Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X600S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X600S 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, 600mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke600 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X600S
The B04-SCD63X600S is an AirTAC double-acting, double-rod cylinder where the B04- prefix designates it as a construction-machinery dedicated variant; mechanically, it is identical to the standard SCD63X600S. Because the Ø20 mm piston rod passes through both end caps, the effective area is identical in both chambers, yielding an equal push and pull thrust of 1402 N at 0.5 MPa (and 2523 N at 0.9 MPa). This symmetric force is highly valued on heavy equipment where reversing loads must be moved predictably.
With a 600 mm stroke, this unit provides extended travel for shuttling or gating tasks on machinery. The barrel incorporates a built-in magnet (the -S suffix) so CMSG, DMSG, or EMSG sensors can clamp directly onto it for end-of-stroke signaling. It features adjustable cushions with a 28 mm stroke length to decelerate the piston smoothly, and its retracted body length is based on the SCD standard A dimension of 210 mm, which is longer than a single-rod SC equivalent.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X600S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X600S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 600 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-SCD63X600S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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-SCD63X600S Is Used
Excavator Boom Control
Drives secondary auxiliary links or covers on construction machinery where the B04 prefix indicates dedicated heavy-equipment suitability and equal bidirectional force is required.
Material Shuttle Table
Moves aggregates or parts across a 600 mm stroke on a transfer carriage, using the through-rod design to mount matching tooling on the opposite end.
Non-Rotating Pusher
Pushes workpieces from both sides simultaneously, leveraging the dual-rod configuration for better anti-rotation resistance than a standard single-rod actuator.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X600S the Right Cylinder?
Choose this 63 mm bore when an application demands exactly 1402 N of force in both directions at 0.5 MPa. If your machine requires less thrust, stepping down to the 50 mm bore yields 825 N each way, whereas moving up to the 80 mm bore provides 2268 N. A single-rod SC cylinder is preferable if you only need unidirectional work and want a shorter overall envelope, but a true guided cylinder should be selected if the mechanism experiences heavy side loads.
For a 600 mm stroke, the unsupported rod length is substantial; always use an external guide rail to prevent rod bending and premature bearing wear. To replace this unit exactly, match the 63 mm bore, 600 mm stroke, PT1/4 port thread, basic mounting, and the -S magnet option. Note that the adjustable air cushion only decelerates the piston near stroke end—it does not lock or hold the load. If the load must remain stationary without live air pressure, fit a mechanical lock or external rod brake.
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-SCD63X600S FAQ
The B04- prefix indicates that this cylinder is part of AirTAC's construction-machinery dedicated line. It is mechanically identical to the standard SCD63X600S, offering the same 63 mm bore, 600 mm stroke, and double-rod configuration, but is designated for heavy-equipment builders.
The double-rod design provides equal push and pull force (1402 N at 0.5 MPa in both directions) because the rod area is subtracted from both chambers. It also offers better rod guidance, improved anti-rotation characteristics, and allows tooling or a sensor flag to be mounted on the rear rod.
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