Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X700
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X700 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, 700mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke700 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X700
The B04-SCD63X700 is an AirTAC construction-machinery dedicated double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the standard SCD63X700. It features a 63mm bore and a 700mm stroke, driven by a Ø20mm piston rod extending through both end caps.
Because the rod area is subtracted on both sides, thrust is perfectly symmetrical at 1402 N each way at 0.5 MPa, climbing to 2523 N at 0.9 MPa. The 700mm travel is well within the 1500mm maximum standard stroke for this bore. The body length A(SCD) is 210mm, and adjustable cushions provide 28mm of end-of-stroke deceleration.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X700 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X700 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 700 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-SCD63X700
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×700 | 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-SCD63X700 Is Used
Excavator Panel Shuttling
Drives symmetric transfer mechanisms on heavy equipment cabins, using the through-rod to push and pull equal loads without force mismatch.
Dual-Tool Actuation
Mounts a tool on one rod end and a stopper or sensor flag on the opposite end, keeping bearing loads balanced during 700mm linear transitions.
Non-Rotating Pushers
Provides better anti-rotation characteristics than a single-rod unit for pushing structural components in construction machinery assembly.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X700 the Right Cylinder?
Choose this 63mm bore when you need balanced 1402 N force in both directions over a 700mm span. If your application requires less thrust, stepping down to a 50mm bore yields 825 N each way at 0.5 MPa; for heavier loads, an 80mm bore provides 2268 N. A single-rod SC cylinder is preferable if rear tooling is unnecessary, while a guided cylinder is strongly recommended if the load demands high side-load resistance.
At 700mm of travel, the unsupported rod length increases bending susceptibility. Use an external guide rail to prevent rod deflection. For exact replacements, match the 63mm bore, 700mm stroke, PT1/4 port, basic mounting, and confirm if a -S magnet is needed. Note that air pressure does not hold the load when exhausted; a mechanical lock is required for dead-end positioning.
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-SCD63X700 FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant of the SCD63X700. It is mechanically identical to the standard model, offering the same 63mm bore, 700mm stroke, and 1402 N equal push/pull force at 0.5 MPa.
A double-rod cylinder provides identical push and pull forces (1402 N each way at 0.5 MPa here) and symmetric speed. The protruding rear rod allows mounting tooling on both ends and offers better rod guidance, though it is not a substitute for a guided cylinder under heavy side loads.
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