Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X225S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X225S 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, 225mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke225 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X225S
The B04-SCD63X225S is an AirTAC double-acting, double-rod cylinder where the B04- prefix designates it as a construction-machinery dedicated variant, mechanically identical to the standard SCD63X225S. The through-rod design yields identical push and pull thrust of 1402 N at 0.5 MPa, peaking at 2523 N at 0.9 MPa.
Because the Ø20 mm piston rod exits both end caps, the effective pressure area is balanced. This 225 mm stroke unit features adjustable cushions (28 mm length) and a built-in magnet for CMSG/DMSG sensors. The retracted body length A(SCD) is 210 mm.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X225S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X225S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 225 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-SCD63X225S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×225 | 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-SCD63X225S Is Used
Excavator Linkages
Drives balanced actuation arms on heavy equipment where the rear rod operates a secondary mechanical linkage.
Shuttle Transfer Tables
Pushes and pulls a workpiece carrier with identical 1402 N force, ensuring consistent timing in both directions.
Non-Rotating Pushers
Provides enhanced rod guidance for assembly tooling that requires resistance to torsional deflection.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X225S the Right Cylinder?
Select this 63 mm bore when an application requires equal force both directions and a rear rod for mounting secondary tooling or a stopper. If your machine needs less thrust, the 50 mm bore offers 825 N at 0.5 MPa; for heavier loads, the 80 mm bore provides 2268 N. A single-rod SC cylinder is preferable if rear-side tooling is unnecessary.
At 225 mm stroke, side loading can bend the unsupported rod; use an external guide rail. To replace this unit, match the 63 mm bore, 225 mm stroke, PT1/4 port, basic mounting, and the -S magnet option.
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-SCD63X225S FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SCD63X225S. It shares the exact same physical specs, 1402 N force, and dimensions as the base model.
The double-rod design provides equal push and pull force (1402 N at 0.5 MPa) and allows mounting tooling on the rear rod. Note that air pressure is required to hold a load; use a mechanical lock if the load must stay up when air is cut.
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