Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X200
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X200 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, 200mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke200 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X200
The B04-SCD63X200 is an AirTAC double-acting, double-rod pneumatic cylinder built for construction machinery. The B04- prefix designates it as a construction-machinery dedicated variant of the standard SCD63X200, meaning it is mechanically identical to the base model. Because the piston rod passes through both end caps, the effective area is identical in both directions, yielding an equal push and pull force of 1402 N at 0.5 MPa. The through-rod design also provides superior anti-rotation characteristics and allows tooling to be mounted on both ends.
This 63 mm bore cylinder features a 200 mm stroke and a robust Ø20 mm rod protruding from both sides. It incorporates adjustable cushions with a 28 mm length to smoothly decelerate the piston at stroke ends. Operating at speeds of 30-800 mm/s, the unit generates 2523 N of thrust at 0.9 MPa. The body length A(SCD) is 210 mm, which is slightly longer than a comparable single-rod cylinder to accommodate the dual rod sealing.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X200 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X200 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 200 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-SCD63X200
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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-SCD63X200 Is Used
Excavator Control Linkages
Provides equal push and pull force for synchronized shifting of heavy mechanical linkages in construction equipment pilot circuits.
Dual-Tool Shuttle Mechanisms
Mounts a tool on each rod end to alternate between two operations on a heavy-equipment assembly jig without rotating the payload.
Crane Brake Actuators
Drives symmetric tensioning arms where consistent bi-directional force and anti-rotation stability are critical for safe load handling.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X200 the Right Cylinder?
Choose this 63 mm bore double-rod cylinder when your application demands identical force in both directions along with enhanced guidance. If your machine requires less force, stepping down to a 50 mm bore yields 825 N at 0.5 MPa. Conversely, if you need higher thrust, an 80 mm bore provides 2268 N at 0.5 MPa. If you only need unidirectional thrust and do not require a rear rod for tooling or sensing, a standard single-rod AirTAC SC cylinder will save space and cost. Similarly, if the mechanism experiences heavy side loads, a dedicated guided cylinder is recommended over relying solely on the through-rod for support.
When replacing this unit, ensure the new cylinder matches five key parameters: the 63 mm bore, 200 mm stroke, PT1/4 port thread, basic mounting style, and absence of a magnet. For stroke lengths of 300 mm or more on this bore, the unsupported rod length increases the risk of rod bending under side load; always use an external guide rail to support the load.
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-SCD63X200 FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the standard AirTAC SCD63X200. It is mechanically identical to the base model, featuring the same 63 mm bore, 200 mm stroke, and physical specifications, but is designated for heavy-equipment builders.
A double-rod cylinder provides identical push and pull forces because the rod area is subtracted from both chambers. For this model, that means 1402 N of force in both directions at 0.5 MPa. It also offers better rod guidance, anti-rotation resistance, and a rear rod for mounting secondary tooling or sensors.
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