mechanically identical to the standard SCD63X500. It features a 63 mm bore and 500 mm stroke, delivering an equal push and pull force of 1402 N at 0.5 MPa (1962 N at 0.7 MPa) because the Ø20 mm piston rod extends through both end caps.
This symmetric design provides superior anti-rotation characteristics and allows tooling to be mounted on either end. The cylinder body length A(SCD) is 210 mm, and it includes adjustable cushions with a 28 mm length to decelerate the piston smoothly at stroke ends. It is a double-acting tie-rod cylinder, not an ISO 15552 unit.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X500 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X500 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 500 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 28 mm |
| Max stroke | Up to 1500 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 (Ø63mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 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-SCD63X500
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×500 | 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-SCD63X500 Is Used
Excavator Linkages
Drives auxiliary mechanisms on construction equipment where equal force is needed to push and pull heavy linkage components.
Shuttle Transfer Tables
Moves parts back and forth on a conveyor with identical speed and force in both directions using dual-end tooling.
Non-Rotating Pushers
Utilizes the through-rod design for better guidance and anti-rotation when pushing materials in harsh environments.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X500 the Right Cylinder?
Choose this 63 mm bore when you need exactly 1402 N of thrust both ways at 0.5 MPa. If your application requires less force, stepping down to a 50 mm bore yields 825 N each way, while an 80 mm bore provides 2268 N for heavier loads. A single-rod SC cylinder is preferable if you only need one-sided actuation and want a shorter overall length.
For a direct replacement, match the 63 mm bore, 500 mm stroke, PT1/4 port thread, basic mounting, and lack of a magnet. Because this model has a 500 mm stroke, the unsupported rod length is significant; use an external guide rail or a proper guided cylinder to prevent rod bending under heavy side 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-SCD63X500 FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SCD63X500. It is mechanically identical to the base model, offering the same 63 mm bore, 500 mm stroke, and double-rod configuration.
A double-rod cylinder provides equal push and pull forces (1402 N each way at 0.5 MPa for this bore) and better rod guidance. The rear rod allows for dual tooling or sensor flags, but note that air pressure is required to hold position; a mechanical lock is needed if the load must stay up when air is lost.
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